Title :
A floating CMOS bandgap voltage reference for differential applications
Author :
Ferro, Marco ; Salerno, Franco ; Castello, Rinaldo
Author_Institution :
Centro Studi e Lab. Telecommunicazioni, Torino, Italy
fDate :
6/1/1989 12:00:00 AM
Abstract :
The circuit is suitable for precision mixed-mode systems using the differential approach, especially for the case of single-supply operation. An experimental prototype, realized in a 2-μm CMOS technology, generates a continuous-time low-impedance voltage of 2.48 V±24 mV before trimming. The temperature coefficient measured on 30 samples ranges from -20 to L32 p.p.m./°C in the temperature range from 0 to 100°C. Thanks to the differential approach, a high-frequency power supply rejection of -50 dB at 100 kHz was achieved. The active area of the chip is 1800 mil2 and the circuit dissipates 6 mW when operated from a single 5-V supply
Keywords :
CMOS integrated circuits; differential amplifiers; linear integrated circuits; operational amplifiers; reference circuits; 2 micron; 2.48 V; 5 V; 6 mW; CMOS technology; differential applications; floating bandgap voltage-references; linear IC; op amp; precision mixed-mode systems; single-supply operation; Coupling circuits; Digital circuits; Dynamic range; Frequency; Photonic band gap; Power supplies; Silicon; Temperature distribution; Temperature measurement; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
