Circuit and a method for controlling the bias current in a...

Details Circuit and a method for controlling the bias current in a... Circuit and a method for controlling the bias current in a...

2005-05-10

2005-05-10

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

C330S009000

Reexamination Certificate

active

06891439

ABSTRACT:
A tunable constant GM circuit allows to compensate for temperature and process variations with high precision by correspondingly adjusting a resistance value and/or the ratio of transistor widths. Thus, in switched capacitor circuits the frequency behaviour, such as the settling time, may be controlled by providing a compensated bias to the transconductance amplifiers typically used in these circuits.

REFERENCES:
patent: 5414392 (1995-05-01), Schupak
patent: 5545972 (1996-08-01), Kiehl
patent: 5892402 (1999-04-01), Tsubaki et al.
patent: 5986508 (1999-11-01), Nevin
patent: 6529080 (2003-03-01), Seymour et al.
Tietze, U.; Schenk, Ch.: Halbleiter-Schaltungstechnik, 11thed., Berlin [among others]: Springer, 1999, pp. 319-324, 545-549, 893-896, ISBN 3-540-64192.0.

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