Digitally programmable gain control circuit

Details Digitally programmable gain control circuit Digitally programmable gain control circuit

2007-05-01

2007-05-01

Corrielus, Jean B. (Department: 2611)

Pulse or digital communications

Receivers

Automatic gain control

C341S138000, C341S139000, C341S140000, C330S129000, C330S133000

Reexamination Certificate

active

10151483

ABSTRACT:
A digitally programmable gain control circuit and method of operating the same is disclosed. The gain control circuit includes a programmable gain amplifier having an amplifier structure represented by a plurality of overlapping discrete monotonic transfer function segments, wherein at least one point of non-monotonicity occurs among one or more of the plurality of overlapping discrete monotonic transfer function segments, and a gain segment translator circuit operative to translate a monotonic gain value to a segment code to match the non-monotonic characteristics of the programmable gain amplifier. The programmability of the gain amplifier is provided by a coarse gain control circuit and a fine gain control circuit.

REFERENCES:
patent: 4951763 (1990-08-01), Zimmerman et al.
patent: 5300736 (1994-04-01), Ehrhardt
patent: 5668501 (1997-09-01), Venes
patent: 6441684 (2002-08-01), Nakamura
patent: 2002/0094788 (2002-07-01), Hayashi et al.

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