Title :
A novel OTA with dual bulk-driven input stage
Author :
Pan, Sheng-Wen ; Chuang, Chiung-Cheng ; Yang, Chung-Huang ; Lai, Yu-Sheng
Author_Institution :
Dept. of Electron. Eng., Chung-Yuan Christian Univ., Chung-Li, Taiwan
Abstract :
A novel operational transconductance amplifier with dual bulk-driven input stage is introduced, suitable for portable biomedical monitoring system and battery-operated devices. The scheme not only avoids the leakage current of conventional bulk-driven circuit but also reduces power consumption. Based on the proposed topology, a low voltage, low power OTA with rail-to-rail input common-mode range and constant small signal behavior is achieved. The simulated power consumption of the OTA is only 9.9 muW utilizing a 0.9 V supply voltage in TSMC 0.35 mum CMOS technology.
Keywords :
CMOS integrated circuits; MOSFET; leakage currents; low-power electronics; operational amplifiers; NMOS transistor; TSMC CMOS technology; battery-operated device; biomedical monitoring system; bulk-driven circuit leakage current; dual bulk-driven input stage; low voltage OTA; operational transconductance amplifier; power 9.9 muW; power consumption reduction; rail-to-rail input stage; size 0.35 mum; voltage 0.9 V; Biomedical monitoring; CMOS technology; Circuit simulation; Circuit topology; Energy consumption; Leakage current; Low voltage; Operational amplifiers; Rail to rail inputs; Transconductance;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118364
