Implementation of a 1 volt supply voltage CMOS subbandgap reference circuit

Author

James, T.D. ; Lee, Young Jun ; Kim, Yong-Bin ; Wilsch, Harald

fYear

2003

fDate

17-20 Sept. 2003

Firstpage

323

Lastpage

326

Abstract

This paper presents a CMOS subbandgap reference circuit with a 1 V power supply voltage. To obtain a subbandgap reference voltage with a 1 V supply voltage, threshold voltage reduction and subthreshold operation techniques are aggressively used. Large Δ 0.631V_BE (100 mV) as well as a 90 dB operational amplifier are used to circumvent amplifier offset problem. This circuit is implemented using a 0.5 μm CMOS standard process without special process modification and its size is 1370 μm×1390 μm. The temperature coefficient of this circuit is 17 ppm from -40 °C to 125°C after resistor trimming, and the minimum operation power supply voltage is 0.95 V. The measured total current consumption is below 10 μA and the measured output voltage is 0.631 V at room temperature.

Keywords

CMOS analogue integrated circuits; integrated circuit design; operational amplifiers; reference circuits; voltage regulators; -40 to 125 degC; 0.5 micron; 0.631 V; 0.95 V; 1 V; 10 muA; 1370 micron; 1390 micron; 90 dB; CMOS subbandgap reference circuit; amplifier offset; bandgap reference voltage circuit; circuit temperature coefficient; operational amplifier; resistor trimming; threshold voltage reduction; CMOS process; Circuits; Current measurement; Operational amplifiers; Power measurement; Power supplies; Resistors; Temperature; Threshold voltage; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

SOC Conference, 2003. Proceedings. IEEE International [Systems-on-Chip]

Print_ISBN

0-7803-8182-3

Type

conf

DOI

10.1109/SOC.2003.1241535

Filename

1241535