A 0.6V and 0.53 mu W Nonius TDC for a Passive UHF RFID Pressure Sensor Tag

作者：Jimenez Irastorza A^*; Beriain A; Sevillano J F; Rebollo I; Berenguer R

来源：IEEE International Conference on RFID-Technologies and Applications (RFID-TA) / Rapidly Emerging International RFID Congress, 2012-11-05 to 2012-11-07.

• Time-to-digital converter
• pressure sensor
• oscillator
• counter
• nonius

This work presents a full passive UHF RFID pressure sensor tag which uses a nonius based TDC capacitive sensor interface. The proposed converter has a fully digital output and allows reducing power consumption while maintaining the required resolution. The nonius based TDC has been designed using TSMC 90nm standard CMOS technology. Post-layout simulations show that the converter presents a 12 bit resolution and 9 effective bits in the time range from 10 mu s to 40 mu s when V-DD varies in the range from 0.55V to 0.7V and temperature variations in the range from 0 degrees C to 60 degrees C are considered. The maximum measurement time is 49.9 mu s and the average power consumption of the converter is 0.53 mu W at 10 samples per second from a 0.6V voltage supply.

• 出版日期2012