A Wide-Range and High PSRR CMOS Voltage Reference for Implantable Device

Author

Chung, Wen-Yaw ; Chuang, Chiung-Cheng ; Chen, Ji-Ting

Author_Institution

Dept. of Electron. Eng., Chung-Yuan Christian Univ., Tao-Yuan

fYear

2006

fDate

4-7 Dec. 2006

Firstpage

482

Lastpage

485

Abstract

This paper presents a design of a high power supply rejection ratio (PSRR) voltage reference used in an implantable device. The coupling ripple noise from the power supply in implantable device can be reduced by a modified design of wide-bandwidth PSRR V_GS voltage reference with negative feedback schemes. The circuit has been verified by using TSMC 0.35mum mixed-signal 2P4M polycide 3.3/5V models. The simulation results show the proposed circuit improves PSRR up to 80dB at 1 MHz and only consumes 23.6muW at 3V power supply. The circuit not only maintains the same performance as the conventional Vgs-reference but also is suitable for high input power supply

Keywords

CMOS integrated circuits; circuit feedback; prosthetic power supplies; reference circuits; 0.35 micron; 23.6 muW; 3 V; 3.3 V; 5 V; CMOS voltage reference; TSMC mixed-signal 2P4M polycide; coupling ripple noise; high PSRR voltage reference; high input power supply; implantable device; modified design; negative feedback schemes; wide-bandwidth PSRR; Biomedical engineering; Capacitors; Circuit noise; Equations; Frequency shift keying; Noise cancellation; Power supplies; Radio frequency; Rectifiers; Voltage; PSRR; voltage reference;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0387-1

Type

conf

DOI

10.1109/APCCAS.2006.342494

Filename

4145436