A programmable CMOS bandgap voltage reference circuit using current conveyor

Author

Khan, Qadeer Ahmad ; Dutta, Debashis

Author_Institution

Semicond. Product Sector, Motorola India Ltd., Gurgaon, India

Volume

1

fYear

2003

fDate

14-17 Dec. 2003

Firstpage

8

Abstract

This paper presents a new structure of a bandgap circuit which can be programmed to get any desired output voltage. Unlike conventional bandgap circuits, the proposed bandgap circuit uses MOS transistors operating in the subthreshold region instead of bipolar transistors to generate PTAT and IPTAT currents. Use of the current conveyor makes the circuit capable of being operated at lower supply voltage. The circuit is capable of generating variable as well as multi voltage references with low dependency on process, voltage and temperature. The proposed architecture was designed in 0.13 μm CMOS technology with 1.5 V power supply and simulations were carried out using SPICE. The total variation in the output voltage is 0.67% over the temperature range of -40-125 deg C.

Keywords

CMOS analogue integrated circuits; current conveyors; low-power electronics; programmable circuits; reference circuits; voltage regulators; -40 to 125 degC; 0.13 micron; 1.5 V; CMOS bandgap voltage reference circuit; CMOS technology; current conveyor; low supply voltage; multiple voltage references; programmable bandgap voltage reference; subthreshold region MOS transistors; variable references; Bipolar transistors; CMOS technology; Circuit simulation; Low voltage; MOSFETs; Photonic band gap; Power supplies; SPICE; Temperature dependence; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on

Print_ISBN

0-7803-8163-7

Type

conf

DOI

10.1109/ICECS.2003.1301963

Filename

1301963