1/10 n internally frequency compensated n large dc voltage gain : 100db n wide bandwidth (unity gain) : 1.1mhz (temperature compensated) n very low supply current/op (500a) n low input bias current : 20na (temperature compensated) n low input offset current : 2na n input common-mode voltage range includes ground n differential input voltage range equal to the power supply voltage n large output voltage swing 0v to (v cc - 1.5v) n esd internal protection : 2kv description this circuit consists of two independent, high gain, internally frequency compensated which were de- signed specifically for automotive and industrial control system. it operates from a single power supply over a wide range of voltages. the low power supply drain is independent of the magni- tude of the power supply voltage. application areas include transducer amplifiers, dc gain blocks and all the conventional op-amp circuits which now can be more easily implement- ed in single power supply ssystems. for example, these circuits can be directly supplied with off the standard +5v which is used in logic systems and will easily provide the required interface electron- ics without requiring any additional power supply. in the linear mode the input common-mode volt- age range includes ground and the output voltage can also swing to groung, even though operated from only a single power supply voltage. order code n = dual in line package (dip) d = small outline package (so) - also available in tape & reel (dt) p = thin shrink small outline package (tssop) - only available in tape & reel (pt) pin connections (top view) part number temperature range package ndp lm2904w -40c, +125c n dip8 (plastic package) d so8 (plastic micropackage) p tssop8 (thin shrink small outline package) 1 2 3 4 5 6 7 8 - + - + lm2904w low power dual operational amplifiers september 2003
lm2904w 2/10 schematic diagram (1/2 lm2904w) absolute maximum ratings operating conditions symbol parameter value unit v cc supply voltage +32 v v id differential input voltage -0.3v to vcc + 0.3 v v i input voltage -0.3v to vcc + 0.3 v esd human body model 3) 2kv output short-circuit duration 1) infinite s p tot power dissipation 500 mw i in input current 2) 50 ma t oper operating free-air temperature range -40 to +125 c t stg storage temperature range -65 to +150 c 1. short-circuits from the output to v cc can cause excessive heating if vcc + > 15v. the maximum output current is approximately 40ma, independent of the magnitude of v cc . destructive dissipation can result from simultaneous short-circuits on all amplifiers. 2. this input current only exists when the voltage at any of the input leads is driven negative. it is due to the collector-base junction of the input pnp transistor becoming forward biased and thereby acting as input diodes clamps. in addition to this diode action, there is also npn parasitic action on the ic chip. this transistor action can cause the output voltages of the op-amps to go to the v cc voltage level (or to ground for a large overdrive) for the time duration than an input is driven negative. this is not destructive and normal output will set up again for input voltage higher than -0.3v 3) human body model, 100pf discharged through a 1.5k w resistor, into pin to pin of device. symbol parameter value unit v cc + supply voltage 3 to 30 v v icm common mode input voltage range v cc + - 1.5 v
