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15 mhz rail-to-rail operational amplifiers op162/op262/op462 rev. f in fo rmation furn ished by an alog d e v i c e s is believed to be accurate and reliable. how e ver, n o resp on sibili ty is assume d b y a n alog de vices fo r its use, nor for an y i n fri n geme nt s of p a t e nt s or ot h e r ri ght s o f th ird parties th at may result fro m its use . s p ecificatio n s subj ec t to ch an g e witho u t n o tice. no licen s e is g r an te d by implicati o n or ot herwi s e u n der a n y p a t e nt or p a t e nt ri ghts of analog de v i ces. trademarks an d registered tra d ema r ks are the prop erty o f their respective ow ners. one technolog y way, p.o . box 9106, norwood, ma 02062-9106, u.s.a. t e l: 781. 329. 4 700 www.analog.com fax: 781. 326. 87 03 ? 2005 analog de vices, i n c. al l r i ght s r e ser v ed . features wide bandwi dt h: 15 mhz low offset voltage: 325 v ma x low noise: 9.5 nv/ hz @ 1 k hz single-supply operation: 2.7 v to 12 v rail-to-rail out p ut swing low tcv os : 1 v /c typ high slew rate: 13 v/s no phase inver sion unity-gain st a b le applic ati o ns portable instrumentation sampling adc amplifier wireless lans direct access arrangement office automat i on general description the o p 162 (sing l e), o p 262 (d u a l), a nd o p 462 (q uad) ra il -t o- ra i l 15 mh z am plif iers fe a t ur e t h e ext r a s p e e d ne w des i g n s r e q u ir e , wi t h t h e b e n e f i ts o f p r e c isio n a nd lo w p o w e r o p era t ion. w i t h t h eir in cr edib l y lo w o f fs et v o l t a g e o f 45 v (typ ic al) a nd l o w n o ise , t h ey a r e pe rf ectl y s u i t ed f o r p r eci s i o n f i l t e r a p p l ica - tio n s an d in s t r u m e n t a t io n. th e lo w s u p p l y c u r r en t o f 500 a (typ ical) is cr i t ical f o r p o r t a b le o r den s e l y p a c k ed desig n s. i n ad di tio n , t h e ra i l -t o-ra il o u t p u t swin g p r o v id es gr ea t e r d y n a mic r a n g e a nd co n t rol t h a n st anda rd v i de o am plif ie rs. th e s e p r o d uc ts o p era t e f r o m si n g le s u p p l i es as lo w as 2.7 v t o d u al s u p p lies o f 6 v . th e fast s e t t l i n g t i m e s and wide ou t p u t s w i n g s r e c o mme nd t h e m for b u f f ers t o s a m p l i ng a / d con ver ters. the o u t p u t dr i v e o f 30 ma (sin k an d s o ur c e ) is n e e d e d fo r m a n y au d i o a n d d i s p l a y ap p l i c at i o n s ; m o r e o u t p u t c u r r e n t c a n b e su p p lie d fo r limi t e d d u ra t i o n s. t h e opx62 fami ly is sp e c if ie d o v er t h e ext e n d e d i n d u s t r i al t e m p era t ur e ra n g e (C40c t o +125c). th e sin g le o p 162 a m p l if iers a r e a v a i l a b l e in 8-lead so i c , mso p , a nd tsso p p a c k a g es. th e d u al o p 262 a m p l if iers a r e a v a i la b l e in 8-le ad so i c and tsso p p a ckag es. the q u ad o p 462 a m p l if iers a r e a v a i la b l e in 14-lead , na r r o w -bo d y so i c a nd t ssop p a cka g es. pin c o nfig uratio ns null 1 ?in a 2 +in a 3 v? 4 null 8 v+ 7 out a 6 nc 5 nc = no connect op162 top view (not to scale) 00288-001 f i gure 1. 8-l e ad n a rro w - b o dy soic (s suffix) top view (not to scale) 1 2 3 4 op162 ? in a +in a v? null 8 7 6 5 v+ out a nc null nc = no connect 00288-002 f i g u re 2. 8-l e ad t s sop (ru suf f i x ) 8-l e ad m s op (rm suffix) out a 1 ?in a 2 +in a 3 v? 4 v+ 8 out b 7 ?in b 6 +in b 5 op262 top view (not to scale) 00288- 003 f i gure 3. 8-l e ad n a rro w - b o dy soic (s suffix) top view (not to scale) 1 2 3 4 op262 ?in a +in a v? out a 8 7 6 5 out b ? in b +in b v+ 00288-004 f i g u re 4. 8-l e ad t s sop (ru suf f i x ) out a 1 ?in a 2 +in a 3 v+ 4 out d 14 ?in d 13 +in d 12 v? 11 +in b 5 +in c 10 ?in b 6 ?in c 9 out b 7 out c 8 op462 top view (not to scale) 00288- 005 f i g u re 5. 14-l e ad n a r r o w - b ody soic ( s suf f i x ) 1 2 3 4 5 6 7 op462 ?in a +in a v+ o ut b ?in b +in b out a 14 13 12 11 10 9 8 ?in d +in d v? out c ?in c +in c out d top view (not to scale) 00288- 006 f i g u re 6. 14-l e ad t ssop (ru suf f i x )
op162/op262/op462 rev. f | page 2 of 20 table of contents specifications ...........................................................................................3 absolute maximum ratings .................................................................6 esd caution .................................................................................. 6 typical performance characteristics ..................................................7 applications ...........................................................................................12 functional description .............................................................. 12 offset adjustment ...................................................................... 12 rail-to-rail output .................................................................... 12 output short-circuit protection .............................................. 12 input overvoltage protection ................................................... 13 output phase reversal ............................................................... 13 power dissipation ....................................................................... 13 unused amplifiers ..................................................................... 14 power-on settling time ............................................................ 14 capacitive load drive ............................................................... 14 total harmonic distortion and crosstalk .............................. 15 pcb layout considerations ...................................................... 15 application circuits ............................................................................ 16 single-supply stereo headphone driver ................................. 16 instrumentation amplifier ........................................................ 16 direct access arrangement ...................................................... 17 spice macro-model .................................................................... 18 outline dimensions ............................................................................ 19 ordering guide .......................................................................... 20 revision history 1/05rev. e to rev. f changes to absolute maximum ratings table 4 and table 5 .... 6 change to figure 36 ....................................................................... 13 changes to ordering guide .......................................................... 20 12/04rev. d to rev. e updated format..................................................................universal changes to general description .................................................... 1 changes to specifications ................................................................ 3 changes to package type................................................................. 6 change to figure 16 ......................................................................... 8 change to figure 22 ......................................................................... 9 change to figure 36 ....................................................................... 13 change to figure 37 ....................................................................... 14 changes to ordering guide .......................................................... 20 10/02rev. c to rev. d deleted 8-lead plastic dip (n-8) ....................................universal deleted 14-lead plastic dip (n-14) ................................universal edits to ordering guide........................................................ 19 edits to figure 30............................................................................ 19 edits to figure 31............................................................................ 19 updated outline dimensions ....................................................... 19
op162/op262/op462 rev. f | page 3 of 20 specifications @ v s = 5.0 v, v cm = 0 v, t a = 25c, unless otherwise noted. table 1. electrical characteristics parameter symbol conditions min typ max unit input characteristics offset voltage v os op162g, op262g, op462g 45 325 v C40c t a +125c 800 v h grade, C40c t a +125c 1 mv d grade 0.8 3 mv C40c t a +125c 5 mv input bias current i b 360 600 na C40c t a +125c 650 na input offset current i os 2.5 25 na C40c t a +125c 40 na input voltage range v cm 0 4 v common-mode rejection cmrr 0 v v cm 4.0 v, C40c t a +125c 70 110 db large signal voltage gain a vo r l = 2 k?, 0.5 v out 4.5 v 30 v/mv r l = 10 k?, 0.5 v out 4.5 v 65 88 v/mv r l = 10 k?, C40c t a +125c 40 v/mv long-term offset voltage 1 v os g grade 600 v offset voltage drift 2 ? v os / ? t 1 v/c bias current drift ? i b / ? t 250 pa/c output characteristics output voltage swing high v oh i l = 250 a, C40c t a +125c 4.95 4.99 v i l = 5 ma 4.85 4.94 v output voltage swing low v ol i l = 250 a, C40c t a +125c 14 50 mv i l = 5 ma 65 150 mv short-circuit current i sc short to ground 80 ma maximum output current i out 30 ma power supply power supply rejection ratio psrr v s = 2.7 v to 7 v 120 db C40c t a +125c 90 db supply current/amplifier i sy op162, v out = 2.5 v 600 750 a C40c t a +125c 1 ma op262, op462, v out = 2.5 v 500 700 a C40c t a +125c 850 a dynamic performance slew rate sr 1 v < v out < 4 v, r l = 10 k? 10 v/s settling time t s to 0.1%, a v = C1, v o = 2 v step 540 ns gain bandwidth product gbp 15 mhz phase margin m 61 degrees noise performance voltage noise e n p-p 0.1 hz to 10 hz 0.5 v p-p voltage noise density e n f = 1 khz 9.5 nv/ hz current noise density i n f = 1 khz 0.4 pa/ hz 1 long-term offset voltage is guaranteed by a 1000 hour life test performed on three inde pendent lots at 125c, with an ltpd of 1.3. 2 offset voltage drift is the av erage of the ?40c to +25c delta and the + 25c to +125c delta.
