A 0.0082-mm², 192-nW Single BJT Branch Bandgap Reference in 0.18-μm CMOS

Abstract

In this letter, we propose a bandgap reference (BGR) with a single BJT branch and a PTAT-embedded amplifier with a cascode Miller frequency compensation. As implemented in 0.18-μm CMOS, the proposed BGR occupies a small area of 0.0082 mm2 and low power consumption of 192 nW while achieving voltage spread (σ/μ) of 0.33% and temperature coefficient of 26.3 ppm/°C over -40 °C~140 °C, without any trimming.