An All-MOSFET Sub-1-V Voltage Reference With a —51 –dB PSR up to 60 MHz

Abstract

This paper presents a voltage reference (VR) with a power supply rejection (PSR) better than 50 dB for frequencies of up to 60 MHz, and uses MOSFETs in strong inversion. Another innovation is a compact MOSFET low-pass filter, which was developed along with a feedback technique for a wide-bandwidth PSR not achieved in previous works. The proposed all-MOSFET VR was fabricated using a standard 0.18 μm CMOS process. It achieves a minimum temperature coefficient of 6.5 ppm/°C for temperatures from -30 °C to 110 °C. The line regulation is 0.076%/V for a step from 0.8 to 2.2 V supply voltage with 360 nW power consumption at room temperature and an area of 0.0143 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .