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?1 description the CXA2002r is a bipolar ic developed as recording/playback amplifiers for hi8 vcrs. features recording/playback system wideband recording/playback amplifier for hi8 vcr supports electronic volume (evr) control (3v) recording system recording amplifier feedback dumping circuit and its evr control function facilitates printed circuit board design. five-input (y, chroma, afm, atf and pcm) mix amplifier and evr control function of y and low- band recording level ramp circuit for the recording amplifier output bias current playback system playback amplifier feedback dumping circuit facilitates printed circuit board design. middle-band compensation circuit (middle tune) and independent adjustments of the center frequency, q and boost by evr rfagc and dropout detection circuits absolute maximum ratings supply voltage v cc 7v operating temperature topr ?0 to +75 ? storage temperature tstg ?5 to +150 ? allowable power dissipation p d 1100 mw (when mounted on the printed circuit board) recommended operating condition supply voltage 4.75 +0.5 ?.25 v vcc evr voltage 3.15 0.15 v CXA2002r 48 pin lqfp (plastic) e95201-st 2-channel recording/playback amplifier application 8 mm vcr structure bipolar silicon monolithic ic sony reserves the right to change products and specifications without prior notice. this information does not convey any licens e by any implication or otherwise under any patents or other right. application circuits shown, if any, are typical examples illustr ating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits.
CXA2002r ? 2 block diagram h e a d r e c v / i r a m p g e n 1 5 d b 4 0 d b v p s w 1 v p s w 2 p c m v i d e o y g c a 1 1 1 1 1 1 2 c g c a l o w g c a l o w g c a r f a g c a g c d e t d o c d e t m t 6 d b 1 2 d b m u t e 2 c h 1 c h m u t e 2 c h 1 c h p c m s w v i d e o s w r e c h e a d 4 0 d b 1 5 d b v / i r a m p g e n r a m p c o n t r a m p r f s w p b o t h r e c r p p b m t q m t f 0 m t g p c m o u t m t o u t 4 0 3 9 3 8 3 7 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 6 3 5 3 4 3 1 3 2 3 3 v p p c m i n r e c p c m v p v t r i n r e c v i d e o v r e g g n d i r 1 i r v g 2 p c m i n p c m r e c a t f i n c c o n t a f m i n a f r e c c i n l o w l e v e l y i n y l e v e l r f a g c o u t r f a g c t c r f a g c i n d o c d e t d o p v c c 2 r e c 2 c o n t r e c 2 o u t p b 2 i n p b d u m p 2 p b d u m p 1 g n d 1 p b 1 i n r e c 1 o u t r e c 1 c o n t v c c 1 g n d 2 v c c v c c e v r p c m v i d e o
CXA2002r ? 3 pin description 1 ccont evr adjusting pin for the recording chroma level. increasing the applied voltage reduces the gain. 2 afmin input pin for recording afm. dc component is cut by built-in c. input level: 125mvp-p (typ.) 3 afrec after-recording mode switchover pin (high: after- recording) h: 2.3v or above l: 0.6v or below 4 cin 2.45 recording chroma input pin. input after cutting dc component with c. input level: 300mvp-p (typ.) 1 1 4 3 5 0 k 1 0 k 2 5 k 1 5 k 7 k 7 k 2 1 4 3 2 0 p 7 0 5 0 k 1 4 3 3 5 3 3 5 3 5 1 . 5 v 1 4 3 2 . 4 5 v 7 0 5 0 k 4 pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 4 5 lowlevel evr adjusting pin for recording rf. increasing the applied voltage reduces the gain. simultaneous adjustment of video and pcm paths. video path: c+afm+atf adjustment pcm path: atf adjustment 6 yin 2.45 recording y input pin. input after cutting dc component with c. input level: 500mvp-p (typ.) 7 ylevel evr adjusting pin for the recording y signal level. increasing the applied voltage reduces ylev. 8 rfagcout 2.8 playback y signal output pin. output level: 410mvp-p (typ.) 1 4 3 5 0 k 1 0 k 2 5 k 1 5 k 7 k 7 k 5 1 4 3 4 0 5 0 k 2 . 