Linear transconductance amplifier

Details Linear transconductance amplifier Linear transconductance amplifier

1981-02-12

1983-06-28

Mullins, James B.

Amplifiers

With amplifier bypass means

330252, 330254, 330261, H03F 102, H03F 345

Patent

active

043908489

ABSTRACT:
A linear transconductance amplifier includes a differential transconductance amplifier stage and a differential correction amplifier stage. In order to achieve linear operation over a wide dynamic range, the nonlinearities generated in the transconductance amplifier stage are substantially cancelled by the nonlinearities generated in the correction amplifier stage. This is accomplished by cross-coupling the two stages and establishing the relative gain of the correction amplifier stage with respect to the transconductance amplifier stage such that the desired cancellation occurs. In a preferred embodiment, optimum cancellation occurs when the gain of the correction amplifier stage is substantially one-half the gain of the transconductance amplifier stage.

REFERENCES:
patent: 4267516 (1981-05-01), Traa

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