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A 500-nW floating-gate amplifier with programmable gain

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2 Author(s)
P. M. Furth ; Dept. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA ; H. A. Om'mani

Micro-power voltage amplification is achieved using capacitive feedback via multiple-input floating-gate transistors. The proposed amplifier uses self-biased cascode transistors operating in the subthreshold region for near rail-to-rail output voltage range. Simulations show a 72 kHz GBW when driving 1 pF. Power consumption is 500 nW per stage of gain. Chip measurements of a 4-stage programmable-gain amplifier implemented in a 1.2 μm technology confirm functionality of the design

Published in:

Circuits and Systems, 1998. Proceedings. 1998 Midwest Symposium on

Date of Conference:

9-12 Aug 1998