Low power sensor for temperature compensation in molecular biosensing

D. Venuto
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Abstract

A low power smart temperature sensor followed by an SC amplifier and a 12bit Successive-Approximation analogue-digital converter (ADC) to compensate temperature deviation in drug electrochemical detection, is here presented. The proposed design is accurate within 0.1°C over the temperature range of -55°C to 125°C. A PTAT voltage is used for temperature monitoring. The succeeding ADC digitizes the output with a bit-clock of 50-kHz. The ADC has a Figure-of-Merit of 66 fJ/conversion-step. The system is implemented in an NXP CMOS 0.14μm technology. The die area is 0.21 mm2 and the whole system consumes less than 16μW for 1.2V of voltage supply.
分子生物传感中用于温度补偿的低功耗传感器
本文介绍了一种低功耗智能温度传感器,该传感器采用SC放大器和12位连续逼近模数转换器(ADC)来补偿药物电化学检测中的温度偏差。在-55°C至125°C的温度范围内,所提出的设计在0.1°C内精确。PTAT电压用于温度监测。随后的ADC用50 khz的位时钟对输出进行数字化。ADC的优值为66 fJ/转换步长。该系统采用NXP CMOS 0.14μm工艺实现。芯片面积为0.21 mm2,在1.2V电压下,整个系统功耗小于16μW。
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