External oscillator‐less TDC‐based all‐digital temperature sensor

This paper presents a Time‐to‐Digital Converter (TDC)‐based all‐digital temperature sensor with small inaccuracy even at wide temperature range. The proposed sensor utilized CMOS inverters show different temperature characteristics to embed an oscillator that previous sensors have used as external c...

Full description

Saved in:
Bibliographic Details
Published in:Electronics and communications in Japan 2019-05, Vol.102 (5), p.11-18
Main Authors: Shimada, Hideto, Mizuno, Kentaro
Format: Article
Language:English
Subjects:
CMOS
Converters
diode
high‐temperature operation
in‐vehicle sensor
Sensors
temperature sensor
Temperature sensors
Time‐to‐Digital Converter
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents a Time‐to‐Digital Converter (TDC)‐based all‐digital temperature sensor with small inaccuracy even at wide temperature range. The proposed sensor utilized CMOS inverters show different temperature characteristics to embed an oscillator that previous sensors have used as external component. Moreover, the temperature characteristic of a diode is used to improve the temperature inaccuracy. The sensor in 180‐nm CMOS process tested from −40°C to 200°C shows −2.56°C to +2.84°C inaccuracy.
ISSN:1942-9533
1942-9541
DOI:10.1002/ecj.12161