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A 69 μW CMOS smart temperature sensor with an inaccuracy of ±0.8°C (3σ) from −50°C to 150°C | IEEE Conference Publication | IEEE Xplore

A 69 μW CMOS smart temperature sensor with an inaccuracy of ±0.8°C (3σ) from −50°C to 150°C


Abstract:

A proposed temperature sensor is based on pure CMOS PTAT circuitry, a preamplifier and a sigma delta ADC capable of simple and efficient temperature sensor conversion to ...Show More

Abstract:

A proposed temperature sensor is based on pure CMOS PTAT circuitry, a preamplifier and a sigma delta ADC capable of simple and efficient temperature sensor conversion to digital value. The designed PTAT circuit utilized temperature compensation technology to enhance the linearity. The temperature sensor, which occupies 0.475 mm2, is fabricated using the TSMC 0.18 μm one-poly six-metal (1P6M) process. Measurement results show that the senor consume 46uA with a 1.5 V supply at 100 sample/s at room temperature. The sensor operates from −50°C to 150°C, archiving a 3σ resolution of ±0.8°C.
Published in: SENSORS, 2012 IEEE
Date of Conference: 28-31 October 2012
Date Added to IEEE Xplore: 17 January 2013
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ISSN Information:

Conference Location: Taipei, Taiwan

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