A very low-power class AB/AB Op-amp based sigma-delta modulator for biomedical applications

被引：2
|
作者：
Lopez-Morillo, E. [1 ]
Carvajal, R. G. [1 ]
ElGimili, H. [1 ]
Ramirez-Angulo, Jaime [2 ]
Lopez-Martin, Antonio [3 ]
Rodriguez-Villegas, E. [4 ]
机构：
[1] Univ Seville, Escuela Super Ingn, Camino Descubrimeintos S-N, Seville 41092, Spain
[2] New Mexico State Univ, Klipsch Sch Elect & Comp Engn, Las Cruces, NM 88003 USA
[3] Univ Publica Navarra, Dept Ingenieria Elect, Pamplona E41007, Spain
[4] Imperial Coll, Dept Elect & Elect Eng, London, England
来源：
IEEE MWSCAS'06: PROCEEDINGS OF THE 2006 49TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL II | 2006年
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1109/MWSCAS.2006.382311
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 Sigma-Delta (Sigma Delta) modulator with 8 bits of resolution and only 330 nW power consumption for a cardiac pacemaker is presented. The overall modulator operates from 2.3V down to 1.5V supply using fully-differential class AB/AB amplifiers with transistors biased in weak inversion. The system has been implemented in a standard 0.5-mu m CMOS process. Post-layout simulations have been performed showing 57 dB of SNR with an oversampling ratio of 32.
引用
收藏
页码：458 / +
页数：2
相关论文
共 50 条
  • [1] A low-power sigma-delta modulator based on high-order op-amp sharing technique for speech communication
    Dong, Siwan
    Ning, Sihao
    Yuan, Menghan
    Wang, Peng
    Yang, Wenju
    [J]. AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS, 2024, 176
  • [2] A low-power, second-order Δ/Σ modulator using a single class-AB op-amp for voice-band applications
    Aminghasem Safarian
    Farzad Sahandiesfanjani
    Payam Heydari
    S. Mojtaba Atarodi
    [J]. Analog Integrated Circuits and Signal Processing, 2006, 49 : 199 - 211
  • [3] A low-power, second-order Δ/Σ modulator using a single class-AB op-amp for voice-band applications
    Safarian, Aminghasem
    Sahandiesfanjani, Farzad
    Heydari, Payam
    Atarodi, S. Mojtaba
    [J]. ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 2006, 49 (02) : 199 - 211
  • [4] A Single Op-Amp 0+2 Sigma-Delta Modulator
    Liu, Yao
    Bonizzoni, Edoardo
    Maloberti, Franco
    [J]. 2015 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), 2015, : 2029 - 2032
  • [5] Ultra low-power low-voltage integrated preamplifier using class-AB OP-Amp for biomedical sensor application
    Putra, Ade
    Teo, T. Hui
    Rajinder, S.
    [J]. 2007 INTERNATIONAL SYMPOSIUM ON INTEGRATED CIRCUITS, VOLS 1 AND 2, 2007, : 216 - 219
  • [6] OP-AMP swing reduction in sigma-delta modulators
    Kwon, S
    Maloberti, F
    [J]. 2004 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 1, PROCEEDINGS, 2004, : 525 - 528
  • [7] A Low-Power Sigma-Delta Modulator for Healthcare and Medical Diagnostic Applications
    Boni, Andrea
    Giuffredi, Luca
    Pietrini, Giorgio
    Ronchi, Marco
    Caselli, Michele
    [J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2022, 69 (01) : 207 - 219
  • [8] A New Op-amp Noise Model for Switched-Capacitor Sigma-Delta Modulator in SIMULINK
    Wu, F.
    Chen, Z. J.
    Zhao, M.
    Xu, D. Y.
    Shen, G. C.
    Lu, W. G.
    Zhang, Y. C.
    [J]. 2014 IEEE INTERNATIONAL CONFERENCE ON ELECTRON DEVICES AND SOLID-STATE CIRCUITS (EDSSC), 2014,
  • [9] A new low-power sigma-delta modulator with the reduced number of op-amps for speech band applications
    Safarian, AQ
    Sahandi, F
    Atarodi, SM
    [J]. PROCEEDINGS OF THE 2003 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL I: ANALOG CIRCUITS AND SIGNAL PROCESSING, 2003, : 1033 - 1036
  • [10] Power efficient fully differential low-voltage two stage class AB/AB OP-AMP architectures
    Thoutam, S
    Ramírez-Angulo, J
    López-Martin, A
    Carvajal, RG
    [J]. 2004 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 1, PROCEEDINGS, 2004, : 733 - 736
12345