Low-power bandgap references featuring DTMOSTs

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 ICs that tolerate medium accuracy. The circuit´s accuracy is 2% and it runs at supply voltages down to 0.85V while consuming only 1.2µW; the die area is 0.063mm²in a 0.35µm CMOS process. The second bandgap reference circuit aims at high accuracy operation (0.3%) without trimming. It consumes approximately 5.4µW from a 1.8V supply voltage, and occupies 0.06mm²in a 0.35µm CMOS process.