A Sub-0.6V,34.8nW,4.6ppm/°C CMOS Voltage Reference using Subthreshold and Body Effect Techniques

摘要

An ultra low-voltage and low-power CMOS voltage reference was proposed in this paper. Subthreshold and body effect techniques are used to achieve temperature compensation. No resistor and BJT are used in this structure. The proposed circuit has been simulated with Charted 0.18-μm standard CMOS process. The simulated results show that the voltage reference can operate with sub-0.6V supply and total supply current is 60nA at 0.58V supply at room temperature. The temperature coefficient of the output voltage is 4.6ppm/°C, in a range from -40°C to 85°C.