A High Resolution Switched Capacitor 1bit Sigma-Delta Modulator for Low-Voltage/Low-Power Applications

Claus Efdmann Furst

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch


    A high resolution 1bit Sigma-Delta modulator for low power/low voltage applications is presented. The modulator operates at a supply of 1-1.5V, the current drain is 0.1mA. The maximum resolution is 87dB equivalent to 14 bits of resolution. This is achieved with a signal-band of 5kHz, over-sampling ratio (OSR) of 128 and a sampling frequency of 1.28MHz. The very low power consumption is achieved by using a new type of efficient class AB amplifiers in a fully differential configuration. The modulator is implemented in a 0.7 micron n-well CMOS technology. Optimisation details concerning modulator coefficients and bias requirement of amplifiers is described.
    Original languageEnglish
    Title of host publicationProceedings of the 14th NORCHIP Conference
    Place of PublicationCopenhagen
    Publication date1996
    Publication statusPublished - 1996
    Event14th NORCHIP Conference - Helsinki, Finland
    Duration: 4 Nov 19965 Nov 1996


    Conference14th NORCHIP Conference

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