Transconductor element for high speed GM-C integrated filters

Details Transconductor element for high speed GM-C integrated filters Transconductor element for high speed GM-C integrated filters

1995-05-30

1996-10-29

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Converting input voltage to output current or vice versa

327552, 327560, H03F 345

Patent

active

055700497

ABSTRACT:
A circuit technique for improving high frequency performance of current-controlled transconductor elements in transconductance-capacitance (g.sub.m -C) based monolithic filters. The circuit detects the output impedance of the transconductance transistors inside the transconductor element, regenerates and applies a negative conductance to the output of the transconductor. By cancelling the transistor output impedance, the total differential mode output impedance of the transconductor element can be maximized.

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