op162/op262/op462 rev. f | page 4 of 20 @ v s = 3.0 v, v cm = 0 v, t a = 25c, unless otherwise noted. table 2. electrical characteristics parameter symbol conditions min typ max unit input characteristics offset voltage v os op162g, op262g, op462g 50 325 v g, h grades, C40c t a +125c 1 mv d grade 0.8 3 mv C40c t a +125c 5 mv input bias current i b 360 600 na input offset current i os 2.5 25 na input voltage range v cm 0 2 v common-mode rejection cmrr 0 v v cm 2.0 v, C40c t a +125c 70 110 db large signal voltage gain a vo r l = 2 k?, 0.5 v v out 2.5 v 20 v/mv r l = 10 k?, 0.5 v v out 2.5 v 20 30 v/mv long-term offset voltage 1 v os g grade 600 v output characteristics output voltage swing high v oh i l = 250 a 2.95 2.99 v i l = 5 ma 2.85 2.93 v output voltage swing low v ol i l = 250 a 14 50 mv i l = 5 ma 66 150 mv power supply power supply rejection ratio psrr v s = 2.7 v to 7 v, C40c t a +125c 60 110 db supply current/amplifier i sy op162, v out = 1.5 v 600 700 a C40c t a +125c 1 ma op262, op462, v out = 1.5 v 500 650 a C40c t a +125c 850 a dynamic performance slew rate sr r l = 10 k? 10 v/s settling time t s to 0.1%, a v = C1, v o = 2 v step 575 ns gain bandwidth product gbp 15 mhz phase margin m 59 degrees noise performance voltage noise e n p-p 0.1 hz to 10 hz 0.5 v p-p voltage noise density e n f = 1 khz 9.5 nv/ hz current noise density i n f = 1 khz 0.4 pa/ hz 1 long-term offset voltage is guaranteed by a 1000 hour life test performed on three inde pendent lots at 125c, with an ltpd of 1.3.
op162/op262/op462 rev. f | page 5 of 20 @ v s = 5.0 v, v cm = 0 v, t a = 25c, unless otherwise noted. table 3. electrical characteristics parameter symbol conditions min typ max unit input characteristics offset voltage v os op162g, op262g, op462g 25 325 v ?40c t a +125c 800 v h grade, C40c t a +125c 1 mv d grade 0.8 3 mv ?40c t a +125c 5 mv input bias current i b 260 500 na ?40c t a +125c 650 na input offset current i os 2.5 25 na ?40c t a +125c 40 na input voltage range v cm C5 +4 v common-mode rejection cmrr ?4.9 v v cm +4.0 v, C40c t a +125c 70 110 db large signal voltage gain a vo r l = 2 k?, C4.5 v v out +4.5 v 35 v/mv r l = 10 k?, C4.5 v v out +4.5 v 75 120 v/mv ?40c t a +125c 25 v/mv long-term offset voltage 1 v os g grade 600 v offset voltage drift 2 ? v os / ? t 1 v/c bias current drift ? i b / ? t 250 pa/c output characteristics output voltage swing high v oh i l = 250 a, C40c t a +125c 4.95 4.99 v i l = 5 ma 4.85 4.94 v output voltage swing low v ol i l = 250 a, C40c t a +125c C4.99 C4.95 v i l = 5 ma C4.94 C4.85 v short-circuit current i sc short to ground 80 ma maximum output current i out 30 ma power supply power supply rejection ratio psrr v s = 1.35 v to 6 v, ?40c t a +125c 60 110 db supply current/amplifier i sy op162, v out = 0 v 650 800 a ?40c t a +125c 1.15 ma op262, op462, v out = 0 v 550 775 a ?40c t a +125c 1 ma supply voltage range v s 3.0 (1.5) 12 (6) v dynamic performance slew rate sr ?4 v < v out < 4 v, r l = 10 k? 13 v/s settling time t s to 0.1%, a v = C1, v o = 2 v step 475 ns gain bandwidth product gbp 15 mhz phase margin m 64 degrees noise performance voltage noise e n p-p 0.1 hz to 10 hz 0.5 v p-p voltage noise density e n f = 1 khz 9.5 nv/ hz current noise density i n f = 1 khz 0.4 pa/ hz 1 long-term offset voltage is guaranteed by a 1000 hour life test performed on three in dependent lots at +125c, with an ltpd of 1.3. 2 offset voltage drift is the av erage of the ?40c to +25c delta and the + 25c to +125c delta.
op162/op262/op462 r e v. f | pa g e 6 of 20 absolute maximum ra tings table 4. p a r a m e t e r m i n supply voltage 6 v input voltage 1 6 v differential input voltage 2 0.6 v internal power dissip a tion soic (s) observ e deratin g curves msop (r m) obs erve derating curves tssop (ru ) observ e deratin g curves output short-ci rcuit duration observ e deratin g curves storage temperature range C65c to +150c operating tem p erature range C40c to +125c junction tempe r ature range C65c to +150c lead temperature range (soldering, 10 sec) 300c 1 for s u pp l y vol t ages greater than 6 v, t h e input vol t age is limited to less than or eq ua l t o t h e sup p ly vo lt a g e. 2 for differ ential input voltages gr eate r than 0.6 v, the input current shou ld be l imited to l e s s than 5 ma to prevent d e grad a tion or d e s t ruction of the input devices. s t r e s s es a b o v e t h os e list e d u nde r a b s o l u te m a xim u m r a t i n g s ma y ca us e p e r m a n e n t dama ge to t h e de vi ce. t h is is a st r e ss r a t i ng on ly ; f u n c t i on a l op e r at i o n of t h e d e v i c e a t t h e s e or an y o t h e r con d i t ions a b o v e t h o s e i ndic a te d i n t h e op er a t ion s e c t ion o f t h is sp e c if ic a t io n is n o t i m pli e d . e x p o sur e t o a b s o l u t e max i m u m r a t i ng co ndi t i on s fo r ex tende d p e r i o d s ma y a f fe c t de vice rel i a b i l i t y . table 5. package type ja 1 jc unit 8-lead soic (s) 157 56 c/w 8-lead tssop (ru) 208 c/w 8-lead msop (rm) 190 44 c/w 14-lead soic (s ) 105 c/w 14-lead tssop (ru) 148 c/w ___ __ __ __ __ __ ___ __ __ __ __ __ __ 1 ja is s p e c if i e d f o r the wo rs t - cas e co nd itio ns, tha t is, ja is s p ecif ied f o r a devi c e so lde r e d i n ci r c ui t boa r d f o r so ic, msop , a n d t s sop pa ck a g e s . esd c a ution esd (electrostatic discharge) sensitive device. ele c tros tatic charg e s as high as 4000 v readily accumulate on the human body and test eq uipment and can discharge wi thout detection. although this product features proprietary esd protection circu i try, permanent dama ge may occur on devices subjected to high energy electrostatic discharges. theref ore, prop er esd precautions a r e recommended to avoid perform a nce degradation or l o ss of functiona l ity.
