Differential amplifier circuit

Details Differential amplifier circuit Differential amplifier circuit

1998-10-15

2000-10-24

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Nonlinear amplifying circuit

327 56, 327 89, G06G 712

Patent

active

061373508

ABSTRACT:
The average value of an input signal supplied to an input terminal is generated by an integrating circuit consisting of a series circuit of a capacitor, a constant-current source transistor, and a resistor. The average value is used as the reference voltage for the differential amplifier circuit. Further, to each of differential pair transistors the sources of which are commonly connected, other transistors are cascode connected, respectively. Supplied to each gate of the cascode connected transistors is a divisional voltage of the differential voltage between the average voltage from the integrating circuit and the circuit power supply voltage, which divisional voltage is obtained by a capacitive divider circuit.

REFERENCES:
patent: 4870367 (1989-09-01), Nakase et al.
patent: 5142554 (1992-08-01), Stribling et al.
patent: 5438289 (1995-08-01), Kan et al.
patent: 5530395 (1996-06-01), Ting
patent: 5994927 (1999-11-01), Naito et al.

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