Differential output type filter circuit

Details Differential output type filter circuit Differential output type filter circuit

1996-04-25

1998-01-06

Mottola, Seven

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

330306, H03F 3191

Patent

active

057059543

ABSTRACT:
A differential output type filter circuit comprises, between its input terminal and differential output terminal, a reference voltage generator circuit which receives supply voltage Vcc and outputs a reference voltage, an SVR correction circuit which filters out the noise component superposed on said reference voltage, an n-order filter circuit which functions to filter out the noise of an input signal corresponding to the input of this applied signal, this n-order filter circuit being composed of a first-stage primary filter circuit 3 and an (n-1)-order filter circuit 4, and a post-amplifier circuit 5 which receives and differentially amplifies the output signal from the SVR correction circuit and output signal 105 from said n-order filter circuit. This configuration represents a so-called single-signal input type filter circuit, and features compactness and excellent SVR characteristics.

REFERENCES:
patent: 5345190 (1994-09-01), Kaylor

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