Differential amplifier with double output stages

Details Differential amplifier with double output stages Differential amplifier with double output stages

1997-09-30

1999-08-24

Mottola, Steven J.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330260, H03F 345

Patent

active

059429429

ABSTRACT:
A differential amplifier with double output stages used to eliminate the charge injection noise and switching capacitor noise is disclosed. This system includes an input stage, a middle stage, a first balanced output stage, a second balanced output stage, a negative feedback network and a common mode feedback network. The input stage processing the differential input signal, connects to the middle stage and the negative feedback network which increasing the gain of input signal and connects to the first balanced output stage and second balanced output stage. The first balanced output stage is connected to the negative feedback network for stabilizing the frequency response, and the second balanced output stage is connected to the common mode feedback network for controlling the common level of double terminals output into a setting range of voltage. Thus the output signal of the amplifier will be a clear waveform without redundant noise for next connecting circuit.

REFERENCES:
patent: 4697152 (1987-09-01), Westwick
patent: 5117199 (1992-05-01), Wang et al.
patent: 5216380 (1993-06-01), Carbou

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