一个63-mA 112/94 db DR中频带通ΔΣ调制器，具有直接前馈和双采样

2007 IEEE Custom Integrated Circuits Conference Pub Date : 2007-09-01 DOI:10.1109/CICC.2007.4405681

Takaya Yamamoto, M. Kasahara, T. Matsuura

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引用次数: 3

摘要

我们开发了一个10.7 mhz中频(IF)带通离散时间(DT) 4阶4位ΔΣ调制器，用于AM/FM汽车收音机调谐器。使用直接前馈和双采样，我们在3khz AM带宽(BW)下实现了112 dB的动态范围(DR)，在200 khz FM带宽(BW)下实现了94 dB的DR。该调制器占地3mm2，采用0.15 μm CMOS技术，电流为63ma。

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A 63-mA 112/94-dB DR IF bandpass ΔΣ modulator with direct feed-forward and double sampling

We developed a 10.7-MHz intermediate frequency (IF) bandpass discrete-time (DT) 4^th -order 4-bit ΔΣ modulator for AM/FM car radio tuners. Using direct feed-forward 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 μm CMOS technology, and draws 63 mA of current.

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2007 IEEE Custom Integrated Circuits Conference

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