LM2902DT STMicroelectronics, LM2902DT Datasheet - Page 11

• Manufacturer Part Number: LM2902DT
• Description: IC OP AMP LP QUAD 14-SOIC
• Manufacturer: STMicroelectronics

Specifications of LM2902DT

• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Slew Rate: 0.4 V/µs
• Gain Bandwidth Product: 1.3MHz
• Current - Input Bias: 20nA
• Voltage - Input Offset: 2000µV
• Current - Supply: 1.5mA
• Current - Output / Channel: 20mA
• Voltage - Supply, Single/dual (±): 3 V ~ 30 V, ±1.5 V ~ 15 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Number Of Channels: 4
• Voltage Gain Db: 100 dB
• Common Mode Rejection Ratio (min): 70 dB
• Input Offset Voltage: 7 mV
• Operating Supply Voltage: 5 V, 9 V, 12 V, 15 V
• Supply Current: 1.2 mA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Maximum Dual Supply Voltage: +/- 15 V
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-1557-2

LM2902
Figure 25. High input Z, DC differential
Figure 27. Using symmetrical amplifiers to
+V1
+V2
eo = [ 1 +
As shown eo = (e2 - e1)
1.5MΩ
e
I
100k Ω
I
I
B
B
R1
R4
R3
I
I
amplifier
reduce input current (general
concept)
] (e2 - e1)
2N 929
I
B
LM2902
100k Ω
1/4
LM2902
3MΩ
R2
1/4
I
0.001 μ F
I
B
B
LM2902
100k Ω
1/4
R3
Aux. amplifier for input
current compensation
e
o
LM2902
100k Ω
1/4
R4
V
o
Figure 26. Low drift peak detector
* Polycarbonate or polyethylene
e
I
Z
I
LM2902
1/4
I
Typical single-supply applications
B
1 μ F
1MΩ
R
2I
B
*
C
2N 929
2I
I
B
B
LM2902
3MΩ
1/4
3R
I
I
B
0.001 μ F
B
LM2902
Z
o
1/4
Input current
compensation
e
o
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