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LM2902
LOW POWER QUAD OPERATIONAL AMPLIFIERS
. . . . .
LARGE VOLTAGE GAIN : 100dB VERY LOW SUPPLY CURRENT/AMPLI : 375µA LOW INPUT BIAS CURRENT : 20nA LOW INPUT OFFSET CURRENT : 2nA WIDE POWER SUPPLY RANGE : SINGLE SUPPLY : +3V TO +30V DUAL SUPPLIES : ±1.5V TO ±15V
N DIP14 (Plastic Package)
D SO14 (Plastic Micropackage)
DESCRIPTION This circuit consists of four independent, high gain, internally frequency compensated operational amplifiers which were designed specifically for automotive and industrial control systems. It operates from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. PIN CONNECTIONS (top view)
ORDER CODES
Part Number LM2902 Temperature Range -40oC, +125oC Package
2902-01.TBL
N ·
D ·
Example : LM2902D
Outp ut 1 1
14
Ou tp ut 4
Inv erti ng Input 1 2
N on-i nv er ti ng Inp ut 1 3 V CC + 4
+
+
13
12 11
Inverting Input 4
Non- inver ting In put 4 VCC -
Non-invert ing In pu t 2 5
Invertin g Inp ut 2 6
+
+
10
9
Non-inve rt ing In pu t 3
Invertin g Inpu t 3
2902-01.EPS
-
-
O utput 2 7
8
O utput 3
November 1995
1/11
LM2902
SCHEMATIC DIAGRAM (1/4 LM2902)
V CC
6µA
4µA CC
100µA
Q5 Q6
Inverting input
Q2 Q1
Q3 Q4 Q11 Output Q13 Q10 Q12 Q7 R SC
Non-inverting input
Q8
Q9 50µA GND
ABSOLUTE MAXIMUM RATINGS
Symbol Vcc Vi Vid Ptot Iin Toper Tstg Parameter Supply Voltage Input Voltage Differential Input Voltage Power Dissipation N Suffix D Suffix Value ±16 or 32 -0.3 to +32 +32 500 400 Infinite 50 -40 to +125 -65 to +150 mA
o o
Unit V V V mW mW
Output Short-circuit Duration - (note 1) Input Current (note 6) Operating Free Air Temperature Range Storage Temperature Range
C C
2/11
2902-02.TBL
2902-02.EPS
LM2902
ELECTRICAL CHARACTERISTICS VCC+ = +5V, VCC = Ground, VO = 1.4V, Tamb = +25oC (unless otherwise specified)
Symbol Vio Parameter Input Offset Voltage (note 3) o Tamb = +25 C Tmin. Tamb Tmax. Input Offset Current Tamb = +25oC Tmin. Tamb Tmax. Input Bias Current (note 2) o Tamb = +25 C Tmin. Tamb Tmax. Large Signal Voltage Gain + (VCC = +15V, RL = 2k, VO = 1.4V to 11.4V) o Tamb = +25 C Tmin. Tamb Tmax. Supply Voltage Rejection Ratio (RS 10k) + (VCC = 5V to 30V) o Tamb = +25 C Tmin. Tamb Tmax. Supply Current, all Amp, no load o VCC Tamb = +25 C VCC VCC Tmin. Tamb Tmax. VCC = = = = +5V +30V +5V +30V Min. Typ. 2 Max. 7 9 nA 2 30 40 nA 20 150 200 V/mV 50 25 100 dB 65 65 110 mA 0.7 1.5 0.8 1.5 1.2 3 1.2 3 V 0 0 70 60 20 10 12 80 mA 40 20 50 60 mA µA
2902-03.TBL
Unit mV
Iio
Iib
Avd
SVR
ICC
Vicm
Input Common Mode Voltage Range (VCC = +30V) - (note 4) Tamb = +25oC Tmin. Tamb Tmax. Common-mode Rejection Ratio (RS 10k) o Tamb = +25 C Tmin. Tamb Tmax Output Short-circuit Current (V id = +1V) VCC = +15V, V o = +2V Output Sink Current (Vid = -1V) VCC = +15V, V o = +2V VCC = +15V, V o = +0.2V
VCC -1.5 VCC -2 dB
CMR
Io Isink
3/11
LM2902
ELECTRICAL CHARACTERISTICS (continued)
Symbol VOH Parameter High Level Output Voltage (VCC = +30V) o R L = 2k Tamb = +25 C Tmin. Tamb Tmax. o R L = 10k Tamb = +25 C Tmin. Tamb Tmax. (VCC = +5V, RL = 2k) o Tamb = +25 C Tmin. Tamb Tmax. Low Level Output Voltage (R L = 10k) Tamb = +25oC Tmin. Tamb Tmax. Slew Rate (VCC = 15V, VI = 0.5 to 3V, R L = 2k, CL = 100pF, Tamb = +25oC, unity gain) Gain Bandwidth Product (VCC = 30V o f = 100kHz, Tamb = +25 C, Vin = 10mV R L = 2k, CL = 100pF) Total Harmonic Distortion (f = 1kHz, AV = 20dB, RL = 2k, VO = 2Vpp o C L = 100pF, Tamb = +25 C, VCC = 30V) Equivalent Input Noise Voltage (f = 1kHz, R s = 100, VCC = 30V) Input Offset Voltage Drift Input Offset Current Drift Channel Separation (note 5) 1kHz f 20kHz Min. 26 26 27 27 3.5 3 mV 5 20 20 V/µs 0.4 MHz 1.3 % 0.015 40 7 10 120 30 200 nV Hz µV/ C dB
2902-04.TBL
Typ. 27 28
Max.
