Accurate DEM SC amplification of small differential voltage signal with CM level from ground to VDD

Guijie Wang; Gerard C. M. Meijer

doi:10.1117/12.388913

21 June 2000 Accurate DEM SC amplification of small differential voltage signal with CM level from ground to VDD

Guijie Wang, Gerard C. M. Meijer

Proceedings Volume 3990, Smart Structures and Materials 2000: Smart Electronics and MEMS; (2000) https://doi.org/10.1117/12.388913
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

In this paper a new DEM amplifier is designed to amplify the small differential voltage signal, which CM level can be from ground to V_DD, using single power supply. Using switched capacitors, the small differential voltage signal can be amplified. In order to eliminate the error caused by the mismatching, dynamic element matching technique has been applied. The simulation result shows that the error caused by mismatching of the capacitors has been significantly reduced to the second order. The DEM SC amplifier has been applied to amplify the thermocouple voltage in an interface circuit for thermocouples.

Citation Download Citation

Guijie Wang and Gerard C. M. Meijer "Accurate DEM SC amplification of small differential voltage signal with CM level from ground to VDD", Proc. SPIE 3990, Smart Structures and Materials 2000: Smart Electronics and MEMS, (21 June 2000); https://doi.org/10.1117/12.388913

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