Title :
A low supply-dependence fully-MOSFET voltage reference for low-voltage and low-power
Author :
Shu, Jun ; Cai, Min
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou
fDate :
Nov. 30 2008-Dec. 3 2008
Abstract :
A low supply-dependence fully-MOSFET voltage reference for low-voltage and low-power is presented. It compensates for the temperature dependence of a current based on gate-source voltage of a MOSFET operating in subthreshold region with a low supply-dependence PTAT current, and exhibits very low supply-dependence for supply voltage. The SPICE simulation demonstrated that with a power supply voltage of 1.0 V, this circuit exhibits an output voltage of 298 mV with a temperature coefficient of 72.6 ppm/degC in the range from -23degC to 77degC, and extremely low supply-dependence of 20.4 muV/V in the supply voltage range from 1 V to 5 V. The total power supply current is 1.48 muA. Therefore, the proposed circuit would be very suitable for a low-voltage and low-power application in an environment where the temperature and power supply voltage change.
Keywords :
CMOS integrated circuits; SPICE; compensation; integrated circuit design; low-power electronics; reference circuits; MOSFET voltage reference; PTAT current; SPICE simulation; current 1.48 muA; gate-source voltage; low-power comsumption; low-voltage operation; power supply voltage change; subthreshold region; temperature -23 degC to 77 degC; temperature compensation; voltage 1.0 V to 5.0 V; voltage 298 mV; Batteries; CMOS technology; Circuit simulation; Current supplies; Low voltage; MOSFET circuits; Photonic band gap; Power supplies; SPICE; Temperature dependence;
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
DOI :
10.1109/APCCAS.2008.4746110
