A VDD and Temperature Independent CMOS Voltage Reference Circuit
نویسندگان
چکیده
A pure CMOS threshold voltage reference (VTR) circuit achieves temperature(T) coefficient of 5 μV/°C (T=-60~+100 °C) and supply voltage(VDD) sensitivity of 0.1 mV/V (VDD=3~5 V). The combination of subthreshold current characteristics and different operating modes in n-MOSFETs provides a small voltage and temperature dependence. A feedback scheme from the reference output to gates of n-MOSFETs not only stabilizes the output but also saves the die area.
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