A low voltage CMOS voltage reference based on partial compensation of MOSFET threshold voltage and mobility using current subtraction

A low voltage CMOS voltage reference based on partial compensation of MOSFET threshold voltage and mobility using current subtraction

A novel scheme for a CMOS low-voltage reference is proposed. It uses current subtraction between the currents generated by two instances of the same current generator circuit, each one configured with different magnitude and temperature coefficients. Temperature stability is achieved owing to the pa...

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Bibliographische Detailangaben
Hauptverfasser: Toledo, L. E., Petrashin, P. A., Lancioni, W. J., Dualibe, F. C., Canali, L. R.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
CMOS integrated circuits
Generators
Low voltage
Resistors
Temperature
Threshold voltage
Transistors
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Beschreibung
Zusammenfassung:A novel scheme for a CMOS low-voltage reference is proposed. It uses current subtraction between the currents generated by two instances of the same current generator circuit, each one configured with different magnitude and temperature coefficients. Temperature stability is achieved owing to the partial compensation of the MOSFET threshold voltage and mobility temperature effects. For a nominal reference voltage of 436.5 mV, SPICE simulation reveals a ±38.2 ppm/°C temperature coefficient within the range of -20 °C to 100°C.
DOI:10.1109/LASCAS.2013.6519024