This paper exploits the CMOS beta multiplier circuit to synthesize a temperature independent voltage reference suitable for low voltage and ultra-low power bio-medical applications. The technique presented here uses only MOS transistors to generate PTAT and CTAT currents. A selfbiasing technique has been used to minimize the temperature and power supply dependency. A prototype in 65nm CMOS has been developed and occupies 0.0039mm, and at room temperature it generates a 204mV reference voltage with 1.3mV drift over a wide temperature range (from -40 to 1250C). This has been designed to operate with a power supply voltage down to 0.6V and consumes 1.8uA current from the supply. The simulated temperature coefficient is 40ppm/0C.
Nagulapalli, RajasekharHayatleh, KhaledBarker, SteveRaparthy, SumathiYassine, NabilLidgey, John
Faculty of Technology, Design and Environment\Department of Computing and Communication Technologies
Year of publication: 2017Date of RADAR deposit: 2017-12-19
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