lm2904w 3/10 electrical characteristics v cc + = 5v, v cc - = ground, v o = 1.4v, t amb = 25c (unless otherwise specified) symbol parameter min. typ. max. unit v io input offset voltage 1) t amb = 25c t min t amb t max . 27 9 mv i io input offset current t amb = 25c t min t amb t max. 230 40 na i ib input bias current 2) t amb = 25c t min t amb t max. 20 150 200 na a vd large signal voltage gain v cc + = +15v,r l =2k w , v o = 1.4v to 11.4v t amb = 25c t min t amb t max. 50 25 100 v/mv svr supply voltage rejection ratio (r s 10k w ) t amb = 25c t min t amb t max. 65 65 100 db i cc supply current, all amp, no load t amb = 25c v cc = +5v t min t amb t max. v cc = +30v 0.7 1.2 2 ma v icm input common mode voltage range (v cc = +30v) 3) t amb = 25c t min t amb t max. 0 0 v cc + -1.5 v cc + -2 v cmr common-mode rejection ratio (r s = 10k w ) t amb = 25c t min t amb t max. 70 60 85 db i source output short-circuit current v cc = +15v, v o = +2v, v id = +1v 20 40 60 ma i sink output sink current v o = 2v v cc = +5v v o = +0.2v v cc = +15v 10 12 20 50 ma v opp output voltage swing (r l = 2k w t amb = 25c t min t amb t max 0 0 v cc + -1.5 v cc + -2 v v oh high level output voltage (v cc + 30v) t amb = +25c r l = 2k w t min t amb t max. t amb = +25c r l = 10k w t min t amb t max. 26 26 27 27 27 28 v v ol low level output voltage (r l = 10k w ) t amb = +25c t min t amb t max 520 20 mv sr slew rate v cc = 15v, vi = 0.5 to 3v, r l = 2k w , c l = 100pf, unity gain 0.3 0.6 v/s gbp gain bandwidth product f = 100khz v cc = 30v,v in = 10mv, r l = 2k w , c l = 100pf 0.7 1.1 mhz
lm2904w 4/10 thd total harmonic distortion f = 1khz, a v = 20db, r l = 2k w , v o = 2vpp, c l = 100pf, v cc = 30v 0.02 % dv io input offset voltage drift 7 30 v/c di io input offset current drift 10 300 pa/c v o1 /v o2 channel separation 4) 1khz f 20khz 120 db 1. v o = 1.4v, r s = 0 w , 5v < v cc + < 30v, 0v < v ic < v cc + - 1.5v 2. the direction of the input current is out of the ic. this current is essentially constant, independent of the state of the ou tput, so no loading charge change exists on the input lines 3. the input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3v. the uppe r end of the common-mode voltage range is v cc + C1.5v, but either or both inputs can go to +32v without damage. 4. due to the proximity of external components insure that coupling is not originating via stray capacitance between these exter nal parts. this typically can be detected as this type of capacitance increases at higher frequences. symbol parameter min. typ. max. unit voltage gain (db) open loop frequency response (note 3) 1.0 10 100 1k 10k 100k 1m 10m v cc = +10 to + 15v & frequency (hz) 10m w v i v cc /2 v cc = 30v & 0.1 m f v cc v o - + -55c t amb +125c 140 120 100 80 60 40 20 0 -55c t amb +125c large signal frequency response frequency (hz) 1k 10k 100k 1m output swing (vpp) +7v 2k w 1k w 100k w +15v vo - + v i 20 15 10 5 0 input voltage (v) output voltage (v) volage follower pulse response 010203040 t i me ( m s ) rl 2 k w vcc = +15v 4 3 2 1 0 3 2 1 output characteristics output sink current ( m a) 0,001 0,01 0,1 1 10 100 output voltage (v) vcc = +5v vcc = +15v vcc = +30v - i o v o t amb =+25c v cc /2 v cc + 10 1 0.1 0.01
lm2904w 5/10 output voltage (mv) voltage follower pulsse response (small signal) 0 1 2 3 4 5 6 7 8 input t amb = +25c v cc = 30 v output e o e l 50pf + - time ( m s) 500 450 400 350 300 250 output voltage referenced to v cc + (v) output characteristics 0,01 0,1 1 10 100 0,001 independent of v cc t amb = +25c + - v cc v o i o v cc /2 output source current (ma) 8 7 6 5 4 3 2 1 input current (ma) input current (note 1) -55 -35 -15 5 25 45 65 85 105 12 5 v i = 0 v v cc = +30 v v cc = +15 v v cc = +5 v temperature (c) 90 80 70 60 50 40 30 20 10 0 output current (ma) current limiting (note 1) - + i o temperature (c) 90 80 70 60 50 40 30 20 10 0 -55 -35 -15 5 25 45 65 85 105 125 input voltage (v) input voltage range 0 5 10 15 power supply voltage (v) ngative positive 15 10 5 supply current (ma) supply current 0102030 t amb = -55c v cc ma i d - + t amb = 0c to +125c positive supply voltage (v) 4 3 2 1 010203040 positive supply voltage (v) voltage gain (db) 160 120 80 40 l r = 20k w l r=2k w 0 10 20 30 positive supply voltage (v) input current (na) 100 75 50 25 amb t = +25c
