ywguo
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Hi,
The on resistor of the switch, either a complementary switch or NOT, is in series with a capacitor (or a parasitic capacitor). Thus it introduces a zero. So try to minimize the on resistance and make the zero high enough so that it doesn't affect the response of the switched capacitory integrator. In other words, make the circuitry work as if the switch is ideal.
Normally the response should be decided by the opamp GWB, so make the zero much higher than the GBW.
Best regards, Yawei
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