A 0.9-V 60-μW 1-bit fourth-order delta-sigma modulator with 83-dB dynamic range

被引：124

作者：

Roh, Jeongjin ^{[1
]}

Byun, Sanho ^{[2
]}

Choi, Youngkil ^{[1
]}

Roh, HyLingdong ^{[1
]}

Kim, Yi-Gyeong ^{[3
]}

Kwon, Jong-Kee ^{[3
]}

机构：

[1] Hanyang Univ, Dept Elect Engn, Ansan 426791, South Korea

[2] Samsung Elect Corp, Giheung 446711, South Korea

[3] Elect & Telecommun Res Inst, Taejon 305700, South Korea

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2008年 / 43卷 / 02期

关键词：

low power; low voltage; operational transconductance amplifier; sigma-delta modulation; switched capacitator circuits;

D O I：

10.1109/JSSC.2007.914266

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A 0.9-V 60-mu W delta-sigma modulator is designed using standard CMOS 0.13-mu m technology. The modulator achieves 83-dB dynamic range in a signal bandwidth of 20 kHz with a sampling frequency of 2 MHz. The input-feedforward architecture is used to reduce the voltage swing of the integrators, which enables low-power amplifiers. By considering the characteristics of the modulator architecture, low-quiescent operational transconductance amplifiers are designed, which use positive feedback to increase dc gain. The designed modulator shows very high figure of merit among the state-of-the-art sub-I-V modulators.

引用

页码：361 / 370

页数：10

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