Current feedback differential amplifier clamp

Details Current feedback differential amplifier clamp Current feedback differential amplifier clamp

1997-04-14

1999-01-12

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including protection means

330207P, 341155, H02H 720, H03M 112

Patent

active

058595694

ABSTRACT:
A current steering circuit diverts bias current from a differential current summing amplifier's front end when the differential input exceeds a safe threshold level, thus preventing the amplifier's output stage from being overdriven. Diverting the front end's bias currents also turns off transistors within the amplifier's front end and thus protects the front end from damage which may otherwise result from excessive input signals.

REFERENCES:
patent: 4166983 (1979-09-01), Lacroix
patent: 4780689 (1988-10-01), Saller et al.
patent: 5410274 (1995-04-01), Birdsall et al.
patent: 5471175 (1995-11-01), Chiu et al.
patent: 5530444 (1996-06-01), Tice et al.

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