A low voltage auto-reconfigured power-on-reset/bandgap reference circuit

Author

Lee, Edward K. F.

Author_Institution

Alfred Mann Found., Santa Clarita, CA, USA

fYear

2014

fDate

1-5 June 2014

Firstpage

918

Lastpage

921

Abstract

In this paper, a low voltage auto-reconfigured power-on-reset/bandgap reference circuit is proposed. During initial power up, the circuit utilizes a transconuductor and a bandgap core to detect the power-up supply voltage level (V_TPU) precisely with minimum temperature and process dependence. No precise reference voltage is required. After a power-up signal is issued, the circuit is reconfigured into a bandgap circuit with a precise reference output voltage (V_ref) for the use of other circuits. Based on a 0.18μm CMOS process, a V_TPU of 999.5mV with variations within +0.18% and -0.15% for different process corners and temperatures (-20°C to +120°C) was obtained. After power up, a V_ref of 599.4mV with variations within +0.15% and -0.46% was achieved.

Keywords

CMOS integrated circuits; energy gap; reference circuits; CMOS process; VTPU; bandgap circuit; bandgap core; bandgap reference circuit; initial power up; low voltage auto-reconfigured power-on-reset; power-up signal; power-up supply voltage level; reference output voltage; size 0.18 mum; transconductor; voltage 599.4 mV; voltage 999.5 mV; CMOS process; Impedance; Low voltage; Photonic band gap; Resistors; Threshold voltage; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2014 IEEE International Symposium on

Conference_Location

Melbourne VIC

Print_ISBN

978-1-4799-3431-7

Type

conf

DOI

10.1109/ISCAS.2014.6865286

Filename

6865286