Presentation
A CMOS fully-differential bandpass ΣΔ modulator using switched-current circuits
Author/s | Rosa Utrera, José Manuel de la
![]() ![]() ![]() ![]() ![]() ![]() ![]() Medeiro Hidalgo, Fernando Pérez Verdú, Belén Rodríguez Vázquez, Ángel Benito ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Department | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Date | 1995 |
Published in |
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Abstract | This paper presents a fourth-order bandpass sigma-delta modulator that has been designed using fully-differential switched-current circuits in a 0.8μm CMOS technology. The modulator prototype has been obtained by applying ... This paper presents a fourth-order bandpass sigma-delta modulator that has been designed using fully-differential switched-current circuits in a 0.8μm CMOS technology. The modulator prototype has been obtained by applying a lowpass to bandpass transformation to a second-order lowpass ΣΔ modulator. Specifications are SNR 60dB@2.5Mhz±15Khz, for a clock frequency of 1OMhz. Preliminary results from the fabricated prototype obtains the correct noise shaping up to 2.5Mhz clock frequency. |
Citation | Rosa Utrera, J.M.d.l., Medeiro Hidalgo, F., Pérez Verdú, B. y Rodríguez Vázquez, Á.B. (1995). A CMOS fully-differential bandpass ΣΔ modulator using switched-current circuits. En Proceedings of the 38th Midwest Symposium on Circuits and Systems (744-747), Río de Janeiro, Brasil: Institute of Electrical and Electronics Engineers. |
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