lm2904w 6/10 typical single - supply applications ac coupled inverting amplifier ac coupled non-inverting amplifier non-inverting dc gain 0102030 positive supply voltage (v) voltage gain (db) 160 120 80 40 l r = 20k w l r=2k w -55-35-15 5 25 45 65 85 105 12 5 temperature (c) gain bandwidth product (mhz) cc v = 15v 1.5 1.35 1.2 1.05 0.9 0.75 0.6 0.45 0.3 0.15 0 -55-35-15 5 25 45 65 85 105 125 temperature (c) power supply rejection ratio (db) svr 115 110 105 100 95 90 85 80 75 70 65 60 -55-35-15 5 25 45 65 85 105 125 temperature (c) common mode rejection ratio (db) 115 110 105 100 95 90 85 80 75 70 65 60 1/2 lm2904 ~ 0 2v pp r 10k w l c o e o r 6.2k w b r 100k w f r1 10k w c i e i v cc r2 100k w c1 10 m f r3 100k w a=- r r1 v f (as shown a = -10) v 1/2 lm2904 ~ 0 2v pp r 10k w l c o e o r 6.2k w b c1 0.1 m f e i v cc (as shown a = 11) v a=1+ r2 r1 v r1 100k w r2 1m w c i r3 1m w r4 100k w r5 100k w c2 10 m f r1 10k w r2 1m w 1/2 lm2904 10k w e i e o +5v e o (v) (mv) 0 a v =1+ r2 r1 (as shown = 101) a v
lm2904w 7/10 dc summing amplifier high input z, dc differential amplifier using symmetrical amplifiers to reduce input current high input z adjustable gain dc instrumentation amplifier low drift peak detector activer badpass filter 1/2 lm2904 e o e 4 e 3 e 2 e 1 100k w 100k w 100k w 100k w 100k w 100k w eo = e1 + e2 - e3 - e4 where (e1 + e2) (e3 + e4) to keep eo 0v 3 3 + 1/2 lm2904 r1 100k w r2 100k w r4 100k w r3 100k w +v2 v1 v o 1/2 lm2904 if r1 = r5 and r3 = r4 = r6 = r7 eo = [ 1 + ] (e2 - e1) as shown eo = 101 (e2 - e1) 2r1 r2 i b 2n 929 0.001 m f i b 3m w i b e o i i e i i b i b input current compensation 1.5m w 1/2 lm2904 1/2 lm2904 1/2 lm2904 i b 2n 929 0.001 m f i b 3r 3m w i b input current compensation e o i b e i z o z i c 1 m f 2i b r 1m w 2i b 1/2 lm2904 1/2 lm2904 1/2 lm2904 r8 100k w c3 10 m f r7 100k w r5 470k w c1 330pf v o v cc r6 470k w c2 330pf r4 10m w r1 100k w r2 100k w +v1 r3 100k w 1/2 lm2904 1/2 lm2904 fo = 1khz q = 50 av = 100 (40db) r3 100k w e o r1 100k w e 1 1/2 lm2904 r7 100k w r6 100k w r5 100k w e 2 r2 2k w gain adjust r4 100k w 1/2 lm2904 1/2 lm2904 if r1 = r5 and r3 = r4 = r6 = r7 eo = [ 1 + ] (e2 - e1) as shown eo = 101 (e2 - e1) 2r1 r2
lm2904w 8/10 package mechanical data 8 pins - plastic dip dim. millimeters inches min. typ. max. min. typ. max. a 3.32 0.131 a1 0.51 0.020 b 1.15 1.65 0.045 0.065 b 0.356 0.55 0.014 0.022 b1 0.204 0.304 0.008 0.012 d 10.92 0.430 e 7.95 9.75 0.313 0.384 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 f 6.6 0260 i 5.08 0.200 l 3.18 3.81 0.125 0.150 z 1.52 0.060
lm2904w 9/10 package mechanical data 8 pins - plastic micropackage (so) dim. millimeters inches min. typ. max. min. typ. max. a 1.75 0.069 a1 0.1 0.25 0.004 0.010 a2 1.65 0.065 a3 0.65 0.85 0.026 0.033 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 c 0.25 0.5 0.010 0.020 c1 45 (typ.) d 4.8 5.0 0.189 0.197 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 f 3.8 4.0 0.150 0.157 l 0.4 1.27 0.016 0.050 m 0.6 0.024 s 8 (max.)
lm2904w 10/10 package mechanical data 8 pins -thin shrink small outline package dim. millimeters inches min. typ. max. min. typ. max. a 1.20 0.05 a1 0.05 0.15 0.01 0.006 a2 0.80 1.00 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.15 c 0.09 0.20 0.003 0.012 d 2.90 3.00 3.10 0.114 0.118 0.122 e 6.40 0.252 e1 4.30 4.40 4.50 0.169 0.173 0.177 e 0.65 0.025 k 0 8 0 8 l 0.50 0.60 0.75 0.09 0.0236 0.030 l 0.45 0.600 0.75 0.018 0.024 0.030 l1 1.000 0.039 c l 14 8 5 l1 c 0.25mm .010 inch gage plane e1 k l l1 e seating plane a a2 d a1 b 5 8 4 1 pin 1 identification e information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specificati ons mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics all other names are the property of their respective owners. ? 2003 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech repubic - finland - france - germany hong kong - india - israel - italy - japan - malaysia - malta - morocco - singapore - spain sweden - switzerland - united kingdom - united states http://www.st.com
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