4 5 v 6 1 4 3 5 0 k 1 0 k 2 5 k 1 5 k 7 k 7 k 7 8 4 0 6 0 0 4 1 0 pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 5 9 rfagctc pin to apply time constant of rfagc. evr adjustment of rfagc gain is possible. adjustment range: ( 2.5v to 4.75v ) gain: small to large 10 rfagcin rfagc input pin for the playback y signal. playback video signal output to pin 14 (mtout) is input again to pin 10 (rfagcin) via external atf trap, afm trap and c trap. dc component is cut by built-in c. 11 docdet 2.5 pin to determine the dropout detection level. 12 dop h: 3.15 l: 0 output pin for the dropout detection signal. high upon dropout. 1 4 3 5 0 5 0 2 5 2 5 9 1 4 3 5 0 5 0 k 3 . 2 5 v 1 0 1 3 p 1 4 3 5 0 7 9 k 1 1 4 7 k 4 . 1 5 v 1 2 1 5 0 2 . 4 k 1 . 3 m 3 . 1 5 v 9 v c c 4 7 0 0 p 4 7 0 k pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 6 14 mtout 2.4 output pin for playback video signal. y + c + amf + atf is output. 13 v cc evr 3.15 power supply pin for evr block. 15 mtg evr adjusting pin for the middle-tune boost. increasing the applied voltage reduces the boost. 16 pcmout 2 output pin for playback pcm 17 mtf0 evr adjusting pin to determine middle-tune fo. increasing the applied voltage increases fo. 4 0 4 0 0 1 4 3 3 0 1 4 3 5 0 k 1 0 k 2 5 k 1 5 k 7 k 7 k 1 5 4 0 3 6 0 1 6 3 . 5 k 3 1 0 1 4 3 5 0 k 1 0 k 2 5 k 1 5 k 7 k 7 k 1 7 pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 7 18 rp pb rec/pb switchover pin high: pb 2.3v or above low: rec 0.6v or below 19 v cc 4.75 power supply pin for components other than rec amplifier, pb amplifier and evr. 20 both rec each rec/both rec switchover pin. high: both rec 2.3v or above low: each rec 0.6v or below 21 rfswp rfswp input pin. high: 2.3v or above low: 0.6v or below 22 ramp pin to turn on/off the rec amplifier bias current during after-recording. the bias current turns on when this pin goes high. high: 2.3v or above low: 0.6v or below 1 8 5 0 k 1 4 3 6 . 1 k 3 5 3 5 3 5 1 . 5 v 1 4 3 3 5 3 5 3 5 1 . 5 v 2 0 1 4 3 3 5 3 5 3 5 1 . 5 v 2 1 1 4 3 3 5 3 5 3 5 1 . 5 v 2 2 pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 8 23 rampcont ramp pulse rising slope switchover pin. low: 32 a/ s 0.6v or below high: 17 a/ s 2.3v or above (the fall time is 32 a/ s in both cases.) 25 v cc 1 4.75 power supply pin for ch1 rec amplifier and pb amplifier. 24 mtq evr adjusting pin to determine middle-tune q. increasing the applied voltage increases q. 26 rec1cont evr adjusting pin for the ch1 recording dumping level. reducing the applied voltage strengthens dumping. 27 rec1out ch1 recording output pin. open collector. 1 4 3 3 5 3 5 3 5 1 . 5 v 2 3 1 4 3 5 0 k 1 0 k 2 5 k 1 5 k 7 k 7 k 2 4 2 6 1 4 3 2 7 0 7 1 k 4 0 4 0 3 4 k 6 6 k 2 7 3 0 1 k 1 2 k 5 . 7 k pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 9 28 pb1in 0.7 ch1 playback input pin. 29 gnd1 0 gnd pin for ch1 rec amplifier and pb amplifier. 30 pbdump1 2.5 pin to determine the dumping of ch1 playback by external resistance. increasing resistance strengthens dumping. 31 pbdump2 2.5 pin to determine the dumping level of ch2 playback by external resistance. increasing resistance strengthens dumping. 