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low power dual operational amplifiers ? . internally frequency compensated . large dc voltage gain : 100db . wide bandwidth (unity gain) : 1.1mhz (temperature compensated) . very low supply current/op (500 m a) - essentially independent of supply voltage . low input bias current : 20na (temperature compensated) . low input offset current : 2na . input common-mode voltage range includes ground . differential input voltage range equal to the power supply voltage . large output voltage swing 0v to (v cc 1.5v) description this circuit consists of two independent,high gain, internally frequency compensated which were designed specifically for automotive and industrial control system. it operates from a single power sup- ply over a wide range of voltages. the low power supply drain is independentof the magnitude 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 implemented in single power supply systems. 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 electronics without requiring any additional power supply. in the linear mode the input common-mode voltage range includes ground and the output voltage can also swing to ground, even though operated from only a single power supply voltage. n dip8 (plastic package) order codes part number temperature range package ndp LM2904 -40 o c, +125 o c ??? example : LM2904d d so8 (plastic micropackage) LM2904 june 1998 1 2 3 45 6 7 8 - + - + 1 - output 1 2 - inverting input 1 3 - non-inverting input 1 4-v cc - 5 - non-inverting input 2 6 - inverting input 2 7 - ouput 2 8-v cc + pin connections (top view) p tssop8 (thin shrink small outline package) preview 1/12
absolute maximum ratings symbol parameter LM2904 unit v cc supply voltage +32 v v i input voltage 0.3 to +32 v v id differential input voltage +32 v output short-circuit duration - (note 2) p tot power dissipation 500 mw i in input current - (note 1) 50 ma t oper operating free-air temperature range -40 to +125 o c t stg storage temperature range 65 to +150 o c 6 m a 4 m a 100 m a q2 q3 q4 q1 inve rting input non-inve rting input q8 q9 q10 q11 q12 50 m a q13 output q7 q6 q5 r sc v cc c c gnd schematic diagram (1/2 LM2904) LM2904 2/12
electrical characteristics v cc + = +5v, v cc = ground, v o = 1.4v, t amb =25 o c (unless otherwise specified) symbol parameter min. typ. max. unit v io input offset voltage - (note 3) t amb =25 o c t min. t amb t max . 27 9 mv i io input offset current t amb =25 o c t min. t amb t max . 230 40 na i ib input bias current - (note 4) t amb =25 o c 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 =25 o c t min. t amb t max . 50 25 100 v/mv svr supply voltage rejection ratio (r s = 10k w ) (v cc + = 5 to 30v) t amb =25 o c t min. t amb t max . 65 65 100 db i cc supply current, all amp, no load v cc = +5v, t min. t amb t max . v cc = +30v, t min. t amb t max . 0.7 1.2 2 ma v icm input common mode voltage range (v cc = +30v) - (note 6) t amb =25 o c 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 =25 o c t min. t amb t max . 70 60 85 db i source output source current (v cc = +15v, v o = 2v, v id = +1v) 20 40 60 ma i sink output current sink (v id = -1v) v cc = +15v, v o =2v v cc = +15v, v o = +0.2v 10 12 20 50 ma m a v opp output voltage swing (r l =2k w ) t amb =25 o c 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 =25 o cr l =2k w t min . t amb t max . t amb =25 o cr 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 =25 o c t min . t amb t max. 520 20 mv sr slew rate (v cc = 15v, v i = 0.5 to 3v, r l =2k w ,c l = 100pf, unity gain) 0.3 0.6 v/ m s gbp gain bandwidth product (v cc = 30v, f = 100khz, v in = 10mv, r l =2k w ,c l = 100pf) 0.7 1.1 mhz thd total harmonic distortion (f = 1khz, a v = 20db, r l =2k w ,v cc = 30v, c l = 100pf, v o =2 pp ) 0.02 % LM2904 3/12
electrical characteristics (continued) symbol parameter min. typ. max unit dv io input offset voltage drift 7 30 m a/ o c di io input offset current drift 10 300 pa/ o c v o1 /v o2 channel separation (note 5) 1khz f 20khz 120 db n otes : 1. this input current only exist when the voltage at any of the input leads is driven negative. it is due to the collec- tor-base junction of the input pnp transistor becoming forward biased and thereby acting as input diode 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 that an input is driven negative. this is not destructive and normal output will set up again for input voltage higher than 0.3v. 2. short-circuits from the output to v cc can cause excessive heating if v cc + > 15v. the maximum output current is approximatively 40ma independent of the magnitude of v cc . destructive dissipation can result from simultaneous short-circuits on all amplifi ers. 3. v o = 1.4v, r s =0 w ,5vLM2904 4/12
