AGC circuit

Details AGC circuit AGC circuit

2005-12-20

2005-12-20

Nguyen, Khanh V. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S129000

Reexamination Certificate

active

06977550

ABSTRACT:
An AGC circuit, which does not require any signal integration circuit comprised of a capacitor and a resistor, is provided. To achieve the above object, when amplifying or attenuating input signal by a variable gain control circuit controlled by the gain control voltage, output signal of the variable gain amplifier circuit is rectified by a rectification circuit, the output signal of the rectification circuit is compared to an arbitrary set voltage by a voltage comparator. The up-count operation and the down-count operation of the up/down counter is controlled to changeover by the output signal of the voltage comparator, and a voltage corresponding to the count value of the up/down counter is output from the D/A conversion circuit. Thus, gain control voltage corresponding to the voltage output from the D/A conversion circuit is supplied to the variable gain amplifier circuit.

REFERENCES:
patent: 5566363 (1996-10-01), Senda
patent: 5606284 (1997-02-01), Tamesue et al.
patent: 5752171 (1998-05-01), Akiya
patent: 6038432 (2000-03-01), Onoda
patent: 6057732 (2000-05-01), Morishita
patent: 08116226 (1996-05-01), None
patent: 2901899 (1999-03-01), None

Affiliated with

Also associated with

Rating

AGC circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with AGC circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AGC circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3517267