Guruprasad, . and Kumara, Shama (2020) A 167.18 ppm/°C Temperature Coefficient, Area Efficient Voltage Reference Using Only MOS Transistors. Serbian Journal of Electrical Engineering, 17 (1). pp. 31-40. ISSN 1451-4869

PDF 8479.pdf - Published Version Restricted to Registered users only Download (732kB) | Request a copy

Abstract

In this paper, design of a voltage reference circuit using only MOS transistors and without employing an operational amplifier is presented. A proportional to absolute temperature [PTAT] voltage and a PTAT current are designed then difference of the PTAT voltage and product of the PTAT current and resistor gives the temperature independent voltage. The advantages of both sub-threshold and strong inversion region operation of MOS transistors are exploited in the design. The voltage reference is implemented using standardCMOS 180 nm technology. The voltage reference provides a voltage of 224.3 mV consuming a quiescent current of 30 μA at room temperature. Post layout simulation results show that the proposed voltage reference has a temperature coefficient of 167.18 ppm/°C and varies only 3mV when there is a ±10% variation in supply voltage. The circuit occupies an area of only 93.6×32.6μm on the chip, making it suitable for area constraint applications

Actions (login required)

View Item