Transconductor employing differential pair composite field effec

Details Transconductor employing differential pair composite field effec Transconductor employing differential pair composite field effec

1993-06-08

1994-12-13

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330257, H03F 345

Patent

active

053732480

ABSTRACT:
A transconductor includes first and second differential pair compound transistors coupled between a first reference node and a common node. The compound transistors are commoned to each other at a common node. A single current source is coupled between the common node and a second reference node. In an alternate embodiment, a current turnaround circuit may be used to convert the transconductor to a single ended configuration.

REFERENCES:
patent: 3916333 (1975-10-01), Zuk
patent: 4599572 (1986-07-01), Nakayama
patent: 4647839 (1987-03-01), Siligoni et al.
Kwan, et al., "An Adaptive Analog Continuous-Time CMOS Biquadratic Filter" IEEE Journal of Solid-State Circuits, vol. 26, No. 6, Jun. 1991 pp. 859-867.

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