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We developed a 10.7 MHz intermediate frequency bandpass discrete-time 4th-order 4-bit DeltaSigma modulator for AM/FM car radio tuners. Using direct feed-forward compensation and double sampling, we have achieved a dynamic range (DR) of 112 dB in the 3 kHz AM bandwidth (BW) and a DR of 94 dB in the 200 kHz FM BW. The modulator occupies 3 mm2, in 0.15 mum CMOS technology, and draws 63 mA of current.
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Yamamoto et al. (2008) studied this question.
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