An all-CMOS low supply voltage temperature sensor front-end with error correction techniques

Li Lu; Changzhi Li; Jinghong Chen

doi:10.1109/ISCAS.2012.6271942

An all-CMOS low supply voltage temperature sensor front-end with error correction techniques

Li Lu, Changzhi Li, Jinghong Chen

Electrical and Computer Engineering

Research output: Contribution to conference › Paper

1 Scopus citations

Abstract

This paper presents an all-CMOS temperature sensor front-end operating at low supply voltage. The front-end includes a reference voltage generator and a proportional-to-absolute-temperature (PTAT) voltage generator. In order to minimize the errors due to various mismatches, error correction techniques including gain boosting, dynamic element matching, dynamic offset cancellation and clock boosting have been investigated. Detailed analysis and simulation have been presented. Furthermore, experimental results with 0.5 μm implementation demonstrated that the lowest supply voltage is 1.1 V for the reference voltage generator and 1 V for the PTAT voltage generator over the temperature range of 55°C to 125°C with acceptable performance for a CMOS-based temperature sensor front-end. The effectiveness of the error correction techniques are also demonstrated experimentally.

Original language	English
Pages	2973-2976
Number of pages	4
DOIs	https://doi.org/10.1109/ISCAS.2012.6271942
State	Published - 2012
Event	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of Duration: May 20 2012 → May 23 2012

Conference

Conference	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
Country	Korea, Republic of
City	Seoul
Period	05/20/12 → 05/23/12

Access to Document

10.1109/ISCAS.2012.6271942

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title = "An all-CMOS low supply voltage temperature sensor front-end with error correction techniques",

abstract = "This paper presents an all-CMOS temperature sensor front-end operating at low supply voltage. The front-end includes a reference voltage generator and a proportional-to-absolute-temperature (PTAT) voltage generator. In order to minimize the errors due to various mismatches, error correction techniques including gain boosting, dynamic element matching, dynamic offset cancellation and clock boosting have been investigated. Detailed analysis and simulation have been presented. Furthermore, experimental results with 0.5 μm implementation demonstrated that the lowest supply voltage is 1.1 V for the reference voltage generator and 1 V for the PTAT voltage generator over the temperature range of 55°C to 125°C with acceptable performance for a CMOS-based temperature sensor front-end. The effectiveness of the error correction techniques are also demonstrated experimentally.",

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AB - This paper presents an all-CMOS temperature sensor front-end operating at low supply voltage. The front-end includes a reference voltage generator and a proportional-to-absolute-temperature (PTAT) voltage generator. In order to minimize the errors due to various mismatches, error correction techniques including gain boosting, dynamic element matching, dynamic offset cancellation and clock boosting have been investigated. Detailed analysis and simulation have been presented. Furthermore, experimental results with 0.5 μm implementation demonstrated that the lowest supply voltage is 1.1 V for the reference voltage generator and 1 V for the PTAT voltage generator over the temperature range of 55°C to 125°C with acceptable performance for a CMOS-based temperature sensor front-end. The effectiveness of the error correction techniques are also demonstrated experimentally.

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