output voltage referenced to v cc + (v) outp ut characteristics 0,01 0,1 1 10 100 0,001 inde pendent of v cc t amb =+25 c + - v cc v o i o v cc /2 outp ut source current (ma) 8 7 6 5 4 3 2 1 output voltage (mv) voltage follower p ulss e res ponse (small s ignal) 012345678 inp ut t amb =+25 c v cc =30v output e o e l 50pf + - time ( m s) 500 450 400 350 300 250 input current (ma) input current (note 1) -55 -35 -15 5 25 45 65 85 105 125 v i =0v v cc =+30v v cc =+15v v cc =+5v 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 supply current (ma) s upp ly current 010 2030 t amb =-55 c v cc ma i d - + t amb = 0 c to +125 c pos itive supp ly voltage (v) 4 3 2 1 input voltage (v) input voltage range 0 5 10 15 power s upp ly voltage (v) nga tive p os itive 15 10 5 LM2904 5/12
010203040 p os itive s up p ly voltage (v) voltage gain (db) 160 120 80 40 l r=20k w l r=2k w -55-35-15 5 25 45 65 85 105 125 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 0102030 p os itive s up p ly voltage (v) input current (na) 100 75 50 25 amb t=+25 c 0102030 p os itive s up p ly voltage (v) voltage gain (db) 160 120 80 40 l r = 20k w l r=2k w -55-35-15 5 25 45 65 85 105 125 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 LM2904 6/12
typical applications (single supply voltage) v cc =+5v dc 1/2 lm290 4 ~ 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 ac coupled non-inverting amplifier 1/2 lm29 04 ~ 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 ac coupled inverting amplifier 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 non-inverting dc amplifier 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 e o =e 1 +e 2 -e 3 -e 4 where (e 1 +e 2 ) (e 3 +e 4 ) to keep e o 0v dc summing amplifier LM2904 7/12
1/2 lm29 04 r1 100k w r2 100k w r4 100k w r3 100k w +v2 +v1 v o 1/2 lm29 04 if r 1 =r 5 and r 3 =r 4 =r 6 =r 7 e o = [1 + 2r 1 r 2 ] ( e 2 - e 1 ) as shown e o =101(e 2 -e 1 ). high input z, dc differential amplifier 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 curre nt compensa tion 1.5m w 1/2 LM2904 1/2 LM2904 using symmetrical amplifiers to reduce input current 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 g ain ad jus t r4 100k w 1/2 LM2904 1/2 LM2904 if r 1 =r 5 and r 3 =r 4 =r 6 =r 7 e o = [1 + 2r 1 r 2 ] ( e 2 - e 1 ) as shown e o =101(e 2 -e 1 ) high input z adjustable gain dc instrumentation amplifier 1/2 LM2904 i b 2n 929 0.001 m f i b 3r 3m w i b inp ut curre nt c ompe ns a tion 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 low drift peak detector LM2904 8/12
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 lm29 0 4 f o = 1khz q= 50 a v = 100 (40db) active band-pass filter LM2904 9/12
pm-dip8.eps package mechanical data 8 pins - plastic dip dimensions 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 dip8.tbl LM2904 10/12
pm-so8.eps package mechanical data 8 pins - plastic micropackage (so) dimensions 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 o (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 s8 o (max.) so8.tbl LM2904 11/12
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 k0 o 8 o 0 o 8 o l 0.50 0.60 0.75 0.09 0.0236 0.030 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 from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifi- cations mentioned in this publication are subject to change without notice. this publication supersedes and replaces all infor- mation previously supplied. stmicroelectronics products are not authorized for use as critical components in life support de- vices or systems without express written approval of stmicroelectronics. ? the st log o is a trademark of stmicroelectronics ? 1998 stmicroelectronics printed in italy all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - france - germany - italy - japan - korea - malaysia - malta - mexico - morocco the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdo m - u.s.a. order code : preview LM2904 12/12

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