Variable-gain amplifier circuit and attenuator circuit

Details Variable-gain amplifier circuit and attenuator circuit Variable-gain amplifier circuit and attenuator circuit

1998-08-20

2000-10-24

Lee, Benny

Amplifiers

With semiconductor amplifying device

Including gain control means

330284, H03G 312, H03G 310

Patent

active

061373656

ABSTRACT:
There is disclosed a variable-gain circuit forming resistors on a semiconductor substrate. The ratio of the total resistance to the minimum resistance is made smaller than heretofore. The circuit is miniaturized. The variable-gain circuit comprises an operational amplifier, a first set of resistors R1-Rn+1, a second set of resistors Rx1-Rxm, switches SW1-SWn and a control circuit. This control circuit closes only one of the switches SW1-SWn at all times.

REFERENCES:
patent: 4132957 (1979-01-01), Hekimian et al.
patent: 4354159 (1982-10-01), Schorr et al.
patent: 4628276 (1986-12-01), Mizutani
patent: 5175508 (1992-12-01), Gingrich et al.
patent: 5663684 (1997-09-01), Hebert

Affiliated with

Also associated with

Rating

Variable-gain amplifier circuit and attenuator 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 Variable-gain amplifier circuit and attenuator circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable-gain amplifier circuit and attenuator circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1968352