Low-Leakage Sample-and-Hold

DS011235-17

Instrumentation Amplifier

DS011235-18

If R1 = R5, R3 = R6, and R4 = R7;

Then

∴A

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.

10 Hz Bandpass Filter

DS011235-19

Q = 2.1

Gain = −8.8

10 Hz High-Pass Filter (2 dB Dip)

DS011235-20

d = 0.895

Gain = 1

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