Patent · US Active

Fully-differential amplifier with input common-mode voltage control

US11990879B2 · kind B2 · utility

1Cited by

2References

19Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Joel M. Halbert · Tucson, US
Xiyao ZHANG · Hong Kong, CN

Key dates

Filing date	May 11, 2021
Grant date	May 21, 2024
Priority date	—
Expiry date	May 24, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2200/129
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A fully-differential amplifier (FDA) includes a core differential amplifier and a common-mode input voltage control circuit. The core differential amplifier includes differential inputs. The common-mode input voltage control circuit is coupled to the differential inputs. The common-mode input voltage control circuit is configured to generate an error signal as a difference of an input common mode voltage at the differential inputs and a target common mode input voltage (VICM); and to adjust the input common mode voltage to the VICM based on the error signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.