CMOS inverter-based voltage and current references in short channel technologies

K R Raghunandan,T R Viswanathan

doi:10.1109/dcas.2014.6965322

CMOS inverter-based voltage and current references in short channel technologies

K R Raghunandan, T R Viswanathan

https://doi.org/10.1109/dcas.2014.6965322

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Publication Date: Oct 1, 2014

Affiliation: The University of Texas at Austin

#Voltage References #Current References + Show 8 more

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Abstract

This paper presents the design of voltage and current references in short channel CMOS technologies operating with Low Supply Voltages (<; 1.2V). The objective is to design simple circuits having good Power Supply Rejection (PSR) with minimal power consumption and area which are easy to re-use. The references are based on class AB CMOS inverters and current mirrors. A voltage reference is obtained as a scaled sum of two diode voltages carrying different current densities so that it is equal to a fraction of the bandgap voltage of silicon. The current reference is obtained by calibrating a simple current source using the bandgap voltage and a switched capacitor conductance clocked by the system clock.

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