Title :
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
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 VGS 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;
Conference_Titel :
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0387-1
DOI :
10.1109/APCCAS.2006.342494
