a low supply voltage high psrr voltage reference in cmos process586 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 30, NO. 5, MAY 1995 Brief Papers A Low Supply Voltage High PSRR Voltage Reference in CMOS Process Khong-Meng Tham and Krishnaswamy Nagaraj Abstract― This paper describes a bandgap voltage reference circuit that operates with a 3 V power supply and is compatible with a digital CMOS process. The use of a simple circuit topology results in a small silicon area of 0.07 mm2 ; a power consumption of 1 mW and a high power supply rejection over a wide frequency band. The circuit realizes a temperature coefcient of 85 ppm/ C and a standard deviation of 20 mV without trimming. I. INTRODUCTION HERE is a growing trend of designing precision analog circuits working off supply voltages in the 3 V range. This trend is driven by the need for battery opera……