Paper
A 5.8ppm/°C Bandgap Reference with a Preregulator
- Authors:
- Feiyan Mu; Mingying Du; Jie Lin
- Abstract
- To reduce the temperature draft of accurate analog to digital converters, a voltage reference introduced in 0.5μm BiCMOS technology in this paper. With curvature compensation, a low offset operational amplifier and a temperaturecompensated preregulator, the temperature coefficient of the reference is reduced to 5.8ppm/°C and the operating temperature range is extended to between ?55°C and +125°C. Moreover, the reference’s PSRR at DC is 92dB, revealing a good power supply rejection of the circuit.
- Keywords
- bandgap reference; curvature compensation; low offset; preregulator; BiCMOS
- StartPage
- 95
- EndPage
- 99
- Doi