LM2902W STMicroelectronics, LM2902W Datasheet - Page 10
LM2902W
Manufacturer Part Number
LM2902W
Description
Low power quad operational amplifier
Manufacturer
STMicroelectronics
Datasheet
1.LM2902W.pdf
(17 pages)
Specifications of LM2902W
Wide Gain Bandwidth
1.3 MHz
Large Voltage Gain
100 dB
Very Low Supply Current Per Amplifier
375 μA
Low Input Bias Current
20 nA
Low Input Offset Current
2 nA
Esd Internal Protection
800 V
Single Supply
+3 V to +30 V
Dual Supplies
±1.5 V to ±15 V
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Typical single-supply applications
10/17
Figure 24. High input Z, DC differential
Figure 26. Using symmetrical amplifiers to
+V1
+V2
eo = [ 1 +
As shown eo = (e2 - e1)
1.5 MΩ
e
100 kΩ
I
I
I
R1
B
B
R4
R3
I
I
amplifier
] (e2 - e1)
reduce input current (general
concept)
2N 929
I
LM2902
B
100 kΩ
1/4
LM2902
R2
3 MΩ
1/4
I
I
B
0.001 μF
B
100 kΩ
LM2902
1/4
R3
Aux. amplifier for input
current compensation
e
o
LM2902
100 kΩ
1/4
R4
Doc ID 9922 Rev 8
V
o
Figure 25. Low drift peak detector
* Polycarbonate or polyethylene
e
I
Z
I
LM2902
1/4
I
B
1 μF
1 MΩ
R
2I
B
*
C
2N 929
2I
I
B
B
LM2902
3 MΩ
1/4
3R
I
I
B
0.001 μF
B
LM2902
Z
1/4
o
Input current
compensation
LM2902W
e
o