op162/op262/op462 r e v. f | pa g e 7 of 20 typical perf orm ance cha r acte ristics v s = 5v t a = 25 c count = 720 op amps input offset voltage ( v) quantity (amplifie rs ) 250 200 150 50 100 0 ? 200 ? 140 ?80 ? 20 100 40 160 00288-007 f i gur e 7 . op 46 2 input o ffse t v o l t a g e di str i butio n v s = 5v t a = 25 c count = 360 op amps input offset drift, tcv os ( v, c) quantity ( a mplif iers) 100 80 60 20 40 0 0.2 0.3 0.5 0.7 0.9 1.3 1.1 1.5 00288-008 f i gur e 8 . op 46 2 input o ffse t v o l t a g e dr i f t ( t cv os ) common-mode voltage (v) inp u t curre nt (na) 420 340 260 180 100 0 0.5 1.0 1.5 2.0 3.0 2.5 3.5 4.0 00288-009 v s = 5v f i g u re 9. o p 4 6 2 in put bias cur r ent v s . co mm on-m ode v o lt ag e temperature ( c) input offset voltage ( v) 125 100 75 50 25 0 ? 7 5 ? 50 ?25 0 25 50 100 75 125 150 00288-010 v s = 5v f i g u re 10. op 46 2 i n put o f f s et v o lt ag e v s . t e mpe r at u r e temperature ( c) inp u t bias curre nt (na) 0 ? 100 ? 200 ? 300 ? 400 ? 500 ? 5 0 ? 25 0 2 5 5 0 100 75 125 150 00288? 011 v s = 5v f i g u re 11. op 46 2 i n put bias cur r ent v s . t e mpe r at u r e temperature ( c) inp u t offs e t curre nt (na) 15 10 5 0 ? 7 5 ? 50 ?25 0 25 50 100 75 125 150 00288? 012 v s = 5v f i g u re 12. op 46 2 i n put o f f s et curr e n t v s . t e mpe r at u r e
op162/op262/op462 r e v. f | pa g e 8 of 20 temperature ( c) output high voltage ( v ) 5.12 5.06 5.00 4.94 4.88 4.82 ? 7 5 ? 50 ?25 0 25 50 100 75 125 150 00288-013 v s = 5v i out = 250 a i out = 5ma f i g u re 13. op 46 2 o u t p ut hig h v o lt ag e v s . t e mper at ur e temperature ( c) output low voltage (mv) 0.100 0.080 0.060 0.040 0.020 0.000 ? 7 5 ? 50 ?25 0 25 50 100 75 125 150 00288-014 v s = 5v i out = 250 a i out = 5ma f i g u re 14. op 46 2 o u t p ut l o w v o lt ag e v s . t e mpe r at u r e temperature ( c) open- l oop gain ( v /mv) 100 80 60 40 20 0 ? 7 5 ? 50 ?25 0 25 50 100 75 125 150 00288-015 v s = 5v r l = 10k ? r l = 2k ? r l = 600k ? f i g u re 15. op 46 2 o p en-l oop g a in v s . t e m p er at ure load current (ma) output low voltage (mv) 100 80 60 40 20 0 01 2 3 4 5 6 7 00288-016 v s = 3v v s = 10v f i g u re 16. o u t p ut l o w v o lt ag e t o su p p ly ra il v s . l oad cu rr e n t temperature ( c) s u p p ly curre nt (ma) 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 ? 7 5 ? 50 ?25 0 25 100 75 125 150 00288-017 v s = 5v v s = 10v v s = 3v f i gure 17. sup p l y current/a mp lif ier v s . t e mpe r atu r e supply voltage (v) s u p p l y curre nt (ma) 0.7 0.6 0.5 0.4 02 4 6 8 1 0 1 00288-018 2 t a = 25 c f i g u re 18. op 46 2 s u p p ly cu rrent /a mp lif i e r v s . sup p l y v o lt ag e
op162/op262/op462 r e v. f | pa g e 9 of 20 frequency (hz) gain ( d b) 50 40 30 20 10 0 ?1 0 ?2 0 ?3 0 ph a se sh ift ( d b ) 45 90 135 180 225 270 100k 1m 10m 100m 00288-019 v s = 5v t a = 25 c gain phase f i g u re 19. o p en-l o o p g a in and phas e v s . f r equenc y ( n o l oad) frequency (hz) closed- l oop gain ( d b) 60 40 20 0 ?20 ?30 10k 100k 1m 10m 100m 00288-020 v s = 5v t a = 25 c r l = 830 ? c l = 5pf f i g u re 20. cl os ed-l oop g a in v s . f r equ e nc y frequency (hz) max i mum o u tp ut s w ing (v p-p) 5 4 3 2 1 0 10k 100k 1m 10m 00288-021 v s = 5v a vcl = 1 r l = 10k ? c l = 15pf t a = 25 c distortion<1% f i g u re 21. m a x i mu m o u t p ut swi n g v s . f r equenc y settling time (ns) step size ( v ) 3 1 ?1 ?3 2 4 0 ?2 ?4 0 200 400 600 800 1000 00288-022 0.01% 0.1% 0.01% 0.1% v s = 5v t a = 25 c f i gure 22. step siz e vs. s e ttling t i me capacitance (pf) over sh oot ( % ) 60 40 50 30 20 10 0 10 100 1000 00288-023 v s = 5v t a = 25 c t a = 50mv r l = 10k ? +os ?o s f i gure 23. sm a ll-s i gnal o v ersh oot v s . capa cita nc e frequency (hz) nois e de ns ity (nv / hz) 70 60 50 40 30 10 20 0 1 1 0 100 1k 00288-024 v s = 5v t a = 25 c f i gure 24. v o ltage nois e d e nsi t y v s . f r equenc y
op162/op262/op462 rev. f | pag e 10 of 2 0 frequency (hz) nois e de ns ity (pa/ hz) 7 6 5 4 3 1 2 0 1 1 0 100 1k 00288-025 v s = 5v t a = 25 c f i gure 25. cur r ent nois e d e nsi t y v s . f r equenc y frequency (hz) outp ut imp e dance ( ? ) 300 250 200 150 50 100 0 100k 1m 10m 00288-026 v s = 5v t a = 25 c a vcl = 10 a vcl = 1 f i gure 26. o u tput imped a nce v s . f r eq uenc y frequency (hz) cmrr (db) 90 80 70 60 50 30 40 20 1k 10k 100k 1m 10m 00288-027 v s = 5v t a = 25 c fi g u r e 2 7 . c m r r v s . fr e q u e n c y frequency (hz) p s rr (db) 90 80 70 60 50 30 40 20 1k 10k 100k 1m 10m 00288-028 v s = 5v t a = 25 c +psrr ?psrr fi g u r e 2 8 . p s r r v s . fr e q u e n c y 00288-029 100 90 10 0% v s = 5v a v = 100k ? e n = 0.5 v p-p 2s 20mv f i g u re 29. 0. 1 h z t o 10 h z no is e 10 0% 100 90 00288-030 v in = 12v p-p v s = 5v a v = 1 2v 2v 20 s f i gure 30. no p h as e r e vers a l ( v in = 12 v p - p , v s = 5 v , a v = 1)
op162/op262/op462 rev. f | pag e 11 of 2 0 00288-031 10 0% 100 90 200ns 20mv v s = 5v a v = 1 t a = 25 c c l = 100pf f i g u re 31. sm a ll s i g n al t r ans i ent r e s p ons e 00288-032 10 0% 100 90 100 s 500mv v s = 5v a v = 1 t a = 25 c c l = 100pf f i g u re 32. lar g e s i g n al t r ans i ent r e s p ons e
