Compensation for a feedback amplifier with current output stage

Details Compensation for a feedback amplifier with current output stage Compensation for a feedback amplifier with current output stage

1990-12-03

1992-05-26

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330 85, 330260, 330294, H03F 134

Patent

active

051172003

ABSTRACT:
A wide bandwidth transconductance amplifier utilizing internal feedback is stabilized over a wide range of output currents. A compensation driver circuit senses the output current in the amplifier and feeds it back through a compensation capacitor. This keeps the bandwidth of the amplifier constant and optimally stabilized over a 16 to 1 range in output current. This compensation scheme eliminates compensation compromises that can limit the useful dynamic range of transconductnce amplifiers while offering a wide bandwidth low distortion transconductance with high output impedance over frequency.

REFERENCES:
patent: 4213098 (1980-07-01), Tsividis
patent: 4371843 (1983-02-01), Fang et al.
patent: 4774478 (1988-09-01), Taylor

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