Title :
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
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;
Conference_Titel :
Circuits and Systems, 1996., IEEE 39th Midwest symposium on
Conference_Location :
Ames, IA
Print_ISBN :
0-7803-3636-4
DOI :
10.1109/MWSCAS.1996.588131
