This brief presents a 0.9-μW duty-cycle-modulated temperature sensor with a sub-μA peak current for energy harvesteror micro-battery-powered systems. A compact sensing frontend is proposed to achieve low power, together with various device-level leakage and nonlinearity compensation techniques adopted to minimize the sensor error. In addition, a currentstarved multivibrator which provides inherent clamping voltages is used for duty cycle modulation for overall energy savings. The sensor designed in 0.18-μm CMOS process achieves a resolution figure of merit of 10.6 pJ·K², which is among the most energyefficient designs to date. Trimmed at 30 °C, the sensor achieves ±0.85 °C precision from -30 °C to 120 °C. The maximum supply sensitivity is 0.7 °C/V for a 1.6-2 V supply.

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duty cycle modulation clamping voltages supply sensitivity 09ampx03bcw dutycyclemodulated temperature sensor cmos peak current energy harvesteror microbatterypowered systems resolution figure of merit ampx00b0c precision devicelevel leakage and nonlinearity compensation techniques compact sensing frontend currentstarved multivibrator low power

Bo WangMan-Kay LawChi-Ying TsuiAmine Bermak,.A 10.6 pJ·K² Resolution FoM Temperature Sensor Using Astable Multivibrator. 65 (7),869-873.

Bo WangMan-Kay LawChi-Ying TsuiAmine Bermak,"A 10.6 pJ·K² Resolution FoM Temperature Sensor Using Astable Multivibrator" 65

Bo WangMan-Kay LawChi-Ying TsuiAmine Bermak,"A 10.6 pJ·K² Resolution FoM Temperature Sensor Using Astable Multivibrator"