Aiming at design demand for wireless temperature sensor node which integrates RFID

design a low power consumption integrated temperature sensor

using 0. 18 μm 1P6 M CMOS process

design an integrated temperature sensor with low power consumption. Firstly

it transfers temperature signal to voltage signal

which is then converted to frequency signal by a voltage-controlled oscillator and the frequency signal is finally converted to digital signal by counter. Sensor circuit works in sub-threshold region and employs dynamic threshold-voltage to achieve ultra-low power consumption. Later period test result show that the designed temperature sensor only covers an area of 0. 051 mm2

consumes only 101 n W power with an error- 1. 5

1. 2 ℃

at range of 0

100 ℃.