THE IMPLEMENTATION of high-performance data acquisition systems in CMOS technology requires precision temperaturestable reference voltage sources compatible with CMOS. While bandgap references have. reached a high degree of development in bipolar technology1, CMOS implementations exhibit additional error sources such as opamp offset, resistor temperature coefficient, and the finite current gain and the base resistance of substrate bipolar transistors native to CMOS. This paper will describe a circuit approach…
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