1. A 4-Bits Trimmed CMOS Bandgap Reference with an Improved Matching Modeling Design
- Author
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Sergio Bampi, J.P. Martinez Brito, and Hamilton Klimach
- Subjects
Matching (statistics) ,Engineering ,Bandgap voltage reference ,business.industry ,Monte Carlo method ,Electrical engineering ,4-bit ,CMOS ,Hardware_INTEGRATEDCIRCUITS ,Electronic engineering ,Trimming ,business ,Electronic circuit ,Voltage - Abstract
Component tolerances and mismatches due to process variations severely degrade the performance of bandgap reference (BGR) circuits. In this paper, the authors describe the design of a BGR considering the Pelgrom's mismatch model. The main purpose of our methodology is to convey the design to reach a good trade-off between area and mismatch. Implemented in standard 0.35mum CMOS technology, the circuit also includes a straightforward 4-bits trimming circuit to achieve more process variations independence. Its Monte Carlo temperature coefficient average is 40-ppm/degC and the reference output voltage average is 1.230V. The area of the BGR is 400x350mum2 due to our design matching requirements.
- Published
- 2007
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