2006 | OriginalPaper | Chapter
RATIOMETRIC TEMPERATURE MEASUREMENT USING BIPOLAR TRANSISTORS
Authors : Michiel A.P. Pertijs, Johan H. Huijsing
Published in: PRECISION TEMPERATURE SENSORS IN CMOS TECHNOLOGY
Publisher: Springer Netherlands
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The output of a smart temperature sensor is a digital representation of its temperature. This requires a
ratiometric
temperature measurement: the ratio of a temperature-dependent voltage and a reference voltage is determined using an analog-to-digital converter. This chapter describes how substrate bipolar transistors in CMOS technology can be used to accurately generate these voltages.