Reference voltage driver for low-voltage CMOS A/D converters

Author

Waltari, Mikko ; Halonen, Kari

Author_Institution

Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland

Volume

1

fYear

2000

fDate

2000

Firstpage

28

Abstract

A circuit for generating reference voltages for an A/D converter is presented. The circuit consisting of a bandgap reference and a driver circuit capable of operating on sub 1-volt supply voltages. The circuit is designed using a standard 0.5 μm CMOS technology. Simulations show maximum 0.24% variation in the generated reference voltage over a temperature range from -20°C to 100°C and a supply voltage range from 0.95 V to 1.50 V. The circuit is capable of driving a 2 pF switched capacitor load at 5 MHz clock rate while consuming 450 μW of power from a 1.0 V supply

Keywords

CMOS analogue integrated circuits; analogue-digital conversion; low-power electronics; reference circuits; -20 to 100 C; 0.5 micron; 0.95 to 1.5 V; 2 pF; 450 muW; 5 MHz; LV CMOS A/D converters; bandgap reference; driver circuit; low-voltage CMOS ADC; reference voltage driver; standard CMOS technology; CMOS technology; Circuit simulation; Clocks; Driver circuits; Photonic band gap; Power generation; Switched capacitor circuits; Switching circuits; Temperature distribution; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2000. ICECS 2000. The 7th IEEE International Conference on

Conference_Location

Jounieh

Print_ISBN

0-7803-6542-9

Type

conf

DOI

10.1109/ICECS.2000.911474

Filename

911474