Low-power bandgap references featuring DTMOST's

This paper describes two CMOS bandgap reference circuits featuring dynamic-threshold MOS transistors. The first bandgap reference circuit aims at application in low-voltage, low-power IC's that tolerate medium accuracy. The circuit runs at supply voltages down to 0.85 V while consuming only 1 mu W; the die area is 0.063 mm(2) in a standard digital 0.35-mu m CMOS process. The second bandgap reference circuit aims at high-accuracy operation (sigma = 0.3%) without trimming. It consumes approximately 5 mu W from a 1.8-V supply voltage and occupies 0.06 mm(2) in a standard 0.35-mu m CMOS process.