Unit V
VOL
SR
GBP
THD
en DVio DIIO VO1/VO2
Not es :
o
pA/oC
1. Shor t - ci rcui t s f rom t he out put t o VC C can cause excessive heati ng if V C C > 15V. The maximum out put cur rent i s approximatel y 40mA i ndependent of t he magni tude of V C C . Destr uct ive di ssipat i on can resul t f r om si mul t aneous short - ci rcuit on all ampl i fi ers. 2. The di r ect ion of t he i nput curr ent i s out of the IC. T his cur r ent i s essent iall y constant, independent of the stat e of t he out put so no l oadi ng change exi st s on t he input l i nes. 3. V o = 1. 4V , R s = 0, 5V < V C C + < 30V , 0 < V ic < V C C + - 1.5V 4. The i nput common-mode volt age of ei ther i nput si gnal volt age should not be all owed to go negati ve by more t han 0.3V. T he upper end of t he comm on-mode vol tage r ange i s VC C + - 1. 5V, but ei ther or bot h i nputs can go t o +32V w i thout damage. 5. D ue t o t he pr oxi mi ty of exter nal component s insure t hat coupling i s not ori gi nat ing vi a st ray capacit ance bet w een these ext ernal par ts. T hi s t ypi call y can be detect ed as this type of capaci t ance i ncreases at hi gher f requences. 6. Thi s input curr ent onl y exi sts when the volt age at any of the i nput leads i s dri ven negat iv e. I t is due t o t he coll ect or -base junct i on of the input PN P t ransi st or becom ing forw ar d bi ased and thereby acti ng as input diodes clamps. I n addi t i on to thi s di ode acti on, there i s al so N PN parasi ti c act ion on t he I C chi p. t hi s t ransi st or acti on can cause t he output vol t ages of the Op- amps to go t o the V CC vol tage l evel (or t o ground for a l arge over dr i ve) f or t he t i me durati on t han an i nput i s dri ven negat ive. T hi s i s not dest r ucti ve and nor mal out put w i ll set up agai n f or input vol t age higher than - 0. 3V.