op162/op262/op462 rev. f | pag e 12 of 2 0 appli c a t ions func ti on a l descripti o n the opx62 fa m i ly is fa b r ic a t e d usin g ana l og d e v i ces hig h s p e e d co m p le men t a r y b i p o la r p r o c es s, als o cal l e d xfc b . this p r o c es s t r en ch i s ola t es e a ch t r an sis t o r t o lo w e r p a rasi t i c ca p a c i - t a n c es fo r hig h s p e e d p e rf o r ma n c e. this hig h sp ee d p r ocess has b e en im plem en t e d wi t h o u t s a c r i f i c i n g t h e e x c e l l e nt t r a n s i s t o r m a tch i ng a n d ove r a l l d c p e r f or m a nc e ch ar a c te r i st i c of a n a l o g de vices com p lem e n t a r y b i p o la r p r o c es s. this mak e s t h e o p x 62 fa mil y a n exce l l e n t ch o i ce as a n extr em e l y fast and acc u ra t e lo w volt age op am p . fi g u re 3 3 sho w s a s i m p l i f i e d e q u i val e n t s c hema t i c f o r t h e o p 162. a pnp dif f er en t i al p a ir is us e d a t t h e i n p u t o f t h e de vic e . th e cr os s co n n ectin g o f th e em i t t e r s lo w e r s th e tra n sco n d u cta n ce o f t h e in p u t st a g e i m p r o v in g t h e s l e w ra t e o f t h e de v i ce . l o w e r i n g th e tra n sco n d u c t a n ce th r o ug h cr os s co n n ect i n g th e em i t t e r s h a s a n o t h e r a d van t age in t h a t i t p r o v ide s a lo w e r n o is e fac t o r t h an if e m itte r d e ge ne r a t i on re s i stor s we re u s e d . t h e i n put st age c a n f u n c t i on wi t h t h e b a s e v o l t a g es t a k e n al l t h e w a y t o t h e n e g a t i ve p o we r su p p ly , or u p to wi t h i n 1 v of t h e p o s i t i v e p o we r sup p ly . v cc v ee +in ?i n v out 00288-033 f i g u re 33. si mpl i f i e d s c h e m a t i c t w o c o m p l e me n t ar y t r ans i stors i n a c o m m on - e m i t t e r co nf igura t io n ar e us e d fo r t h e o u t p ut st a g e . t h is a l lo ws t h e o u t p u t o f the de vice t o swin g t o wi thin 50 mv of ei t h er s u p p l y ra il a t lo ad c u r r en ts les s tha n 1 ma. a s lo ad c u r r en t in cr e a s e s, t h e maxi m u m vol t a g e s w ing o f t h e ou t p u t de cre a s e s. thi s is d u e to t h e c o l l e c tor - to - e mitte r s a t u r a t i on volt age s of t h e out p ut tra n sis t o r s in cr e a sin g . th e ga in o f th e o u t p u t s t a g e , and co n s e - q u en t l y t h e op e n -lo o p ga i n o f t h e am plif ier , is dep e nden t o n t h e lo ad r e sis t a n ce co nn e c te d a t t h e o u t p u t . b e ca us e t h e do mina n t p o l e f r e q u e nc y i s i n v e r s e ly prop or t i on a l to t h e op e n - l o o p g a i n , t h e u n it y - g a i n b a nd w i d t h of t h e d e v i c e i s no t af fe c t e d b y t h e l o a d r e sist a n ce. this is ty p i c a l l y t h e c a s e i n ra i l -t o - ra i l o u t p ut de vices. offse t adjust ment b e ca us e t h e o p 162/o p 262/o p 462 ha v e an excep t io nal l y lo w t y pi c a l of f s e t vol t age, a d j u st me n t to c o r r e c t of fs e t vol t age m a y n o t be n e e d e d . h o w e v e r , t h e o p 162 has p i n o u t s t o a t tac h a n u l l in g r e sis t o r . f i gur e 34 sh o w s h o w t h e o p 162 o f fs et v o l t a g e ca n be ad j u s t e d b y co nn ec tin g a p o t e n t iom e t e r betw een p i n 1 a nd pin 8, and c o nn e c t i n g t h e w i p e r to v cc . i t is im p o r t a n t t o a v o i d accid e n t a l l y co nn e c t i n g t h e wi p e r to v ee , as t h is ca n da ma ge t h e de vi ce . the r e co mm e nde d val u e fo r t h e p o t e n t iomet e r is 20 k?. ?5 v 20k ? op162 +5v v os 3 2 4 7 8 1 6 00288-034 f i gure 34. o ffset adjustment s c h e m a tic ra i l - t o- ra i l o u t p u t the o p 162/o p 262/o p 462 ha ve a wide o u t p u t v o l t a g e ra n g e t h a t e x te nd s to w i t h i n 6 0 m v of e a ch su p p ly r a i l w i t h a l o ad c u rr en t o f 5 ma. d e cr ea sin g t h e l o ad c u rr en t e x t e n d s t h e o u t p u t v o l t age ran g e e ven clo s er t o t h e s u p p l y ra i l s. the comm on- m o d e in p u t ran g e ex t e nd s f r om g r ou n d to w i t h i n 1 v of t h e p o s i t i ve su p p ly . i t is r e co mmende d t h a t t h er e b e s o me m i nim a l am o u n t of ga in w h en a ra il-t o-ra il o u t p u t swin g i s de sir e d . th e min i m u m ga i n re q u ir e d is b a s e d on t h e sup p ly v o lt a g e and can b e fo u n d a s 1 ? = s s v,min v v a w h er e v s i s t h e p o s i t i ve supply vol t age. w i t h a s i ng l e - s upply v o l t a g e o f 5 v , t h e minim u m gain t o achie v e ra i l -t o-ra il o u t p u t s h o u l d be 1.25. outpu t sh ort - circu i t pro t ec ti on t o achie v e a wi de b a n d w i d t h and hig h sl e w ra te, t h e o u t p u t o f th e o p 16 2/o p 2 62/o p 462 a r e n o t s h o r t- cir c ui t p r o t ec t e d . s h o r tin g t h e ou t p u t d i re c t ly to g r ou nd or to a su p p ly r a i l ma y de st ro y t h e de vic e . t h e ty p i ca l max i m u m s a fe o u t p u t c u r r e n t is 30 m a . s t eps sh o u ld b e t a k e n t o en s u r e t h e ou t p u t o f t h e de vic e wi l l n o t be f o r c ed t o s o u r ce o r sink m o r e tha n 30 ma. i n a p p l i c a t i o n s wh e r e so m e o u t p u t curr e n t p r o t ecti o n i s n eeded , b u t n o t a t t h e exp e n s e o f r e d u ce d o u t p u t v o l t a g e h e adr o o m , a lo w val u e r e sis t o r in s e r i es wi t h t h e o u t p u t can b e us e d . this is sh ow n i n fi g u re 3 5 . t h e re s i stor i s c o n n e c te d w i t h i n t h e f e e d - b a ck lo o p o f t h e a m plif ier s o t h a t if v ou t is sh o r te d to g r o u nd