32 gnd2 0 gnd pin for ch2 rec amplifier and pb amplifier. 2 8 1 . 2 m 2 . 5 k 1 . 5 v 2 7 0 3 0 4 0 4 k 1 2 0 4 k 4 k 1 3 0 2 7 0 4 0 4 k 1 2 0 4 k 4 k 1 3 0 3 1 pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 10 33 pb2in 0.7 ch2 playback input pin. 36 v cc 2 4.75 power supply pin for ch2 rec amplifier and pb amplifier. 34 rec2out ch2 recording output pin. open collector. 35 rec2cont evr adjusting pin for the ch2 recording dumping. reducing the applied voltage strengthens dumping. 37 vppcmin 2.45 vpsw input pin for recording pcm path. the pin 38 signal is input after cutting its dc component with external c. 1 . 2 m 2 . 5 k 1 . 5 v 3 3 3 4 3 0 1 k 1 2 k 5 . 7 k 1 4 3 2 7 0 7 1 k 4 0 4 0 3 4 k 6 6 k 3 5 3 7 1 4 3 2 . 4 5 v 5 0 k 2 0 4 0 pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 11 38 recpcm 2.4 output pin for the recording pcm path. the recording pcm signal and the recording atf signal are mixed and output. 39 vreg 4.15 4.15v regulator output pin. 40 vpvtrin 2.45 vpsw input pin for the recording video path. the pin 41 signal is input after cutting its dc component with external c. 41 recvideo 2.4 output pin for the recording video path. the recording (y + c + afm + atf) mix signal is output. 2 5 1 8 0 3 8 2 2 0 6 k 3 9 1 0 k 5 p 1 4 3 2 . 4 5 v 5 0 k 2 0 4 0 4 0 4 0 6 k 3 0 0 4 1 2 2 0 pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 12 43 ir1 1.9 pin to determine rec amplifier gain. the reference current is produced by connecting 15k between this pin and gnd. 42 gnd 0 gnd pin for all components other than rec amplifier and pb amplifier. 44 ir 1.9 pin to produce the reference current for the middle tune, dropout detector and ramp. connect 18k between this pin and gnd. 45 vg2 2.45 2.45v internal reference voltage source. 46 pcmin 2.45 recording pcm input pin. input after cutting dc component with c. input level: 300mvp-p (typ.) 4 3 1 k 2 0 k 4 0 4 0 k 4 0 k 4 . 1 5 v 1 k 2 0 k 4 0 4 2 k 4 0 k 4 . 1 5 v 4 4 2 0 k 7 5 3 4 . 5 k 4 9 k 4 . 1 5 v 4 5 2 7 0 4 k 1 4 3 7 0 5 0 k 2 . 4 5 v 4 6 pin no. symbol pin voltage equivalent circuit description
CXA2002r ? 13 pin no. 47 pcmrec pcm recording switchover pin. pcm recording is performed when this pin goes high. high: 2.3v or above low: 0.6v or below 48 atfin 2.45 recording atf input pin. input after cutting dc component with c. input level: 125mvp-p (typ.) symbol pin voltage equivalent circuit description 1 4 3 3 5 3 5 3 5 1 . 5 v 4 7 1 4 3 7 0 5 0 k 2 . 4 5 v 4 8
CXA2002r ? 14 ic internal consumption current (including rec amplifier output bias current) during switched recording. ic internal current during playback. ic internal current (including rec amplifier output bias current) during after-recording. measure the pin voltage. measure the pin voltage. pin 7 (ylevel) = 3.15v adjust pin 7 (ylevel) so that pin 41 (recvideo) output level becomes 200mvp-p ? v ylev pin 7 (ylevel) = 0.0v 14mhz level/300khz level pin 7 (ylevel) = v ylev pin 7 (ylevel) = v ylev pin 5 (lowlevel) = 3.15v pin 7 (ylevel) = vylev adjust pin 5 (lowlevel) so that pin 41 (recvideo) output level becomes 12.5mvp-p ? v ilev pin 7 (ylevel) = v ylev pin 5 (lowlevel) = 0.0v pin 7 (ylevel) = v ylev pin 5 (lowlevel) = 0.0v pin 7 (ylevel) = v ylev 1 2 3 4 5 6 7 8 9 10 11 12 13 14 i rec i pb i afrec v reg v g2 g y min g y cen g y max v fy d y gl v min gl v cen gl v max d afm 6 6 6 6 6 2 2 2 2 500mvpp 500mvpp 200mvpp 500mvpp 500mvpp 