Transconductance scaling circuit and method responsive to a rece

Details Transconductance scaling circuit and method responsive to a rece Transconductance scaling circuit and method responsive to a rece

1994-12-27

1996-06-25

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Nonlinear amplifying circuit

327103, 330252, 330278, 330291, G06G 712

Patent

active

055303994

ABSTRACT:
A transconductance scaling circuit (500) includes an operational transconductance amplifier (504) having a tunable voltage, V.sub.tune2. A feedback loop controls the tunable voltage, V.sub.tune2, in response to the digital programming of the transconductance amplifier (504) and provides the tunable voltage as a current scaling output.

REFERENCES:
patent: 4859955 (1989-08-01), Trethewey
patent: 4926063 (1990-05-01), Donaldson
patent: 4990916 (1991-02-01), Wynne et al.
patent: 4999586 (1991-03-01), Meyer et al.
patent: 5001441 (1991-03-01), Gen-Kuong
patent: 5410274 (1995-04-01), Birdsall et al.
Vol. 26, No. 12 Dec. 1991 IEEE Journal of Solid State Circuits; Design of a 15-MHz CMOS Continuous Time Filter with On-Chip Tuning, John M. Khoury.

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