Tunable Bandpass 4th Order SC Sigma-delta Modulator with Novel Structure
نویسندگان
چکیده
منابع مشابه
A 4th-order Bandpass Sigma-delta Modulator
Digital radio receivers must perform the analog-to-digital conversion of bandpass signals. For signals with small relative bandwidths, bandpass XA analog-to-digi ta l converters offer high signal-to-noise ratios at significantly lower sampling rates than are required for lowpass ZA converters, while still providing excellent linearity. A 4thorder bandpass ZA modulator implemented in a 3 pm CMOS...
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Analog-to-digital converters provide a vital interface in mixed-signal electronic systems. One of the typical approaches to implement high-resolution sigma-delta modulators often involves the choice of high-order loop-filters, which imply the use of a large number of integrators. As in common topologies each integrator is implemented by one operational amplifier, high-order modulators can deman...
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frequency 40MHz with 78dB Dynamic Range in a 0.35µm CMOS process. I. INTRODUCTION Oversampling bandpass A/D is widely used because of its increased accuracy and decreased analog front-end circuitries in transceiver systems. High frequency digital processing is more robust than its analog counterpart, and does not have the analog circuit imperfections. Digital IF extraction is also very benefici...
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ژورنال
عنوان ژورنال: The Transactions of The Korean Institute of Electrical Engineers
سال: 2011
ISSN: 1975-8359
DOI: 10.5370/kiee.2011.60.2.446