4/11
2902-07.EPS
2902-05.EPS
2902-03.EPS
LM2902
5/11
2902-06.EPS 2902-04.EPS
2902-08.EPS
6/11
LM2902
2902-09.EPS
LM2902
2902-10.EPS
TYPICAL SINGLE - SUPPLY APPLICATIONS AC COUPLED INVERTING AMPLIFIER AC COUPLED NON-INVERTING AMPLIFIER
Rf 100k R1 CI 10k
1/4 LM 2902
2902-12.EPS
R A V=- f R1 (as shown AV =-10) C o 0 eo
RL 10k
R1 100k C1 0.1µ F
R2 1M
A V=1 +R2 R1 (asshown A =11) V C o
0 eo R L 10k
2V PP
CI
R3 1M
1/4 LM 2902
2V PP
eI ~
R2 V 100k CC
R B 6.2k R3 100k
RB 6.2k eI ~ R4 100k
C1 10µ F
2902-14.EPS
C2 10 F µ
V CC
R5 100k
2902-15.EPS
7/11
2902-13.EPS
2902-11.EPS
LM2902
TYPICAL SINGLE - SUPPLY APPLICATIONS NON-INVERTING DC GAIN DC SUMMING AMPLIFIER
e1
AV=1 + R2 R1 (Asshown AV= 101)
100k
10k 1/4 LM2902
eO
+5V
100k e2 100k 100k
1/4 LM2902
eO
R1 10k
R2 1M
eO (V)
e3
0
100k
eI (mV)
e4
2902-16.EPS
100k
2902-17.EPS
eo = e1 + e2 - e3 - e4 where (e 1 + e2) (e3 + e4) to keep eo 0V
HIGH INPUT Z ADJUSTABLE GAIN DC INSTRUMENTATION AMPLIFIER
LOW DRIFT PEAK DETECTOR
R1 100k R3 100k R4 100k eI 1/4 LM2902 eO
IB
1/4 LM 2902
e1 R2 2k
1/4 LM 2902
IB LM2902 1µ F
1/4
eo
C
*
2IB 2N929
Zo
0.001µ F IB 3R 3M IB
1/4 LM2902
ZI
2IB R 1M
Gainadjust
R5 100k R6 100k R7 100k
1/4 LM 2902 e2
Input current compensation
* Polycarbonate or polyethylene
2902-18.EPS
8/11
2902-19.EPS
if R1 = R5 and R3 = R4 = R6 = R7 2R1 eo = [ 1+ ] (e2 - e1) R2 As shown eo = 101 (e2 - e1).
LM2902
TYPICAL SINGLE - SUPPLY APPLICATIONS ACTIVER BANDPASS FILTER HIGH INPUT Z, DC DIFFERENTIAL AMPLIFIER
R1 100k
C1 330pF
R1 R 4 = R2 R 3 (CMRR depends on this resistor ratio match) For
1/4 LM 2902
e1 R4 10M C2 330pF
R5 470k 1/4 LM 2902
R1 100k
R2 100k
1/4 LM2902
R4 100k R3 100k
1/4 LM2902
R3 10k 1/4 LM 2902
R6 470k
eO R7 100k R8 100k C3 10µF VCC
+V1 +V2
R4 ) (e2- e1) R3 As shown eo = (e2 - e 1) eo (1+
Vo
FO = 1kHz
2902-20.EPS 2902-21.EPS
Q = 50 AV = 100 (40dB)
USING SYMMETRICAL AMPLIFIERS TO REDUCE INPUT CURRENT (GENERAL CONCEPT)
II eI IB
IB LM2902 2N929 0.001µ F
1/4
eo
IB
IB
3M
1/4 LM2902
1.5M
IB
Aux. amplifier for input current com pensation
2902-22.EPS
9/11
LM2902
PACKAGE MECHANICAL DATA 14 PINS - PLASTIC DIP OR CERDIP
Dimensions a1 B b b1 D E e e3 F i L Z
Min. 0.51 1.39
Millimeters Typ.
Max. 1.65
Min. 0.020 0.055
Inches Typ.
Max. 0.065
0.5 0.25 20 8.5 2.54 15.24 7.1 5.1 3.3 1.27 2.54 0.050
0.020 0.010 0.787 0.335 0.100 0.600 0.280 0.201 0.130 0.100
DIP14.TBL
10/11
PM-DIP14.EPS
LM2902
PACKAGE MECHANICAL DATA 14 PINS - PLASTIC MICROPACKAGE (SO)
Dimensions A a1 a2 b b1 C c1 D E e e3 F G L M S
Min. 0.1 0.35 0.19
Millimeters Typ.
Max. 1.75 0.2 1.6 0.46 0.25 45 (typ.)
o
Min. 0.004 0.014 0.007
Inches Typ.
Max. 0.069 0.008 0.063 0.018 0.010
0.5 8.55 5.8 1.27 7.62 3.8 4.6 0.5 4.0 5.3 1.27 0.68 8 (max.)
o
0.020 8.75 6.2 0.336 0.228 0.050 0.300 0.150 0.181 0.020 0.157 0.208 0.050 0.027 0.334 0.244
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics 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 licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without noti ce. This publ ication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical componen ts in life support devices or systems without express written approval of SGS-THOMSON Microelectronics.
ORDER CODE :
© 1995 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
11/11
SO14.TBL
PM-SO14.EPS