Low noise, bandwidth compensated transimpedance amplifier

Details Low noise, bandwidth compensated transimpedance amplifier Low noise, bandwidth compensated transimpedance amplifier

1998-04-01

1999-11-09

Lee, Benny

Amplifiers

Sum and difference amplifiers

330308, H03F 345

Patent

active

059822325

ABSTRACT:
A low noise, high gain-bandwidth preamplifier is formed which employs positive, capacitive feedback to compensate the frequency response of the amplifier for an applied input capacitance. The circuit includes a differential amplifier circuit with conventional resistive, negative feedback. The circuit further includes a pair of compensating capacitors coupled across the amplifier, providing positive feedback which compensates for an applied input capacitance. The preamplifier circuit provides a high gain-bandwidth along with enhanced noise performance.

REFERENCES:
patent: 3500223 (1970-03-01), Thurnell
patent: 5329115 (1994-07-01), Lim
patent: 5424675 (1995-06-01), Matsushita
patent: 5517035 (1996-05-01), Krijntjes
patent: 5864416 (1999-01-01), Williams

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