Clock-sweepable low-pass filter having DC gain accuracy and redu

Details Clock-sweepable low-pass filter having DC gain accuracy and redu Clock-sweepable low-pass filter having DC gain accuracy and redu

1988-06-06

1989-08-15

Mottola, Steven

Amplifiers

Signal feedback

Phase shift means in loop path

307520, 330 9, H03F 134

Patent

active

048578606

ABSTRACT:
A switched capacitor filter having DC gain accuracy and low DC offset includes an operational amplifier with a resistor (or switched capacitor) connecting one input of the operational amplifier to a signal input terminal. A first capacitor provides a first feedback loop between the output and an input of the operational amplifier, and an active network is serially connected with another resistor (or switched capacitor) as a filtered feedback loop.

REFERENCES:
patent: 4453143 (1984-06-01), Bennett
patent: 4783635 (1988-11-01), Sevastopoulos

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