A Programmable Clock Generator that Uses Noise Shaping and Its Application in Switched-Capacitor Filters(Special Issue on the 1994 VLSI Circuits Symposium)
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概要
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A programmable digital clock generator that produces a wide range of clock frequencies with fine resolution is described. The clock generator consists of a noise-shaping control loop and a number-controlled oscillator. The generated clock has a time-varying period. When this clock is used as the sampling clock in a switched-capacitor filter (SCF) to set its frequency response, the time-varying period causes nonuniform sampling, which is acceptable under certain conditions that are described. Measured performance of a 2-μm CMOS implementation of the clock generator is presented. Also, measured data for the clock generator driving two SCF's are reported.
- 一般社団法人電子情報通信学会の論文
- 1995-06-25
著者
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Hurst Paul
Department Of Electrical And Computer Engineering University Of California At Davis
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Rothenberg Bret
University of California at Davis