Class AB readout cell designed to reduce the noise of a concurrent continuous-time readout architecture for imaging systems

Mayra Sarmiento; Jorge Garcia; Fouad Kiamilev; William Lawler

doi:10.1117/12.605485

19 May 2005 Class AB readout cell designed to reduce the noise of a concurrent continuous-time readout architecture for imaging systems

Mayra Sarmiento, Jorge Garcia, Fouad Kiamilev, William Lawler

Author Affiliations +

Proceedings Volume 5791, Laser Radar Technology and Applications X; (2005) https://doi.org/10.1117/12.605485
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

An alternative, class AB configuration of a proven class A readout cell for active/passive imaging systems is presented. Comparison between the two approaches shows that class AB circuit lowers power consumption and reduces noise by a factor of 3 while using nearly equal chip area. On the other hand, class AB has lower bandwidth because it operates at lower bias currents. A 0.5μm CMOS test chip that includes both types of readout circuits has been designed, fabricated and is currently being tested. Simulation results, using readout circuits from this test chip, are used to compare the two configurations.

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Mayra Sarmiento, Jorge Garcia, Fouad Kiamilev, and William Lawler "Class AB readout cell designed to reduce the noise of a concurrent continuous-time readout architecture for imaging systems", Proc. SPIE 5791, Laser Radar Technology and Applications X, (19 May 2005); https://doi.org/10.1117/12.605485

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