A Low-Voltage Low-Power Improved Switched-OTA-Based ΣΔ Modulator

CHEN Zheng-tao; ZHANG Zhao-feng; MEI Nian-song; LIN Li

Chinese

您当前的位置：

首页 >

文章列表页 >

A Low-Voltage Low-Power Improved Switched-OTA-Based ΣΔ Modulator

更新时间：2026-09-04

- A Low-Voltage Low-Power Improved Switched-OTA-Based ΣΔ Modulator
- Vol. 34, Issue 9, Pages: 53-57(2017)
- 作者机构：
  
  1. 中国科学院上海高等研究院,上海,201203
  2. 中国科学院大学机构,北京,101408
  3. 中国科学院机构红外成像材料与器件重点实验室,上海,200083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2017
- 稿件说明：
移动端阅览
陈峥涛, 张钊锋, 梅年松, 林莉. 基于改进开关型OTA的低压低功耗ΣΔ调制器[J]. 微电子学与计算机, 2017, 34(9): 53-57.

CHEN Zheng-tao, ZHANG Zhao-feng, MEI Nian-song, et al. A Low-Voltage Low-Power Improved Switched-OTA-Based ΣΔ Modulator[J]. 2017, 34(9): 53-57.
陈峥涛, 张钊锋, 梅年松, 林莉. 基于改进开关型OTA的低压低功耗ΣΔ调制器[J]. 微电子学与计算机, 2017, 34(9): 53-57. DOI：

CHEN Zheng-tao, ZHANG Zhao-feng, MEI Nian-song, et al. A Low-Voltage Low-Power Improved Switched-OTA-Based ΣΔ Modulator[J]. 2017, 34(9): 53-57. DOI：

摘要

设计了一种应用于音频的5阶离散时间单环单比特量化ΣΔ调制器.提出一种改进的开关型AB类运算跨导放大器(OTA) 电路

实现了低电压下积分器的低功耗和高转换速率.OTA仅在半时钟周期工作

有效降低调制器功耗.电路采用TSMC 0.18 m 1P4M标准CMOS工艺实现

后仿真结果表明

无杂散动态范围(SFDR) 和信号噪声失真比(SNDR) 分别达97.6 dB和87.3 dB

调制器版图面积0.4 mm.在1V电源电压下

消耗电流260 A

品质因数(FoM) 达到286 fJ/c-step

实现了低压低功耗高精度的设计目标.

Abstract

A 5-order discrete-time (DT) single-loop single-bit-quantized ΣΔ modulator for audio application was designed.An improved Class-AB switched-OTA was proposed

which made the integrator achieve low power dissipation and high slew rate in low voltage.OTA worked at half of the clock cycle and effectively saved power of the modulator.Post simulation showed that the modulator achieved 97.6-dB SFDR and 87.3-dB SNDR.The total area was 0.4 mm.At 1-V power supply

the modulator consumed 260 A current and the FoM was 286 fJ/c-step

which achieved the low-voltage low-power high-accuracy design target.

关键词

Keywords

references

Yang Z, Yao L, Lian Y. A 0.5-V 35-W 85-dB DR double-sampled modulator for audio applications[J]. IEEE Journal of Solid-State Circuits, 2012, 47(3): 722-735. DOI: 722

Dessouky M, Kaiser A. Very low-voltage digital-audioΔΣmodulator with 88-dB dynamic range using local switch bootstrapping[J]. IEEE Journal of Solid-State Circuits, 2001, 36(3): 349-355. DOI: 349

拉扎维, 贵灿, 瑞智, 等. 模拟CMOS集成电路设计: Design of analog CMOS integrated circuits[M]. 西安: 西安交通大学出版社, 2003.

Park H, Nam K Y, Su D K, et al. A 0.7-V 870-μW digital-audio CMOS sigma-delta modulator[J]. IEEE Journal of Solid-State Circuits, 2009, 44(4): 1078-1088. DOI: 1078

Jinchen Z, Menglian Z, Xiaobo W, et al. A 0.9-V switched-opamp-based delta-sigma ADC with dual cycle shift DWA[J]. Journal of Semiconductors, 2013, 34(6): 065004. DOI: 065004

Roh J, Byun S, Choi Y, et al. A 0.9-V 60-μW 1-bit fourth-order delta-sigma modulator with 83-dB dynamic range[J]. IEEE Journal of Solid-State Circuits, 2008, 43(2): 361-370. DOI: 361

Kim M G, Ahn G C, Hanumolu P K, et al. A 0.9V92dB double-sampled switched-RC delta-sigma audio ADC[J]. IEEE Journal of Solid-State Circuits, 2008, 43(5): 1195-1206. DOI: 1195

Peluso V, Vancorenland P, Marques A M, et al. A900-mV low-powerΔΣA/D converter with 77-dB dynamic range[J]. IEEE Journal of Solid-State Circuits, 1998, 33(12): 1887-1897. DOI: 1887

Chae Y, Han G. Low voltage, low power, inverterbased switched-capacitor delta-sigma modulator[J]. IEEE Journal of Solid-State Circuits, 2009, 44(2): 458-472. DOI: 458

Piscataway, NJ Schreier R, Temes G C. Understanding delta-sigma data converters[M]. Piscataway, NJ: IEEE press, 2005.

Kuo C H, Shi D Y, Chang K S. A low-voltage fourthorder cascade delta-sigma modulator in 0.18-CMOS[J]. IEEE Transactions on Circuits and Systems Ⅰ: Regular Papers, 2010, 57(9): 2450-2461. DOI: 2450

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Design of a high accuracy CMOS temperature sensor

Steganography model guided by attention mechanism and improved dense convolution

A high-efficiency charge pump for ultra-low voltage boost systems

Implementation and verification of a dual-chain power gating strategy for low power design

A feature-oriented context understanding and slice analysis network for tuberculosis detection

Related Author

CHEN Gui-bao

GUO Zhong-jie

LI Ting

WEI Hai-long

Related Institution

Xi'an Microelectronics Technology Institute

College of Automation and Information Engineering, Xi'an University of Technology

AI问答

Postal code：100079
Tel：（010）53879206 Email：tmw@bjxintong.com.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09082226号-64 京公网安备11010602201714号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