A 1.6-nA quiescent current bandgap reference in 130-nm CMOS technology

Abstract

This paper presents an ultra-low quiescent current bandgap reference. The BGR is based on a resistor-less topology to reduce area and current consumption. The proposed design was implemented in TSMC 130-nm CMOS technology. It only consumes 1.6 nA from a 1.8-V supply. The BGR provides about 770-mV reference voltage and has power supply rejection ratio (PSRR) of 57 dB at DC. The temperature coefficient (TC) is 5 ppm/°C from -40 to 125 °C. Process variation and mismatches are kept as low as 1.4% per sigma.