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A wide-range tunable BiCMOS transconductor

Authors
Journal
Microelectronics Journal
0026-2692
Publisher
Elsevier
Publication Date
Volume
24
Issue
5
Identifiers
DOI: 10.1016/0026-2692(93)90123-v
Disciplines
  • Communication

Abstract

Abstract This paper describes a fully differential BiCMOS operational transconductance amplifier (OTA) with a transconductance parameter G m that is tunable over 1 decade. Another significant feature of this OTA is that the tuning scheme is based on current steering resulting in the maximum input signal level being independent of tuning and a reduction in bias dependencies. The circuit is suitable for implementing adaptive analog OTA-C filters for high-frequency data communication applications where moderate SNR is acceptable.

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