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

fYear

2009

fDate

24-27 May 2009

Firstpage

2721

Lastpage

2724

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.2009.5118364

Filename

5118364