Patent · US Expired

Bias technique for operating point control in multistage circuits

US7081775B2 · kind B2 · utility

0Cited by
9References
3Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 3, 2003
Grant dateJul 25, 2006
Priority date—
Expiry dateMar 3, 2023

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG05F3/242
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

A multistage analog circuit for independently controlling a bias current in each stage of the multistage analog circuit having an input stage, an intermediate stage, and an output stage, includes a first current source which controls the input stage of the circuit, a second current source which controls the intermediate stage of the circuit, and a third current source which controls the output stage of the circuit. The bias current in each stage of the circuit is set by the first, second, and third current sources. An output voltage of the circuit is capable of remaining the same when the first current source is changed to affect an input transconductance of the circuit.

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