Higher Order Temperature Terms Curvature-Compensated CMOS Bandgap Reference with Lower Output Voltage

H.-Y. Huang and R.-J. Wang (Taiwan)


Bandgap reference, voltage reference, curvature compen sation, and current generator


This work presents a curvature-compensated bandgap reference without resistors in 0.18-µm CMOS technology. The circuit uses a new current generator circuit for higher order temperature terms curvature compensation and a PMOS voltage divider for scaling down the reference voltage. A 605.6mV output voltage is generated with a temperature coefficient of 1 ppm/°C from –40 to 125 °C. It dissipates 77µW at a supply voltage of 1.8-V.

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