Abstract

The paper describes a CMOS voltage reference design that uses the temperature dependence of NMOS and PMOS threshold voltages to form a temperature-insensitive reference. No diodes or parasitic bipolar transistors are used. The circuit architecture accommodates a wide range of output voltages. A test chip is fabricated using a 0.5 /spl mu/m CMOS process. The prototype achieves a temperature coefficient of 32 ppm//spl deg/C for a temperature range of -10/spl deg/C to 80/spl deg/C and a supply voltage sensitivity of 10 mV/V.

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