op162/op262/op462 rev. f | pag e 13 of 2 0 a nd v in s w in gs u p t o 5 v , t h e ou t p u t c u r r en t wil l n o t excee d 3 0 ma . f o r s i ng l e 5 v su p p ly a ppl ic a t ions , re s i stors l e ss t h an 169 ? a r e n o t r e co mm ende d . opx62 v in v out 169 ? 5v 00288-035 f i gure 3 5 . o u tput shor t- ci r c ui t p r ot ect i o n input overv o l t a g e pro t ec tion th e i n put volt a g e shou l d b e l i mi te d to 6 v , or dam a ge to t h e d e v i ce ca n occur . electr os ta ti c p r o t ecti o n d i od es p l a c ed i n th e in p u t st a g e o f t h e de vic e h e l p p r o t e c t t h e am plif ier f r o m st a t ic dis c ha rge. dio d es a r e co nn e c te d b e t w e e n e a ch in p u t as wel l as f r o m eac h in p u t t o bo t h s u p p l y p i n s as sho w n in t h e sim p lif i e d eq ui v a l e n t ci r c ui t in f i gur e 33. i f a n i n p u t v o l t a g e e x ceed s e i t h er s u p p l y v o l t a g e b y m o r e t h a n 0.6 v , o r if t h e dif f er en t i al i n p u t v o l t a g e is g r e a te r t h a n 0.6 v , t h e s e di o d es e n erg i ze c a usin g o v er v o l t a g e dama g e . the in p u t c u r r en t sh o u l d b e limi t e d t o les s tha n 5 ma t o p r e v en t deg r a d a t io n o r dest r u c t io n o f t h e d e v i c e b y plac in g an ext e r n al r e s i s t o r in s e r i es wi t h t h e in p u t a t r i s k o f bein g o v e r dr i v en. the si ze o f t h e resis t o r ca n b e c a lc u l a t e d b y di v i di n g t h e maxi- m u m in p u t v o l t a g e b y 5 ma. f o r exa m ple , if t h e dif f er en t i al in p u t v o l t a g e cou l d r e ach 5 v , t h e ext e r n al r e sis t o r s h o u l d b e 5 v/5 ma = 1 k?. i n p r ac tic e , t h is r e sis t o r s h ou ld be place d in s e r i es w i t h b o t h in p u ts t o b a lance a n y o f fs et v o l t a g es cr e a t e d b y t h e in p u t b i a s c u r r en t. output phase reversal the o p 162/o p 262/o p 462 a r e imm u n e t o p h as e r e v e rs al as lo n g as the in p u t v o l t a g e is l i mi ted t o 6 v . f i gu r e 30 s h o w s t h e o u t p ut o f a de v i ce w i t h t h e i n p u t v o l t a g e dr i v en b e yon d t h e s u p p l y v o l t a g es. al t h o u g h t h e de v i ce s o u t p ut do es n o t cha n g e phas e , la rg e c u r r en ts d u e t o i n pu t o v er v o l t a g e c o u l d r e s u l t , da ma g i n g t h e de v i ce . i n a p plic a t io n s w h er e t h e p o s s i b i l i t y o f a n in p u t v o l t a g e exce e d i n g t h e su ppl y v o l t a g e exis t s , o v er v o l t a g e prote c t i on s h ou l d b e u s e d , a s d e s c r i b e d i n t h e pre v i o u s s e c t i o n . po wer diss ip a t ion the max i m u m p o w e r t h a t can b e s a fely di ssi p a t e d b y t h e o p 162/o p 262/o p 462 is limi t e d b y t h e as s o c i a t ed r i s e in j u n c t i o n t e mp e r at u r e . t h e m a x i mu m s a f e j u n c t i o n t e mp e r a t u r e is 150c; device p e r f o r ma n c e suf f ers wh en t h is limi t is e x ceed ed . i f th i s m a xi m u m i s o n l y m o m e n t a r il y e x ceed ed , p r o p er cir c ui t op era t ion wil l b e r e s t o r ed as s o on as t h e die t e m p era t ur e is r e d u ce d . l e a v i n g t h e de vic e i n an o v e rh e a t e d co ndi t i on fo r a n ex tende d p e r i o d can r e su l t i n p e r m a n e n t d a ma g e t o t h e devi ce . t o calc u l a t e t h e in t e r n al j u n c t i on t e m p era t ur e of t h e o p x62, us e th e f o rm ula t j = p di s s ja + t a w h er e: t j i s th e o p x62 j u n c ti o n t e m p e r a t ur e . p di s s is t h e opx 62 p o w e r diss i p a t io n. ja is t h e o p x62 p a cka g e t h er mal r e sis t a n c e , j u n c t i on- t o- amb i e n t te m p e r a t u r e. t a is t h e am b i e n t t e m p er a t ur e o f t h e cir c u i t. the p o wer dissi p a t e d b y t h e de vice can b e ca lc u l a t e d as p di s s = i loa d ( v s C v ou t ) w h er e: i loa d is t h e o p x62 o u t p u t lo ad c u r r en t. v s is t h e op x 6 2 su p p ly vol t age. v ou t i s t h e op x 6 2 out p ut vol t age. f i gur e 36 an d f i gur e 37 p r o v ide a con v enien t wa y t o det e r m in e if t h e d e v i ce is b e in g o v erhe a t e d . the maxi m u m s a fe p o w e r dissi p a t io n ca n b e fo u n d g r a p h i ca l l y , b a s e d o n t h e p a ck a g e ty p e a nd t h e am b i e n t t e m p era t ur e a r o u nd t h e p a ckag e . by usin g t h e p r e v io us e q ua t i o n , i t is a si m p le ma t t e r t o s e e if p dis s e x ceed s th e de vice s p o w e r dera t i n g c u r v e . t o en s u r e p r o p er o p era t io n, i t is im p o r t an t to ob s e r v e t h e r e co m m e nde d der a t i ng c u r v es sh o w n in f i gur e 36 and f i gur e 37. ambient temperature ( c) m a xim u m pow e r d i ssipa tion ( w at t s ) 0.9 0.7 0.8 0.5 0.6 0.1 0.2 0.3 0.4 0 20 40 60 100 80 120 00288-036 8-lead soic 8-lead msop 8-lead tssop f i g u re 36. m a x i mu m p o we r d i s s i pat i o n v s . t e mper at ure f o r 8-l e ad p a ckag e t y pes
op162/op262/op462 rev. f | pag e 14 of 2 0 ambient temperature ( c) m a xim u m pow e r d i ssipa tion ( w at t s ) 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 0.1 0.2 0 20 45 70 95 120 00288-037 14-lead soic 14-lead tssop f i g u re 37. m a x i mu m p o we r d i s s i pat i o n v s . t e mper at ure f o r 14-l e ad p a ck ag e t y pes unused am plifiers i t is r e co mm e nde d t h a t an y un us e d a m pl if iers in a d u a l o r a q u a d p a ck a g e b e co nf igur e d as a uni t y - ga i n fol l o w er w i t h a 1 k ? f eed ba ck r e s i s t o r co n n ec t e d f r o m th e in v e r t i n g i n p u t t o th e o u t p u t , a n d th e n o nin v e r ti n g i n p u t ti e d t o t h e gr o u n d pla n e . po wer- on set t ling time t h e t i me it t a ke s f o r t h e output of an op am p to s e tt l e af te r a su p p ly vol t a g e i s del i ver e d can b e an i m p o r t a n t co n s ider a t ion i n s o me p o w e r - u p -s en s i t i v e a p pli c a t io n s . a n exa m ple o f t h is w o u l d b e i n a n a/d con v er t e r w h er e t h e t i me un t i l v a lid da t a ca n b e p r o d uce d a f t e r p o w e r - up is im p o r t a n t. t h e o p x62 fa mil y has a ra p i d s e t t lin g t i m e a f t e r p o w e r - u p . f i gur e 38 sh o w s th e o p 462 o u t p u t s e t t l i n g t i mes f o r a sin g le- su p p ly vol t age of v s = +5 v . th e t e s t cir c u i t in f i gur e 39 was used t o f i n d t h e po w e r - o n set t lin g tim e s f o r th e d e v i ce . 