Offset-compensated self-biased differential amplifier

Details Offset-compensated self-biased differential amplifier Offset-compensated self-biased differential amplifier

2005-11-22

2005-11-22

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S009000, C330S258000

Reexamination Certificate

active

06967532

ABSTRACT:
An apparatus comprising a differential amplifier having a first input coupled to receive a voltage reference signal, a second input and an output. The apparatus also includes an inverter whose input is coupled to the differential amplifier output. The inverter includes first and second transistors that have source/drain regions. A third transistor is coupled between a source/drain region of the inverter and a power supply rail to cause a switching point of the inverter to track a common mode bias voltage of the differential amplifier.

REFERENCES:
patent: 4543538 (1985-09-01), Fay
patent: 4598215 (1986-07-01), Schechtman et al.
patent: 4937476 (1990-06-01), Bazes
patent: 5684414 (1997-11-01), Linebarger et al.
patent: 6400220 (2002-06-01), Wang et al.

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