Wide range single stage variable gain amplifier

Details Wide range single stage variable gain amplifier Wide range single stage variable gain amplifier

1998-10-28

2000-06-20

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330284, 327359, H03F 345

Patent

active

060782196

ABSTRACT:
A wide range single stage variable gain amplifier is provided for receiving an input signal and outputting an amplitude varied version of the received input signal. In its most basic form, the wide range single stage variable gain amplifier includes an input circuit receiving an input signal and developing an input current, a first control circuit receiving the input current, the first control circuit being selectively controllable to output an attenuated version of the received input current, a second control circuit directly connected to the first control circuit for receiving the attenuated input current therefrom, the second control circuit being selectively controllable to output a further attenuated version of the attenuated input current, and an output circuit receiving the further attenuated input current and developing an amplitude varied version of the received input signal.

REFERENCES:
patent: 3909738 (1975-09-01), Niimi
patent: 5477191 (1995-12-01), Demicheli
patent: 5767727 (1998-06-01), Kimura
patent: 5896063 (1999-04-01), Marsh et al.

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