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

Author

Yao, Libin ; Steyaert, Michiel ; Sansen, Willy

Author_Institution

ESAT-MICAS, Katholieke Universiteit Leuven, Belgium

fYear

2003

fDate

16-18 Sept. 2003

Firstpage

297

Lastpage

300

Abstract

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.

Keywords

CMOS integrated circuits; current mirrors; low-power electronics; operational amplifiers; switched capacitor networks; 0.8 V; 1.2 MHz; 18 pF; 50 dB; 8E-6 W; CMOS OTA; class AB operation; current mirror OTA topology; gain enhancement; low static biasing current; low-power OTA; low-power switched-capacitor application; low-voltage OTA; low-voltage switched-capacitor application; rail-to-rail output; slew rate; standard CMOS technology; Bellows; CMOS technology; Circuit topology; Energy consumption; Mirrors; Operational amplifiers; Power amplifiers; Rail to rail outputs; Threshold voltage; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Estoril, Portugal

Print_ISBN

0-7803-7995-0

Type

conf

DOI

10.1109/ESSCIRC.2003.1257131

Filename

1257131