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A 0.8-V, 8-/spl mu/W, CMOS OTA with 50-dB gain and 1.2-MHz GBW in 18-pF load

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3 Author(s)
Libin Yao ; ESAT-MICAS, Katholieke Universiteit Leuven, Belgium ; Steyaert, M. ; Sansen, Willy

A low-power low-voltage OTA with rail-to-rail output is introduced. The proposed topology is based on the common current mirror OTA topology and provide gain enhancement without extra power consumption. Implemented in a standard 0.25/spl mu/m CMOS technology, the proposed OTA achieves 50 dB DC gain in 0.8 V supply voltage. The GBW is 1.2MHz and the static power consumption is 8/spl mu/W while driving 18pF load. The class AB operation increases the slew rate and still maintains low static biasing current. This topology is suitable for low-power low-voltage switched-capacitor application.

Published in:

Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European

Date of Conference:

16-18 Sept. 2003