DocumentCode :
1796993
Title :
A CMOS thermistor-embedded continuous-time delta-sigma temperature sensor with a resolution of 0.01 °C
Author :
Chan-Hsiang Weng ; Chun-Kuan Wu ; Tsung-Hsien Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fYear :
2014
fDate :
10-12 Nov. 2014
Firstpage :
149
Lastpage :
152
Abstract :
A thermistor-embedded continuous-time delta-sigma modulator (CTDSM) implementing a temperature sensor (TS) is proposed in this paper. By embedding the resistor-based temperature sensing module into a 2nd-order 1bit CTDSM, the proposed TS achieves high resolution sensing with reduced hardware complexity and power consumption. Furthermore, a resistor-ladder trimming and compensation scheme is proposed to facilitate the 1-point temperature calibration. The proposed TS is fabricated in a 0.18-μm CMOS process. Over a range of -45 °C ~ 125 °C, this TS achieves 0.01 °C rms temperature resolution with a single conversion time of 100 μs.
Keywords :
CMOS integrated circuits; delta-sigma modulation; temperature sensors; thermistors; CMOS thermistor; CTDSM; continuous-time delta-sigma temperature sensor; resistor-based temperature sensing module; resistor-ladder trimming; size 0.18 mum; temperature 0.01 degC; thermistor-embedded continuous-time delta-sigma modulator; time 100 mus; Modulation; Noise; Resistors; Temperature distribution; Temperature measurement; Temperature sensors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference (A-SSCC), 2014 IEEE Asian
Conference_Location :
KaoHsiung
Print_ISBN :
978-1-4799-4090-5
Type :
conf
DOI :
10.1109/ASSCC.2014.7008882
Filename :
7008882
Link To Document :
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