Patent · US Active

Methods and apparatus for implementing an output circuit

US7635990B1 · kind B1 · utility

36Cited by

7References

14Claims

0Family size

Assignee

XILINX, INC. · US

Inventors

Guo Jun Ren · San Jose, US
Qi Zhang · Hangzhou City, CN

Key dates

Filing date	Jul 18, 2008
Grant date	Dec 22, 2009
Priority date	—
Expiry date	Jul 18, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L25/0272
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An output circuit providing an adjustable output amplitude and common-mode voltage is described. The output circuit includes at least one driver circuit and a common-mode feedback circuit including a first replica circuit of the at least one driver circuit. The common-mode feedback circuit is coupled to receive a first bias and provide an output coupled to the at least one driver circuit. The output circuit may also include a current circuit having a configurable resistor and a second replica circuit of the at least one driver circuit. The current circuit may be coupled to receive a second bias and to provide an output coupled to the at least one driver circuit and the common-mode feedback circuit.

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