Title :
A simple voltage reference with ultra supply independency
Author :
Bai, Shun ; Skafidas, Stan
Author_Institution :
Bionic Vision Australia, Univ. of Melbourne, Parkville, VIC, Australia
Abstract :
An ultra wide dynamic range voltage reference operating with power consumption of pico-watt has been designed for a retinal prosthesis device using IBM 65nm CMOS process. The temperature coefficient is zeroed at 37 °C while achieving 2.5 ppm/°C over the range from 25 °C to 75 °C. A perfect suppression of the supply voltage dependence is realised to provide line sensitivity of 0.04%/V with ultra low input voltage of 0.5 V up to 3.5 V. The power supply noise attenuation is simulated to maintain at -100 dB across whole frequency band up to 100GHz. The occupied chip area is maintained as low as 0.003 mm2 with size of 35μm by 75μm.
Keywords :
CMOS integrated circuits; eye; integrated circuit noise; power supply circuits; prosthetic power supplies; reference circuits; IBM CMOS process; line sensitivity; noise figure -100 dB; pico-watt design; power consumption; power supply noise attenuation simulation; retinal prosthesis device; size 65 nm; supply voltage dependence suppression; temperature 25 degC to 75 degC; temperature coefficient; ultra low input voltage; ultrasupply independency; ultrawide dynamic range voltage reference; voltage 0.5 V to 3.5 V; Logic gates; MOS devices; Noise; Temperature dependence; Temperature sensors; Threshold voltage; Transistors;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271900
