Novel voltage-regulating circuit for low-voltage and low-power OTA realization using MOSFETs in the non-saturation region

Author

Sato, Takao ; Wada, Kazuyuki ; Akagiand, Shigetaka T. ; Fujii, Nobuo

Author_Institution

Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan

Volume

5

fYear

2000

fDate

2000

Firstpage

477

Abstract

An operational transconductance amplifier (OTA) is one of the most important analog building blocks. This paper proposes a novel voltage-regulating circuit for an OTA realization. The voltage-regulating circuit allows one to implement a simple structure OTA using MOSFET´s in the non-saturation region. The resultant OTA using the proposed voltage-regulating circuit operates under a single 1.5 V power supply voltage. Simulation results of the OTA show harmonic distortion less than 1% even when 0.7 V_p-p input voltage is applied. Its power consumption is 85.8 μW and cutoff frequency is 7 MHz

Keywords

CMOS analogue integrated circuits; linearisation techniques; low-power electronics; operational amplifiers; voltage regulators; 1.5 V; 7 MHz; 85.8 muW; LV operational transconductance amplifier; MOSFETs; analog building block; harmonic distortion; low-power OTA; low-voltage OTA; nonsaturation region; single supply voltage; voltage-regulating circuit; Analog circuits; CMOS process; Circuit simulation; Cutoff frequency; Equations; Linearization techniques; MOSFET circuits; Operational amplifiers; Transconductance; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on

Conference_Location

Geneva

Print_ISBN

0-7803-5482-6

Type

conf

DOI

10.1109/ISCAS.2000.857475

Filename

857475