Accurate quiescent current control scheme in floating...

Details Accurate quiescent current control scheme in floating... Accurate quiescent current control scheme in floating...

2007-12-04

2007-12-04

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

C330S267000

Reexamination Certificate

active

10975107

ABSTRACT:
Provided is an amplifier including a system for controlling output stage quiescent current. The amplifier includes a driving stage including first pmos and nmos transistors coupled together, and an output stage connected to the driving stage. The output stage includes second pmos and nmos transistors coupled together. The amplifier also includes a quiescent control stage connected to the driving stage and including third pmos and nmos transistors coupled together, fourth pmos coupled to third pmos and 4thnmos coupled to 3rdnmos. A topology of the coupled third pmos and nmos transistors substantially matches a topology of the coupled first pmos and nmos transistors, and 4thpmos and nmos match to 2nd pmos and nmos.

REFERENCES:
patent: 5311145 (1994-05-01), Huijsing et al.
patent: 6369653 (2002-04-01), Kappes
patent: 6583669 (2003-06-01), Eschauzier et al.

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