125mvpp 125mvpp 125mvpp 125mvpp 300khz 300khz 300khz 14mhz, 300khz 7mhz 1.7mhz 1.7mhz 1.7mhz 1.7mhz a g i a a a a a a a a a a a ivcc1+ ivcc2 ivcc1+ ivcc2 ivcc1+ ivcc2 39 45 41 41 41 41 41 41 41 41 41 33 26 45 3.95 2.30 ?.6 ?.5 ?4.0 47 37 64 4.15 2.45 ?3.2 ?.0 ?.3 ?.5 ?5 ?0.4 ?0 ?1.6 ?5 61 48 83 4.35 2.60 ?4.1 +0.5 ?6.0 ma ma ma v v db db db db db db db db db current consumption for recording current consumption for playback current consumption for after- recording vreg pin voltage vg2 pin voltage recording system y signal gca min. gain y signal gca center gain y signal gca max. gain y signal gca frequency response (center gain) y signal gca secondary distortion (center gain) low-band signal gca (video path) min. gain low-band signal gca (video path) center gain low-band signal gca (video path) max. gain afm path secondary distortion electrical characteristics * see the control logic truth table for control logic conditions. (vcc = 4.75v, vccevr = 3.15v, ta = 25 c. see the electrical characteristics measurement circuit.) no. item symbol measurement conditions input condition input pin level fre- quency control logic measure- ment point, ammeter name measurement method min. typ. max. unit
CXA2002r ? 15 pin 5 (lowlevel) = 0.0v pin 7 (ylevel) = v ylev pin 5 (lowlevel) = 3.15v pin 5 (lowlevel) = 0.0v pin 5 (lowlevel) = vl lev pin 7 (ylevel) = v ylev pin 1 (ccont) = 3.15v adjust pin 1 (ccont) so that pin 41 (recvideo) output level becomes 50mvp-p ? v clev pin 5 (lowlevel) = vl lev pin 7 (ylevel) = v ylev pin 5 (lowlevel) = vl lev pin 7 (ylevel) = v ylev pin 1 (ccont) = 0.0v pin 5 (lowlevel) = vl lev pin 7 (ylevel) = v ylev pin 1 (ccont) = v clev 2mhz level/300khz level pin 5 (lowlevel) = vl lev pin 7 (ylevel) = v ylev pin 1 (ccont) = v clev 14mhz gain/300khz gain measure dc currents. pin 26 (rec1cont), pin 35 (rec2cont) = 3.3v 15 16 17 18 19 20 21 22 23 24 25 26 g vatf g patf1 g patf2 gcmin gccen gcmax v fc d c g p v fp d p i b1 i b2 48 48 48 4 4 4 4 4 46 46 46 125mvpp 125mvpp 125mvpp 300mvpp 300mvpp 300mvpp 300mvpp 300mvpp 300mvpp 300mvpp 300mvpp 100khz 100khz 100khz 300khz 300khz 300khz 2mhz 300khz 750khz 300khz 14mhz 300khz 7mhz a a a a a a a a a a a b a 41 38 38 41 41 41 41 41 38 38 38 ib1 ib2 ?4.0 ?4.0 ?3.3 ?.5 ?.5 ?.8 14.55 ?1.6 ?0.7 ?1.9 ?6.4 ?5.6 ?0.5 0 ?0 ?.7 0.0 ?5 18.8 ?6.0 ?1.6 +0.5 ?.9 +0.8 23.05 db db db db db db db db db db db ma atf (video path) max. gain atf (pcm path) min. gain atf (pcm path) max. gain chroma signal gca min. gain chroma signal gca center gain chroma signal gca max. gain chroma signal gca frequency response (center gain) chroma signal gca secondary distortion (center gain) pcm signal path gain pcm signal path frequency response pcm signal path secondary distortion rec amplifier output bias current 1ch 2ch no. item symbol measurement conditions input condition level measurement method min. typ. max. unit input pin fre- quency control logic measure- ment point, ammeter name
