Publication
This paper proposes an interface circuit for wirelessly powered implants for mice temperature monitoring. The circuit contains the read-out circuit and a data converter. By using a novel approach to cancel the non-linear effects of thermistor sensors, the circuit achieves 27dB higher SFDR. The system is designed in UMC CMOS 0.18 mu m technology, which has 200KHz sampling rate, 8-bit resolution, and total power-consumption of 29 mu W. The successive approximation analog-to-digital convertor (SAR ADC) is fabricated. The measurement result shows an Effective Number of Bits (ENOB) of 7.
Jijun He, Xiaowei Zhang, Jian Wu, Ye Tian
Christian Enz, Assim Boukhayma, Antonino Caizzone, Andrea Kraxner, Minhao Yang, Daniel Mathias Bold