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Proceedings Paper

Low-power highly linear output buffer
Author(s): David Foley; Neal R. Butler; James A. Stobie
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Paper Abstract

A class AB CMOS output buffer has been designed for use on an IR focal plane array. Given the requirements for power dissipation and load capacitance a class A output, such as a source follower, would be unsuitable. The approach taken uses a class AB amplifier configured as a charge integrator. Thus it converts a charge packet in the focal plane multiplexer to a voltage which is then the output of the focal plane. With a quiescent current of 18 micro-a and a load capacitance of 100 pf, the amplifier has an open loop unity gain bandwidth of 900 khz. Integral nonlinearity is better than .03 percent over 5.5 volts when run with VDD-VSS = 6v.

Paper Details

Date Published: 1 July 1992
PDF: 12 pages
Proc. SPIE 1684, Infrared Readout Electronics, (1 July 1992); doi: 10.1117/12.60507
Show Author Affiliations
David Foley, Loral Infrared and Imaging Systems (United States)
Neal R. Butler, Loral Infrared and Imaging Systems (United States)
James A. Stobie, Loral Infrared and Imaging Systems (United States)

Published in SPIE Proceedings Vol. 1684:
Infrared Readout Electronics
Eric R. Fossum, Editor(s)

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