CXA2002r ? 16 pin 26 (rec1cont), pin 35 (rec2cont) = 3.3v output level (vp-p)/51 ( ) 27 i r1 i r2 1ch 2ch 1ch 2ch 40 200mvpp 1mhz b a 27 34 18.1 20.7 23.3 mapp rec amplifier output current 10mhz level/1mhz level 28 v fr1 v fr2 40 200mvpp 10mhz 1mhz b a b a b a k h h g g h g g g 27 34 27 34 27 34 27 34 14 16 8 8 8 ?.2 db 32 a/ s 32 a/ s 17 a/ s 58.0 61.5 65.0 db 57.7 61.2 64.7 db 340 315 pin 15 (mtg) = 3.15v measure the output level, applying a time constant to pin 9 (rfagctc). 410 380 420 480 490 mvpp mvpp mvpp rec amplifier frequency response 1ch 2ch 29 ton1 21 see the measurement method. 22 see the measurement method. ramp rising slope 1 1ch 2ch 30 toff ramp falling slope 1ch 2ch 1ch 2ch 1ch 2ch g v1 g v2 g p1 g p2 v agc1 v agc2 v agc3 28 33 28 33 10 10 10 200 vpp 200 vpp 224mvpp 56mvpp 896mvpp 300khz 300khz 7mhz 7mhz 7mhz 31 32 33 34 35 36 head amplifier mtout gain head amplifier pcmout gain rfagc standard output rfagc cover-range high rfagc cover-range low ton2 ramp rising slope 2 2 5 0 0 s e c i n p u t o u t p u t h l * l o g i c i s i n v e r t e d i n c h 2 m e a s u r e m e n t . s l o p e : t o f f s l o p e : t o n 1 2 5 0 0 s e c i n p u t o u t p u t h l s l o p e : t o n 2 playback system no. item symbol measurement conditions input condition level measurement method min. typ. max. unit input pin fre- quency control logic measure- ment point, ammeter name
CXA2002r ? 17 no. item symbol measurement conditions input condition level measurement method min. typ. max. unit 37 kdop-on see the measurement method (figure to the right). see the measurement method (figure to the right). g 12 ?5.0 ?2.0 ?.0 db v dropout detection on level 38 kdop-off g 12 ?.5 ?.5 ?.5 dropout detection off level 39 vdop-l g 12 0 0.01 0.2 dropout pulse low level 40 vdop-h g 12 2.9 3.15 3.4 s 1.1 2 dropout pulse high level 41 tdop-on g 12 g 12 dropout on detection time 42 tdop-off dropout off detection time 1 0 k h z 7 m h z a b 2 2 4 m v p - p v d o p - h v d o p - l p i n 1 2 ( d o p ) p i n 1 0 ( r f a g c i n ) a p p l y a t i m e c o n s t a n t t o p i n 9 ( r f a g c t c ) . k d o p - o n = 2 0 l o g k d o p - o f f = 2 0 l o g 2 2 4 a 2 2 4 b 5 0 s 5 k h z t d o p - o n t d o p - o f f p i n 1 2 ( d o p ) 7 m / 2 2 4 m v p - p p i n 1 0 ( r f a g c i n ) input pin fre- quency control logic measure- ment point, ammeter name
CXA2002r ? 18 input condition and operation control logic conditions a b c d e f g h i j k h l l l l l l l l l h l l l l l h l l l l l l h h l l l l l h l l l h l l h h l l h l h l l l l l h l h l l l h l l h l h h h l h h l h h h l l h h h h h l h h h h h x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x o o ch1 ch2 o o o o ch2 ch1 o o x o mute mute hold o o x mute mute hold o x o mute mute hold o o x mute mute hold o video each rec video both rec pcm rec pb after-recording rec pb pcm after-recording v * ? v v * v ? v * v v v * v v v p p v v p v p x x x x x x x x x p p x x p x p x p p x x p x p control logic input condition 18 rp pb 20 both rec 21 rfswp 22 ramp 23 rampcont 47 pcmrec 3 afrec 41 recvideo 38 recpcm 27 rec1out 34 rec2out pb1champ pb2champ 16 pcmout 14 mtout 8 rfagcout dropout detector operation of each section under respective input condition recording playback operation mode control logic truth table after-recording mode rampcont = l : recording bias current rising slope 32 a/ s (typ.) rampcont = h : recording bias current falling slope 17 a/ s (typ.) (description of input conditions) (description of operation mode) h : control logic input voltage 2.3v or above o : operating * : operating with no signal output l : control logic input voltage 0.6v or below x : not operating ? : operating with bias current turned off : indenpendent of h and l v : video signal is selected. mute : signal is muted. p : pcm signal is selected. hold : time constant is kept on hold. ch1 : ch1 signal is output. ch2 : ch2 signal is output.
