LMC6022 Datasheet, PDF (11/16 Pages) National Semiconductor (TI) – Low Power CMOS Dual Operational Amplifier

Typical Single-Supply Applications (V+ = 5.0 V_DC) (Continued)
Low-Leakage Sample-and-Hold
Instrumentation Amplifier
DS011236-17
If R1 = R5, R3 = R6, and R4 = R7;
Then
DS011236-18
∴A_V ≈ 100 for circuit shown
For good CMRR over temperature, low drift resistors should be used. Matching of R3 to R6 and R4 to R7 affects CMRR. Gain may be adjusted through R2.
CMRR may be adjusted through R7.
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