2015
DOI: 10.5573/jsts.2015.15.3.326
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An OTA with Positive Feedback Bias Control for Power Adaptation Proportional to Analog Workloads

Abstract: Abstract-This paper reports an adaptive positive feedback bias control technique for operational transconductance amplifiers to adjust the bias current based on the output current monitored by a current replica circuit. This technique enables operational transconductance amplifiers to quickly adapt their power consumption to various analog workloads when they are configured with negative feedback. To prove the concept, a test voltage follower is fabricated in 0.5-μm CMOS technology. Measurement result shows th… Show more

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