A novel, low voltage, precision CMOS current reference with no external components

A novel, precision current reference with low temperature and supply sensitivity and without any external component has been designed in a 0.18/spl mu/m CMOS mixed-mode process. The circuit is based on a bandgap reference (BGR) voltage and a CMOS circuit like a beta multiplier. The simulation result...

Full description

Saved in:
Bibliographic Details
Main Authors: Dehghani, R., Atarodi, S.M.
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Circuits
CMOS process
CMOS technology
Feedback loop
Low voltage
Operational amplifiers
Photonic band gap
Resistors
Temperature sensors
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel, precision current reference with low temperature and supply sensitivity and without any external component has been designed in a 0.18/spl mu/m CMOS mixed-mode process. The circuit is based on a bandgap reference (BGR) voltage and a CMOS circuit like a beta multiplier. The simulation results show max-to-min fluctuation of about 1% over a temperature range of -20 /spl deg/C to +100 /spl deg/C and supply voltage range of 1.1 V to 2V with /spl plusmn/30% tolerance for all of the used on-chip resistors. The maximum nominal current variation in process corners is less than 3.5%.
DOI:10.1109/ICECS.2003.1302000