10 0% 100 90 500n s 2v 50 m v v s = 5v a v = 1 r l = 10k ? 00288-038 f i g u re 38. o s ci ll os cope p h ot o of v s an d v ou t op462 v out 0 to +5v square 10k ? 00288-039 1 f i gure 39. t e s t c i rc uit for p o w e r - o n s e ttling tim e ca p a c i t i v e l o a d d r i v e the o p 162/o p 262/o p 462 a r e hig h s p ee d , extr eme l y acc u ra te de v i c e s t h a t tol e r a te s o me c a p a c i t i ve l o a d i n g a t t h e i r out p ut s . a s lo ad ca p a c i tan c e in cr eas e s, uni t y - ga in b a ndwi d t h o f a n opx 62 de vice decr eas e s. this als o c a us es a n in cr eas e in o v ersh o o t an d s e tt l i n g t i me f o r t h e output . fi g u re 4 1 show s a n e x am pl e of t h i s wi t h t h e d e v i ce co nf igur e d fo r uni t y ga in and dr i v in g a 10 k? r e sis t o r a n d 300 pf ca p a ci t o r p l aced in p a ral l e l . by co nn e c t i n g a s e r i es r - c ne t w o r k, co m m o n ly ca l l e d a s n u b b e r n e t w or k , f r om t h e output of t h e d e v i c e to g r ou n d , t h is r i n g i n g can b e eli m in a t e d and o v ersh o o t can b e sig n if ican tl y r e d u ced . f i gur e 40 s h o w s h o w t o s e t u p the sn ubb e r n e tw o r k, an d f i gur e 42 s h o w s t h e im p r o v emen t in output re sp ons e w i t h t h e n e t w o r k a d d e d. opx62 v in v out r x c x c l 5v 00288-040 f i gure 40. sn ubb e r net w ork com p ens a tio n fo r cap a c i tiv e l oads 00288-041 50 m v 1 s 100 90 10 0% v s = 5v a v = 1 c l = 300pf r l = 10k ? f i g u re 41. a phot o of a r i ng i n g s q ua re w a ve
op162/op262/op462 rev. f | pag e 15 of 2 0 00288-042 10 0% 100 90 50mv 1 s v s = 5v a v = 1 c l = 300pf r l = 10k ? with snubber: r x = 140 ? c x = 10nf f i gur e 45 sh o w s th e w o rs t cas e cr os s t al k betw e e n tw o a m p l if iers in t h e o p 462. a 1 v r m s sig n al is a p p l ie d t o o n e a m p l if ier w h il e m e a s ur in g t h e ou t p ut o f a n a d ja cen t am plif ier . b o t h am plif iers a r e co nf igur e d fo r uni t y ga i n and su p p lie d wi t h 2.5 v . frequency (hz) thd+n (%) 0.010 0.001 0.0001 20 100 1k 10k 20k 00288- 044 v s = 2.5v a v = 1 v in = 1.0v rms r l = 10k ? bandwidth: <10hz to 22khz f i g u re 42. a phot o of a nice s q uare w a ve at t h e o u t p ut the n e tw o r k op era t es i n p a ral l el wi t h t h e lo ad c a p a ci t o r , c l , a nd p r o v ides com p e n s a t i on fo r t h e add e d phas e lag. t h e ac t u a l v a lu e s of t h e ne t w or k re s i stor a n d c a p a c i tor are e m pi r i c a l l y deter m i n e d to mini mi ze o v ersh o o t and max i mi ze un i t y - ga in ba ndwid th. t a ble 6 s h o w s a fe w s a m p le sn u b be r n e tw o r ks fo r la rg e lo ad ca p a c i t o rs. f i gure 44. thd + n vs. f r equenc y frequency (hz) xtalk (dbv) ?40 ?90 ?80 ?70 ?60 ?50 ?140 ?130 ?120 ?110 ?100 20 100 1k 10k 20k 00288- 045 a v = 1 v in = 1.0v rms (0dbv) r l = 10k ? v s = 2.5v table 6. s n ubber networks fo r large capacitive loa d s c load r x c x < 300 pf 140 ? 10 nf 500 pf 100 ? 10 nf 1 nf 80 ? 10 nf 10 nf 10 ? 47 nf h i g h er lo ad ca p a ci tan c e wil l r e d u ce t h e u n i t y-ga in bandwid th of t h e d e v i c e . f i g u re 4 3 show s u n it y - g a i n b a nd w i d t h v s . ca p a ci t i v e lo ad . the sn ubb e r n e tw o r k do es n o t p r o v ide an y i n c r e a s e i n b a n d w i dt h , b u t i t s u b s t a n t i a l l y re du c e s r i ng i n g a n d ov e r s h o o t , a s s h ow n b e t w e e n fi g u r e 4 1 a n d fi g u r e 4 2 . c load bandwidth (mhz) 10 7 8 9 5 6 4 3 2 1 0 10pf 100pf 1nf 10nf 00288-043 fi g u r e 4 5 . c r o s s t a l k v s . fr e q u e n c y pcb l a y o u t c o nsider a t io ns b e ca us e t h e o p 162/o p 262/o p 462 ca n p r o v ide ga in s a t hig h f r e q uen c y , ca r e f u l a t ten t ion to b o a r d la yo u t an d co m p on e n t s e le c t ion is r e commende d . a s wi t h an y hi g h sp e e d a p plic a t ion, a g o o d g r o u n d pla n e is es s e n t ia l t o achie v e t h e o p t i m u m p e r f o r ma n c e . t h is ca n s i g n if ican t l y r e d u ce t h e un des i ra b l e e f f e c t s of g r ou nd l o op s an d i r l o ss e s b y prov i d i n g a l o w i m p e d a nc e re f e re nc e p o i n t . b e st re su lt s are o b t a i n e d w i t h a m u l t i l a y er b o a r d desig n wi t h on e la yer assig n e d to g r o u nd pl ane. u s e ch i p c a p a c i tors for su p p ly b y p a ss ing , wit h one e nd of t h e ca p a ci to r co nne c t e d to t h e g r o u nd plan e and t h e o t her end co nn e c te d w i t h i n 1/8 i n ch o f e a ch p o w e r pin. a n ad di t i o n a l la rg e ta n t al um elec tr ol ytic ca p a ci t o r (4.7 f t o 10 f) s h o u l d b e co n n ec t e d in p a ralle l . t h is ca p a ci t o r p r o v id es c u r r en t f o r fas t , la rg e-sig n al chan g e s a t t h e de vi ce s o u t p u t ; t h erefo r e , i t do es n o t n e ed t o b e p l a c ed a s c l o s e t o th e s u p p l y p i n s . f i g u re 43. u n it y- g a in b a ndw i dt h v s . c lo a d t o t a l har m onic dist ortio n a n d crosst alk t h e op x 6 2 d e v i c e f a m i ly of f e r s l o w tot a l h a r m o n i c d i s t or t i on making i t an exce l l en t ch oice fo r a u dio a p pl ica t io n s . f i gur e 44 s h o w s a g r a p h of thd p l us n o is e f i gur e s a t 0.00 1% f o r th e o p 462.
