A Low-Power Delta-Sigma Modulator Using a Charge-Pump Integrator

被引：18
|
作者：
Nilchi, Alireza [1 ]
Johns, David A. [1 ]
机构：
[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2013年 / 60卷 / 05期
基金：
加拿大自然科学与工程研究理事会;
关键词：
ADC; charge-pump integrator; chopper-stabilization; delta-sigma modulator; low-power; oversampling; switched-capacitor; thermal noise limited circuits; SWITCHED-CAPACITOR INTEGRATOR; LOW-VOLTAGE; DESIGN;
D O I：
10.1109/TCSI.2012.2220462
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：
In this paper a low-power switched-capacitor integrator based on a capacitive charge-pump (CP) is presented, and its practical effects are discussed. The CP integrator is employed as the first stage of a Delta Sigma ADC. The 0.13 mu m CMOS prototype of the CP based ADC achieves the same performance as a conventional ADC while consuming 66% lower OTA power in the front-end integrator. The CP based modulator realizes 87.8 dB SNDR, 89.2 dB SNR and 90 dB DR over a 10 kHz bandwidth with 148 mu W power consumption. The conventional ADC has similar performance but dissipates 241 mu W. The energy required per conversion-step for the CP based ADC (0.369 pJ/step) is almost 40% lower than that of the conventional ADC (0.607 pJ/step).
引用
收藏
页码：1310 / 1321
页数：12
相关论文
共 50 条
  • [41] Digital modulator with bandpass delta-sigma modulator
    Sommarek, J
    Vankka, J
    Ketola, J
    Lindeberg, J
    Halonen, K
    ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 2005, 43 (01) : 81 - 86
  • [42] A digital modulator with bandpass delta-sigma modulator
    Sommarek, J
    Vankka, J
    Ketola, J
    Lindeberg, J
    Halonen, K
    ESSCIRC 2004: PROCEEDINGS OF THE 30TH EUROPEAN SOLID-STATE CIRCUITS CONFERENCE, 2004, : 159 - 162
  • [43] A 860.8-nW Low-Power Continuous-Time Delta-Sigma Modulator With Switched Resistors for Sensor Applications
    Kim, Jaedo
    Shin, Hwaseong
    Na, Sangwook
    Duan, Quanzhen
    Roh, Jeongjin
    2023 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, ISCAS, 2023,
  • [44] A Low-Power Common-Mode Detector with PVT-Compensation Technique for Dynamic Amplifier in Delta-Sigma Modulator
    Yifu Guo
    Lei Qiu
    Circuits, Systems, and Signal Processing, 2023, 42 : 3795 - 3811
  • [45] A Low-Power Common-Mode Detector with PVT-Compensation Technique for Dynamic Amplifier in Delta-Sigma Modulator
    Guo, Yifu
    Qiu, Lei
    CIRCUITS SYSTEMS AND SIGNAL PROCESSING, 2023, 42 (07) : 3795 - 3811
  • [46] A noise-shaped switching power supply using a delta-sigma modulator
    Dunlap, SK
    Fiez, TS
    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2004, 51 (06) : 1051 - 1061
  • [47] Analysis of a switched-capacitor second-order delta-sigma modulator using integrator multiplexing
    Zierhofer, Clemens M.
    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2006, 53 (08) : 787 - 791
  • [48] New Architectures for Low-Power Delta-Sigma Analog-to-Digital Converter
    Temes, Gabor C.
    2008 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS 2008), VOLS 1-4, 2008, : 1 - 6
  • [49] A Low-Power Delta-Sigma Capacitance-to-Digital Converter for Capacitive Sensors
    Wei, Rongshan
    Wang, Wanjin
    Xiao, Xiaoxia
    Chen, Qunchao
    IEEE ACCESS, 2019, 7 : 78281 - 78288
  • [50] Low power delta-sigma modulator for ADSL applications in a low-voltage CMOS technology
    Safi-Harb, M
    Roberts, GW
    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2005, 52 (10) : 2075 - 2089
12345