h e a d r e c v / i r a m p g e n 1 5 d b 4 0 d b v p s w 1 v p s w 2 p c m v i d e o y g c a 1 1 1 1 1 1 2 c g c a l o w g c a l o w g c a r f a g c a g c d e t d o c d e t m t 6 d b 1 2 d b m u t e 2 c h 1 c h m u t e 2 c h 1 c h p c m s w v i d e o s w r e c h e a d 4 0 d b 1 5 d b v / i r a m p g e n r a m p c o n t r a m p r f s w p b o t h r e c r p p b m t q m t f 0 m t g 1 0 0 . 1 1 0 1 0 0 . 1 1 0 a p c m o u t m t o u t r a m p c o n t r a m p r f s w p b o t h r e c r p p b m t q m t f 0 m t g p c m o u t m t o u t r e c 1 c o n t 1 0 0 . 1 1 0 0 a p b 1 i n 5 . 6 0 . 0 1 0 . 0 2 2 3 9 0 0 . 0 2 2 3 9 0 p b 2 i n 5 . 6 0 . 0 1 4 9 4 9 r e c 2 c o n t 1 0 0 . 1 1 0 0 a a i v c c 1 v c c 4 . 7 5 v i v c c 2 v c c e v r 3 . 1 5 v d o p y l e v e l r f a g c i n r f a g c o u t l o w l e v e l y i n c i n a f r e c a f m i n c c o n t v p p c m i n r e c p c m r e c v i d e o v p v t r i n p c m i n a t f i n p c m r e c 4 0 3 9 3 8 3 7 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 6 3 5 3 4 3 1 3 2 3 3 v p p c m i n r e c p c m v p v t r i n r e c v i d e o v r e g g n d i r 1 i r v g 2 p c m i n p c m r e c a t f i n 0 . 0 1 5 1 0 . 1 1 0 0 . 0 1 5 1 1 5 k * 1 8 k * 0 . 1 1 0 5 1 5 1 0 . 0 1 5 1 0 . 0 1 0 . 0 1 5 1 0 . 0 1 5 1 c c o n t a f m i n a f r e c c i n l o w l e v e l y i n y l e v e l r f a g c o u t r f a g c t c r f a g c i n d o c d e t d o p 4 7 0 k 4 7 0 0 p 1 0 0 . 1 0 . 0 1 5 1 1 1 v c c 2 r e c 2 c o n t 5 1 * r e c 2 o u t p b 2 i n p b d u m p 2 p b d u m p 1 g n d 1 p b 1 i n r e c 1 o u t r e c 1 c o n t v c c 1 g n d 2 s i g n a l o u t p u t p i n s i g n a l i n p u t p i n e v r a d j u s t i n g p i n c o n t r o l l o g i c p i n r e s i s t a n c e a c c u r a c y 1 % * v c c v c c e v r 0 . 0 1 r f a g c t c i b 1 i b 2 p c m v i d e o 5 1 * CXA2002r ? 19 electrical characteristics measurement circuit
CXA2002r ? 20 h e a d r e c v / i r a m p g e n 1 5 d b 4 0 d b v p s w 1 v p s w 2 p c m v i d e o y g c a 1 1 1 1 1 1 2 c g c a l o w g c a l o w g c a r f a g c a g c d e t d o c d e t m t 6 d b 1 2 d b m u t e 2 c h 1 c h m u t e 2 c h 1 c h p c m s w v i d e o s w r e c h e a d 4 0 d b 1 5 d b v / i r a m p g e n r a m p c o n t r a m p r f s w p b o t h r e c r p p b m t q m t f 0 m t g p c m o u t m t o u t v p p c m i n r e c p c m v p v t r i n r e c v i d e o v r e g g n d i r 1 i r v g 2 p c m i n p c m r e c a t f i n c c o n t a f m i n a f r e c c i n l o w l e v e l y i n y l e v e l r f a g c o u t r f a g c t c r f a g c i n d o c d e t d o p v c c 2 r e c 2 c o n t r e c 2 o u t p b 2 i n p b d u m p 2 p b d u m p 1 g n d 1 p b 1 i n r e c 1 o u t r e c 1 c o n t v c c 1 g n d 2 v c c v c c e v r 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 6 3 5 3 4 3 1 3 2 3 3 4 0 3 9 3 8 3 7 4 1 4 2 4 3 4 4 4 6 4 7 4 8 r e c 2 c o n t r e c 1 c o n t r a m p c o n t r a m p r f s w p b o t h r e c r p p b e v r l o g i c a f m t r a p a t f t r a p c t r a p r f e q p b c r f p b r f p c m o u t r f a g c o u t r f v c c 1 r f v c c 2 d o p m t q m t f 0 m t g y l e v e l l o w l e v e l c c o n t y i n c i n a f m i n a t f i n p c m i n s i g n a l o u t e v r s i g n a l i n l o g i c a f r e c p c m r e c r f g n d c h 1 h e a d 1 0 0 0 . 1 1 0 0 . 0 1 0 . 0 2 2 3 9 0 0 . 0 2 2 3 9 0 0 . 0 1 c h 2 h e a d 1 0 0 0 . 1 1 0 0 . 1 1 0 0 . 0 1 0 . 0 1 1 5 k 1 8 k 0 . 1 1 0 0 . 0 1 0 . 0 1 4 5 0 . 0 1 0 . 0 1 4 7 0 0 p 4 7 0 k 1 0 0 1 0 0 . 1 p c m v i d e o application circuit application circuits shown are typical examples illustrating the operation of the devices. sony cannot assume responsibility fo r any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same .
