Electronic circuit comprising complementary transconductors for

Details Electronic circuit comprising complementary transconductors for Electronic circuit comprising complementary transconductors for

1997-07-14

1999-01-12

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330258, H03F 345

Patent

active

058595660

ABSTRACT:
An electronic circuit comprises coupled transconductors (TR1 and TR2). The transconductors comprise two complementary differential pairs whose outputs are connected directly to two output terminals. Two diodes (P3, N3) are arranged in series between the common terminals of the differential pairs. The common-mode voltage of the differential pairs is available on the node between the two diodes. The common-mode voltage of the one transconductor (TR2) is used to control one of the bias current sources of the other transconductor (TR1) and, if desired, also that of the one transconductor (TR2). In this way the common-mode voltage on the output terminals of the other transconductor (TR1) is fixed.

REFERENCES:
patent: 3870966 (1975-03-01), Dingwall
patent: 3991380 (1976-11-01), Pryor
patent: 4766394 (1988-08-01), Yukawa
patent: 5412343 (1995-05-01), Rijns
patent: 5631607 (1997-05-01), Huijsing et al.
"Integrated Continuous-Time Filters", Principle, Design, and Applications, Edited by Y.P. Tsividis and J.O. Voorman, IEEE Press, New York, Paper 3-B.4.
"A Micropower CMOS Continuous-Time Low-Pass Filter", IEEE Journal of Solid-State Circuits, vol. 24, No. 3, Jun. 1989, pp. 736-743.

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