A 100-MHz bandpass sigma-delta modulator with a 75-dB dynamic range for IF receivers

被引：0

作者：

袁宇丹 ^{[1
]}

李立 ^{[1
]}

常虹 ^{[1
]}

郭亚炜 ^{[1
]}

程旭 ^{[1
]}

曾晓洋 ^{[1
]}

机构：

[1] State Key Laboratory of ASIC&System,Fudan University

来源：

Journal of Semiconductors | 2011年 / 32卷 / 02期

基金：

国家高技术研究发展计划(863计划);

关键词：

analog-to-digital converter; bandpass sigma-delta modulator; resonator; IF receiver;

D O I：

暂无

中图分类号：

TN858 [各种频率收音机];

学科分类号：

0810 ; 081001 ;

摘要：

A fourth-order switched-capacitor bandpassΣ△modulator is presented for digital intermediatefrequency (IF) receivers.The circuit operates at a sampling frequency of 100 MHz.The transfer function of the resonator considering nonidealities of the operational amplifier is proposed so as to optimize the performance of resonators.The modulator is implemented in a 0.13-μm standard CMOS process.The measurement shows that the signal-to-noise-and-distortion ratio and dynamic range achieve 68 dB and 75 dB,respectively,over a bandwidth of 200 kHz centered at 25 MHz,and the power dissipation is 8.2 mW at a 1.2 V supply.

引用

页码：73 / 78

页数：6

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