op162/op262/op462 rev. f | pag e 16 of 2 0 appli c a t ion circuits single-suppl y stereo headphone driver fi g u r e 4 6 s h ow s a s t e r e o h e a d p h o n e o u tpu t a m p l i f i e r t h at c a n o p era t e f r o m a s i n g le 5 v s u p p l y . the r e fer e n c e v o l t a g e is der i v e d b y di vidin g t h e su p p l y v o l t a g e do wn wi t h tw o 100 k? r e sis t o r s. a 10 f ca p a ci t o r p r even ts p o w e r s u p p l y n o is e f r o m co n t a m ina t in g t h e a u dio sig n a l a nd est a b l ish e s a n ac g r o u nd fo r t h e v o l u m e c o nt r o l p o t e nt i o m e t e r s . t h e a u d i o s i gn al i s a c - c o u p l ed t o ea c h n o n i n v e r ti n g in p u t t h r o ug h a 10 f ca p a ci t o r . t h e ga in o f t h e am plif ier is co n - tr o l led b y th e f eed ba ck r e si s t o r s a n d i s (r 2/ r 1 ) + 1. f o r th i s exa m p l e , t h e ga in is 6. b y r e m o vin g r1, t h e a m plif ier w o u l d h a ve u n it y g a i n . t o shor t - c i rc u i t prote c t t h e output of t h e de vic e , a 169 ? r e sis t o r is p l aced a t t h e o u t p u t in t h e f eedbac k n e tw o r k. this p r ev en ts an y dama g e t o t h e de vice if t h e h e ad - p h on e o u t p u t b e co m e s s h o r t e d . a 270 f ca p a c i t o r is us ed a t t h e ou t p u t t o cou p le t h e a m pl if ier t o t h e h e ad ph on e . this va l u e i s m u c h la r g e r th a n th a t used f o r th e in p u t beca use o f th e lo w im p e dan c e o f head ph on es, w h ic h can ra n g e f r o m 32 ? t o 600 ? or more. op262-a 5v 169 ? 270 f 47k ? l volume control r1 = 10k ? 10 f 10 f 10k ? 5v 100k ? 10 f 100k ? r2 = 50k ? left in op262-b 5v 169 ? 270 f 47k ? headphone right headphone left 10k ? r volume control 10 f right in r2 = 50k ? 10 f r1 = 10k ? 00288-046 f i gure 46. headph one o u tput a m plifier instrument a t io n am plifier b e ca us e o f t h e i r hig h s p e e d , lo w o f fs et v o l t a g es, a nd lo w n o is e c h a r ac t e r i s t ics, th e o p 162 /o p2 62/o p 462 ca n b e us ed in a wide va r i ety o f hi g h sp e e d a p plic a t ion s , i n cl u d in g p r e c isio n inst r u - m e n t a t io n am pl if iers. f i gur e 47 sho w s an exa m ple o f such a n ap p l i c at i o n . op462-a op462-b op462-c op462-d ? v in + v in 1k ? 10k ? 2k ? 1.9k ? 200 ? 10 turn (optional) output r g 1k ? 10k ? 2k ? 2k ? 00288-047 f i gure 47. h i gh spe e d ins t ru ment atio n a m pl ifi e r the dif f er en t i al ga in o f t h e cir c u i t is de t e r m i n e d b y r g , w h er e g diff r a 2 1 + = wi t h t h e r g r e sis t o r val u e i n k?. re m o vi n g r g s e ts t h e cir c u i t ga in t o uni t y . the f o ur th o p a m p , o p 462-d , is o p tio n al and is us ed t o im p r o v e cmrr b y r e d u ci n g an y in p u t ca p a c i t a n c e t o t h e a m plif ier . by shi e ld in g t h e in p u t sig n a l le ads and dr ivi n g t h e shi e l d w i t h t h e c o mmon- m o d e vol t age, i n put c a p a c i t a nc e i s e l im in a t e d a t comm on- m o d e vol t a g es. this v o lt a g e is d e r i v e d f r o m th e mid p o i n t o f t h e o u t p u t s o f o p 462-a and o p 462-b b y usin g tw o 10 k? r e sis t o r s f o l l o w ed b y o p 462-d as a uni t y - ga in bu f f e r . i t is im p o r t a n t to us e 1% o r b e t t er t o lera n c e com p on e n ts fo r t h e 2 k? r e sisto r s, as t h e co m m o n - m o d e r e j e c t io n is dep e nden t o n th eir ra ti os bein g exa c t. a po t e n t i o m e t e r s h o u ld al so be c o n n ect e d i n se ri e s w i th th e o p 4 62- c n o n i n v e r ti n g i n p u t r e s i s t o r t o gr o u n d to opt i m i z e c o mmon- m o d e re j e c t i o n. th e c i rc u i t i n f i g u re 4 7 w a s i m pl e m e n te d to te st i t s s e t t l i ng t i me. t h e i n st r u me n t a t i o n a m p w a s p o we re d w i t h ? 5 v , s o t h e in p u t s t ep v o l t ag e w e n t f r o m ? 5 v t o +4 v t o k e ep the o p 462 wi t h i n i t s i n p u t ra n g e . th er efo r e , t h e 0.05 % s e t t lin g ra n g e is when t h e o u t p u t is wi thin 4.5 mv . f i gur e 48 sho w s the p o si ti ve s l o p e s e t t lin g tim e t o be 1.8 s , a nd f i gur e 49 sh o w s a s e t t lin g tim e o f 3. 9 s f o r th e n e ga ti v e s l o p e .
op162/op262/op462 rev. f | pag e 17 of 2 0 00288-048 10 0% 100 90 1 s 5mv 2v f i gure 4 8 . p o si t i v e sl o p e s e ttl ing ti me 00288-049 10 0% 10 0 90 5m v 1 s 10 0% 100 90 1 s 5mv 2v f i gure 4 9 . neg a ti v e slo p e settli n g time direc t a c c e ss arr a ngement f i gur e 50 sh o w s a s c h e ma tic f o r a 5 v sin g le-s u p p l y tra n smi t / r e cei v e te leph o n e l i n e in t e r f ace f o r 600 ? tra n smis sio n sys t em s . i t al lo ws f u l l -d u p lex tra n smis sio n o f sig n als o n a tra n sfo r m e r - co u p led 600 ? line . am p l if ier a1 p r o v ides ga in tha t can b e ad j u s t e d t o m e e t t h e m o de m o u t p u t dr i v e r e q u i r em e n ts. b o t h a1 and a2 a r e c o nf i g ur e d t o a ppl y t h e l a rge s t p o s s i b le dif f ere n t i al sig n al t o t h e t r an sfo r m e r . the l a rg es t sig n al a v aila b l e on a si n g l e 5 v s u p p l y is a p p r o x ima t e l y 4.0 v p-p in t o a 60 0 ? tra n smis sio n sy st em. a m plif i e r a3 is co nf igur e d as a d i f f er ence a m plif ier t o ext r ac t t h e r e ceiv e info r m a t io n f r o m t h e t r a n s m is sio n l i n e fo r a m plif ic a t ion b y a4. a3 a l s o p r e v en ts t h e t r a n s m i t sig n a l f r o m in t e r f er in g w i t h t h e r e ce i v e sig n al . t h e g a i n o f a 4 c a n b e a d j u s t e d in t h e s a me mann er as a1 t o me et t h e m o dem s in p u t sig n al r e q u ir emen t s . s t a nda rd r e sis t o r val u es p e r m i t t h e us e o f s i p (sin g l e in-l ine p a cka g e) fo r m a t r e sis t o r a r ra ys. c o u p le t h is w i t h th e o p 462 14 -le a d so i c o r tss o p p a c k a g e and this cir c ui t o f fers a co m p ac t s o l u t i o n . 6.2v 6.2v transmit txa receive rxa 2k p1 tx gain adjust a1 a2 a3 a4 a1, a2 = 1/2 ad8532 a3, a4 = 1/2 ad8532 r3 360 ? z o 600 ? r1 10k ? r13 10k ? r10 10k ? r9 10k ? r11 10k ? c2 0.1 f c1 0.1 f 10 f r12 10k ? r7 10k ? r8 10k ? r5 10k ? r6 10k ? r14 14.3k ? r2 9.09k ? 1:1 t1 to telephone line 1 2 3 7 6 5 2 3 1 6 5 7 p2 rx gain adjust 2k ? 5v dc midcom 671-8005 00288-050 f i gure 50. sing l e -s up ply d i rec t ac c e s s a r r a ngem ent fo r mode ms
