Circuits with multiple controlled gain elements

Details Circuits with multiple controlled gain elements Circuits with multiple controlled gain elements

1986-07-03

1988-03-15

Wan, Gene

Amplifiers

With semiconductor amplifying device

Including gain control means

330285, H03G 310

Patent

active

047315903

ABSTRACT:
An automatic cable equalizer (10) is implemented in CMOS technology with a reduced requirement for off-chip components. A continuously-variable gain control resistor (28) of an AGC circuit (12) in a gain section and two additional continuously-variable gain control resistors (76, 82) in a shaping section (16) of the equalizer are driven by monotonically related control voltages (V.sub.H1, V.sub.H2, V.sub.L1, V.sub.L2) which are derived from a single feedback loop section (16) by the use of an inverter (102) and a pair of inverters with voltage offset (104, 105). An arrangement is disclosed for realizing a detector (96) and a filter (98) of the gain control feedback section. Another arrangement (134) is disclosed for realizing the inverter (102) and the inverters with voltage offset (104, 105). A third arrangement (154) is disclosed for realizing gain control resistor networks which include the gain control resistors.

REFERENCES:
patent: 3652952 (1972-03-01), Chen
patent: 3824501 (1974-07-01), Harris
patent: 4360787 (1982-11-01), Galpin
patent: 4455535 (1984-06-01), Sugawara
patent: 4606043 (1986-08-01), Aprille et al.

Affiliated with

Also associated with

Rating

Circuits with multiple controlled gain elements does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1928234