CXA2002r ? 21 description of operation y, chroma, afm, atf and pcm signals are input at specified levels so that they are mixed internally to achive an appropriate current value at the head. the video path signal (y + chroma + afm + atf) is output to pin 41 (recvideo) and the pcm path signal (pcm + atf) to pin 38 (recpcm). the y level is evr-adjusted at pin 8 (ylevel) and the low band (chroma, afm, atf) level at pin 5 (lowlevel). the low-band levels of the video path and the pcm path are interlocked in adjustment. the video path signal and the pcm path signal, which underwent recording level adjustment, are switched at a correct timing, then converted to a current to drive the head. a feedback dumping circuit is incorporated to inhibit head resonance, and the peaking can be adjusted by evr at pin 26 (rec1cont), pin 35 (rec2cont). during recording, the output capacitance is about 12pf including that of the head amplifier. the playback signal from the head is amplified with low noise and high gain. a feedback dumping circuit is incorporated to inhibit head resonance, and the peaking can be adjusted by external resistors connected to pin 30 (pbdump1), pin 31 (pbdump2). during playback, the input capacitance is about 20pf including that of the recording amplifier. this section switches the playback signals of ch1 and ch2 at the correct timing and outputs the playback video signal to pin 14 (mtout) and the playback pcm signal to pin 16 (pcmout). in the pcm after-recording mode, both playback video signal and playback pcm signal are muted during the pcm recording period. the middle tune circuit corrects the frequency response of the playback video signal. the center frequency can be adjusted by evr at pin 17 (mtf0), q at pin 24 (mtq) and the boost at pin 15 (mtg). the figure to the right shows the center condition that sets f 0 = 8mhz, q = 2.5 and the boost = 6db. each control characteristics shown in "example of representative characteristics" is obtained when two of them are fixed to the center condition. this circuit inputs the playback y signal separated from the playback video signal using an external circuit and outputs it at a constant level of 410mvp-p. in the pcm after-recording mode, rfagc gain is kept unchanged during pcm recording period. a dropout is detected in the playback y signal, and a dropout pulse is output. the detection level is optimized using 224mvp-p input as a reference. if necessary, the detection level can be adjusted by inputting a dc voltage to pin 11 (docdet). to make this adjustment, input a voltahe proportional to the output voltage of pin 39 (vreg). b o o s t a m o u n t = 6 d b g a i n 3 d b f 1 f 2 c e n t e r f r e q u e n c y f 0 = 8 m h z q = f 0 / ( f 2 f 1 ) = 2 . 5 f r e q u e n c y
CXA2002r ? 22 this ic exercises power-saving control of circuit blocks which are not in immediate need for operation. the ic also incorporates a logic circuit for controlling a number of sws which change inputs and outputs at complicated timing. the combinations of input and output in the basic operation are shown in the "control logic truth table". vg2 2.45v and vreg 4.15v are generated as a reference voltages used in the ic. vg2 cannot be used outside the ic. vreg cannot also be used outside the ic except for adjusting the dropout detection level at pin 11 (docdet). notes on operation 1. this ic is characterized by high-voltage gain (about 61db in the playback system). pay attention to the following when using the ic. 1) use reinforced power supply and ground lines. decouple the power supply pin with a coil and a capacitor. connect the decoupling capacitor as close to the pin as possible. 2) use of a regulator power supply is recommended. 3) connecting a capacitive load to the output may cause oscillation. 