Curvature-compensated BiCMOS bandgap with 1-V supply voltage

Author

Malcovati, Piero ; Maloberti, Franco ; Fiocchi, Carlo ; Pruzzi, Marcello

Author_Institution

Dept. of Electr. Eng., Pavia Univ., Italy

Volume

36

Issue

7

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1076

Lastpage

1081

Abstract

We present a bandgap circuit capable of generating a reference voltage of 0.53 V. The circuit, implemented In a submicron BiCMOS technology, operates with a supply voltage of 1 V, consuming 92 μW at room temperature. In the bandgap circuit proposed, we use a nonconventional operational amplifier which achieves virtually zero systematic offset, operating directly from the 1-V power supply. The bandgap architecture used allows a straightforward implementation of the curvature compensation method. The proposed circuit achieves 7.5 ppm/K of temperature coefficient and 212 ppm/V of supply voltage dependence, without requiring additional operational amplifiers or complex circuits for the curvature compensation

Keywords

BiCMOS analogue integrated circuits; error compensation; low-power electronics; operational amplifiers; reference circuits; 0.54 V; 1 V; 92 muW; bandgap architecture; curvature-compensated BiCMOS bandgap; low supply voltage; push-pull circuit; reference voltage generation; room temperature; startup circuit; supply voltage dependence; temperature coefficient; unconventional operational amplifier; virtually zero systematic offset; Analog integrated circuits; BiCMOS integrated circuits; Diodes; Operational amplifiers; Photonic band gap; Power amplifiers; Power supplies; Resistors; Temperature dependence; Threshold voltage;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.933463

Filename

933463