Differential amplifier having a low-pass characteristic

Details Differential amplifier having a low-pass characteristic Differential amplifier having a low-pass characteristic

1980-03-17

1982-07-27

Tokar, Michael J.

Amplifiers

With periodic switching input-output

330252, H03F 102

Patent

active

043420010

ABSTRACT:
The input terminal of a voltage follower is coupled to a point of reference potential via a first capacitor. A second capacitor is alternately connected across a source of input signals and connected in parallel with the voltage follower during mutually exclusive time intervals whereby an output voltage is produced across the first capacitor proportional to a differential mode component of the input signal. The arrangement is such that internally generated noise is suppressed, very low frequency breakpoints (lag) may be realized with practical element values and there is substantially no tendency toward saturation in the presence of high frequency input noise components.

REFERENCES:
patent: 3153202 (1964-10-01), Woolam
patent: 4086541 (1978-04-01), Katou
patent: 4109308 (1978-08-01), Rodel

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