op162/op262/op462 rev. f | page 18 of 20 spice macro-model * op162/op262/op462 spice macro-model * 7/96, ver. 1 * troy murphy / adsc * * copyright 1996 by analog devices * * refer to ?readme.doc? file for license statement. use of this model * indicates your acceptance of the terms and provisions in the license * statement * * node assignments * noninverting input * | inverting input * | | positive supply * | | | negative supply * | | | | output * | | | | | * | | | | | . subckt op162 1 2 99 50 45 * *input stage * q1 5 7 3 pix 5 q2 6 2 4 pix 5 ios 1 2 1.25e-9 i1 99 15 85e-6 eos 7 1 poly(1) (14, 20) 45e-6 1 rc1 5 50 3.035e+3 rc2 6 50 3.035e+3 re1 3 15 607 re2 4 15 607 c1 5 6 600e-15 d1 3 8 dx d2 4 9 dx v1 99 8 dc 1 v2 99 9 dc 1 * * 1st gain stage * eref 98 0 (20, 0) 1 g1 98 10 (5, 6) 10.5 r1 10 98 1 c2 10 98 3.3e-9 * * common-mode stage with zero at 4khz * ecm 13 98 poly (2) (1, 98) (2, 98) 0 0.5 0.5 r2 13 14 1e+6 r3 14 98 70 c3 13 14 80e-12 * * pole at 1.5mhz, zero at 3mhz * g2 21 98 (10, 98) .588e-6 r4 21 98 1.7e6 r5 21 22 1.7e6 c4 22 98 31.21e-15 * * pole at 6mhz, zero at 3mhz * e1 23 98 (21, 98) 2 r6 23 24 53e+3 r7 24 98 53e+3 c5 23 24 1e-12 * * second gain stage * g3 25 98 (24, 98) 40e-6 r8 25 98 1.65e+6 d3 25 99 dx d4 50 25 dx * * output stage * gsy 99 50 poly (1) (99, 50) 277.5e-6 7.5e-6 r9 99 20 100e3 r10 20 50 100e3 q3 45 41 99 pout 4 q4 45 43 50 nout 2 eb1 99 40 poly (1) (98, 25) 0.70366 1 eb2 42 50 poly (1) (25, 98) 0.73419 1 rb1 40 41 500 rb2 42 43 500 cf 45 25 11e-12 d5 46 99 dx d6 47 43 dx v3 46 41 0.7 v4 47 50 0.7 . model pix pnp (bf=117.7) .model pout pnp (bf=119, is=2.782e-17, vaf=28, kf=3e-7) .model nout npn (bf=110, is=1.786e-17, vaf=90, kf=3e-7) .model dx d () .ends
op162/op262/op462 rev. f | pag e 19 of 2 0 outline dimensions 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 1.75 (0.0688) 1.35 (0.0532) seating plane 0.25 (0.0098) 0.10 (0.0040) 4 1 85 5. 00 ( 0 . 1 9 68) 4. 80 ( 0 . 1 8 90) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2440) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarity 0.10 controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-012aa f i g u re 51. 8-l e ad s t anda r d s m a l l o u t l ine p a ckag e [soic ] nar r o w b o dy s-suffix (r-8) di me nsio ns sho w n i n mi ll im e t e r s a n d (i nc he s) 0.80 0.60 0.40 8 0 4 8 1 5 4.90 bsc pin 1 0.65 bsc 3.00 bsc seating plane 0.15 0.00 0.38 0.22 1.10 max 3.00 bsc coplanarity 0.10 0.23 0.08 compliant to jedec standards mo-187aa f i g u re 52. 8-l e ad m i ni s m al l o u t l ine p a ck ag e [m sop ] (rm-8) di me nsio ns sho w n i n mi ll im e t e r s 8 5 4 1 pin 1 0.65 bsc seating plane 0.15 0.05 0.30 0.19 1.20 max 0.20 0.09 8 0 6.40 bsc 4.50 4.40 4.30 3.10 3.00 2.90 coplanarit y 0.10 0.75 0.60 0.45 compliant to jedec standards mo-153aa f i g u re 53. 8-l e ad t h in s h ri nk s m a ll o u t lin e p a ck ag e [ t s s op ) (r u-8) di me nsio ns sho w n i n mi ll im e t e r s 4.50 4.40 4.30 14 8 7 1 6.40 bsc pin 1 5.10 5.00 4.90 0.65 bsc seating plane 0.15 0.05 0.30 0.19 1.20 max 1.05 1.00 0.80 0.20 0.09 8 0 0.75 0.60 0.45 coplanarity 0.10 compliant to jedec standards mo-153ab-1 f i gure 54. 1 4 -l ead thin shr i nk s m a l l o u tline p a ckage [ t ssop ] (ru - 14) di me nsio ns sho w n i n mi ll im e t e r s controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design coplanarit y 0.10 14 8 7 1 6.20 (0.2441) 5.80 (0.2283) 4.00 (0.1575) 3.80 (0.1496) 8.75 (0.3445) 8.55 (0.3366) 1.27 (0.0500) bsc seating plane 0.25 (0.0098) 0.10 (0.0039) 0.51 (0.0201) 0.31 (0.0122) 1.75 (0.0689) 1.35 (0.0531) 8 0 0.50 (0.0197) 0.25 (0.0098) 1.27 (0.0500) 0.40 (0.0157) 0.25 (0.0098) 0.17 (0.0067) compliant to jedec standards ms-012ab 45 f i g u re 55. 1 4 -l ead st anda r d s m al l o u t line p a ckag e [s oi c ] nar r ow b o dy s-suffix (r-14) di me nsio ns sho w n i n mi ll im e t e r s a n d (i nc he s)
op162/op262/op462 rev. f | pag e 20 of 2 0 ordering guide model temperature r a nge package desc ri ption package option branding op162gs ?40c to +125c 8-lead soic s-suffix (r-8 ) op162gs-reel ?40c to +125 c 8-lead soic s-suffix (r-8 ) op162gs-reel7 ?40c to +125 c 8-lead soic s-suffix (r-8 ) op162gsz 1 ?40c to +125c 8-lead soic s-suffix (r-8 ) op162gsz-reel 1 ?40c to +125c 8-lead soic s-suffix (r-8 ) op162gsz-reel 7 1 ?40c to +125c 8-lead soic s-suffix (r-8 ) op162dru-ree l ?40c to +125c 8-lead tssop ru-8 op162druz-re el 1 ?40c to +125c 8-lead tssop ru-8 op162hru-ree l ?40c to +125c 8-lead tssop ru-8 op162hruz-re el 1 ?40c to +125c 8-lead tssop ru-8 op162drm-re e l ?40c to +125c 8-lead msop rm-8 and op162drmz-re el 1 ?40c to +125c 8-lead msop rm-8 aoj op262dru-ree l ?40c to +125c 8-lead tssop ru-8 op262druz-re el 1 ?40c to +125c 8-lead tssop ru-8 op262gs ?40c to +125c 8-lead soic s-suffix (r-8 ) op262gs-reel ?40c to +125 c 8-lead soic s-suffix (r-8 ) op262gs-reel7 ?40c to +125 c 8-lead soic s-suffix (r-8 ) op262gsz 1 ?40c to +125c 8-lead soic s-suffix (r-8 ) op262gsz-reel 1 ?40c to +125c 8-lead soic s-suffix (r-8 ) op262gsz-reel 7 1 ?40c to +125c 8-lead soic s-suffix (r-8 ) op262hru-ree l ?40c to +125c 8-lead tssop ru-8 op262hruz-re el 1 ?40c to +125c 8-lead tssop ru-8 op462dru-ree l ?40c to +125c 14-lead tssop ru-14 op462druz-re el 1 ?40c to +125c 14-lead tssop ru-14 op462ds ?40c to +125c 14-lead soic s-suffix (r-14 ) op462ds-reel ?40c to +125 c 14-lead soic s-suffix (r-14 ) op462ds-reel7 ?40c to +125 c 14-lead soic s-suffix (r-14 ) op462dsz 1 ?40c to +125c 14-lead soic s-suffix (r-14 ) op462dsz-reel 1 ?40c to +125c 14-lead soic s-suffix (r-14 ) op462dsz-reel 7 1 ?40c to +125c 14-lead soic s-suffix (r-14 ) op462gs ?40c to +125c 14-lead soic s-suffix (r-14 ) op462gs-reel ?40c to +125 c 14-lead soic s-suffix (r-14 ) op462gs-reel7 ?40c to +125 c 14-lead soic s-suffix (r-14 ) op462gsz 1 ?40c to +125c 14-lead soic s-suffix (r-14 ) op462gsz-reel 1 ?40c to +125c 14-lead soic s-suffix (r-14 ) op462gsz-reel 7 1 ?40c to +125c 14-lead soic s-suffix (r-14 ) op462hru-ree l ?40c to +125c 14-lead tssop ru-14 op462hruz-re el 1 ?40c to +125c 14-lead tssop ru-14 1 z = pb- f re e pa rt . ? 2005 analo g de vices, inc. all rights reserve d . tra d em arks and registered tra d ema r ks are the prop erty of their respective owners . c00288C0 C 1/05(f)

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