A 1.8-V 4.36-ppm/°C-TC bandgap reference with temperature variation calibration

A bandgap reference generator with a compensation circuit against temperature variation is presented. The bandgap reference generator provides a reference current of 10μA with temperature coefficient (TC) of only 4.36ppm/℃ under temperature range from -40 to 125℃. The chip is fabricated in a 0.18-㎛ standard CMOS process with a 1.8V power supply voltage, and the active die area is 0.008㎟.