A 3 to 5 V CMOS bandgap voltage reference with novel trimming

Author

Gupta, Sandhya ; Black, William

Author_Institution

Microelectron. Res. Center, Iowa State Univ., Ames, IA, USA

Volume

2

fYear

1996

Firstpage

969

Abstract

This paper describes a bandgap voltage reference generator which operates on a 3-5 V power supply and is compatible with a standard n-well digital CMOS process. The simulated output voltage has a .4 mV variation in the operating temperature range of 0°C to 90°C and the power consumption of the circuit is about 1.5 mW. The circuit is relatively simple as it does not use an operational amplifier and the circuit has an internally regulated voltage supply which improves the power supply rejection ratio. The trimming capability to adjust the resistors is provided with a DAC arrangement of poly overlay on n-well resistors which allows adjustment of the resistor ratios by up to 2%

Keywords

CMOS analogue integrated circuits; power supply circuits; reference circuits; 0 to 90 C; 1.5 mW; 3 to 5 V; DAC; bandgap voltage reference generator; n-well digital CMOS process; poly overlay; power supply rejection ratio; resistor ratio; trimming; CMOS process; Circuit simulation; Energy consumption; Operational amplifiers; Photonic band gap; Power generation; Power supplies; Resistors; Temperature distribution; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1996., IEEE 39th Midwest symposium on

Conference_Location

Ames, IA

Print_ISBN

0-7803-3636-4

Type

conf

DOI

10.1109/MWSCAS.1996.588131

Filename

588131