A 14-bit Bandpass Mash Sigma-delta Pipeline A/d Converter
نویسندگان
چکیده
In this paper a two stage bandpass MASH (multi-stage noise shaping) sigma-delta ( Σ∆ ) modulator is presented. A resolution of 14 bits has been achieved over a 5 MHz band around an intermediate frequency (IF) of 20 MHz with a clock frequency of 80 MHz. This performance is obtained using a 6-th order bandpass Σ∆ modulator followed by a 10 bit pipeline converter. The proposed circuit has been extensively simulated, both at behavioral and at circuit level, and results are illustrated.
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An 80-MHz, 14-bit bandpass mash sigma–delta/pipeline A/D converter with 5 MHz bandwidth for third generation mobile communication systems
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