4) take particular care not to make capacitive coupling between the head amplifier input and the playback output. also be careful not to make capacitive coupling between the recording input and the recording amplifier output. 5) use of decoupling capacitors is recommended between the following dc voltage input pins and gnd. when the control voltage source is at high impedance, aggravation of cross talk or oscillation is feared to occur. pin 1 (ccont), pin 5 (lowlevel), pin 7 (ylevel) pin 9 (rfagctc) [not when time constant is connected], pin 11 (docdet) pin 17 (mtf0), pin 24 (mtq), pin 26 (rec1cont) pin 35 (rec2cont) 6) when a decoupling capacitor is necessary for other pins (not power supply pin), it is recommended to connect each decoupling capacitor as close as to the pin as possible. 2. when pin 13 (evr vcc) is used for 5v system (4.75 ), the voltage of pin 19 (vcc) should be equal to or larger than that of pin 13 (evr vcc). 3. the voltage input to the evr adjusting pin should be proportional to the evr vcc voltage. control the input voltage in the range from 0v to 3.15v when evr vcc = 3.15v. for evr adjustment at pin 26 (rec1cont) and pin 35 (rec2cont), control the input voltage in the range from 1.8v to 4.75v when vcc = 4.75v, in proportion to the supply voltage vcc; at pin 9 (rfagctc), control the input voltage in the range from 2.5v to 4.75v. +0.5v ?.25v
CXA2002r ? 23 example of representative characteristics y g c a g a i n c o n t r o l p i n 7 ( y l e v e l ) v o l t a g e [ v ] 1 . 0 2 . 0 3 . 0 p i n 6 ( y i n ) ? p i n 4 1 ( r e c v i d e o ) g a i n [ d b ] 2 0 0 5 1 0 1 5 v c c = 4 . 7 5 v e v r v c c = 3 . 1 5 v l o w g c a ( v i d e o p a t h ) g a i n c o n t r o l p i n 5 ( l o w l e v e l ) v o l t a g e [ v ] 1 . 0 2 . 0 3 . 0 3 0 1 0 1 5 2 0 2 5 p i n 4 8 ( a t f i n ) ? p i n 4 1 ( r e c v i d e o ) g a i n [ d b ] p i n 2 ( a f m i n ) ? p i n 4 1 ( r e c v i d e o ) g a i n [ d b ] v c c = 4 . 7 5 v e v r v c c = 3 . 1 5 v l o w g c a ( p c m p a t h ) g a i n c o n t r o l p i n 5 ( l o w l e v e l ) v o l t a g e [ v ] 1 . 0 2 . 0 3 . 0 p i n 4 8 ( a t f i n ) ? p i n 3 8 ( r e c p c m ) g a i n [ d b ] 3 0 1 0 1 5 2 0 2 5 v c c = 4 . 7 5 v e v r v c c = 3 . 1 5 v c g c a g a i n c o n t r o l p i n 1 ( c c o n t ) v o l t a g e [ v ] 1 . 0 2 . 0 3 . 0 p i n 4 ( c i n ) ? p i n 4 1 ( r e c v i d e o ) g a i n [ d b ] 1 0 1 5 2 0 2 5 v c c = 4 . 7 5 v e v r v c c = 3 . 1 5 v
CXA2002r ? 24 m i d d l e t u n e f o c o n t r o l p i n 1 7 ( m t f 0 ) v o l t a g e [ v ] 1 . 0 2 . 0 3 . 0 c e n t e r f r e q u e n c y f o [ m h z ] 5 1 5 1 0 v c c = 4 . 7 5 v e v r v c c = 3 . 1 5 v m i d d l e t u n e q c o n t r o l p i n 2 4 ( m t q ) v o l t a g e [ v ] 1 . 0 2 . 0 3 . 0 q 1 6 4 v c c = 4 . 7 5 v e v r v c c = 3 . 1 5 v 2 5 3 m i d d l e t u n e b o o s t c o n t r o l p i n 1 5 ( m t g ) v o l t a g e [ v ] 1 . 0 2 . 0 3 . 0 b o o s t [ d b ] 5 1 5 1 0 v c c = 4 . 7 5 v e v r v c c = 3 . 1 5 v 0
CXA2002r ? 25 package outline unit : mm s o n y c o d e e i a j c o d e j e d e c c o d e p a c k a g e m a t e r i a l l e a d t r e a t m e n t l e a d m a t e r i a l p a c k a g e m a s s e p o x y r e s i n p l a t i n g 4 2 / c o p p e r a l l o y p a c k a g e s t r u c t u r e 4 8 p i n l q f p ( p l a s t i c ) 9 . 0 0 . 2 * 7 . 0 0 . 1 1 1 2 1 3 2 4 2 5 3 6 3 7 4 8 ( 0 . 2 2 ) 0 . 1 8 0 . 0 3 + 0 . 0 8 0 . 2 g l q f p - 4 8 p - l 0 1 l q f p 0 4 8 - p - 0 7 0 7 ( 8 . 0 ) 0 . 5 0 . 2 0 . 1 2 7 0 . 0 2 + 0 . 0 5 a 1 . 5 0 . 1 + 0 . 2 0 . 1 s o l d e r / p a l l a d i u m n o t e : d i m e n s i o n * d o e s n o t i n c l u d e m o l d p r o t r u s i o n . 0 . 1 0 . 1 0 . 5 0 . 2 0 t o 1 0 d e t a i l a 0 . 1 3 m 0 . 5 s s b d e t a i l b : s o l d e r ( 0 . 1 8 ) ( 0 . 1 2 7 ) d e t a i l b : p a l l a d i u m 0 . 1 2 7 0 . 0 4 0 . 1 8 0 . 0 3 + 0 . 0 8 0 . 1 2 7 0 . 0 2 + 0 . 0 5 0 . 1 8 0 . 0 3

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