Title :
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
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;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257131
