CMRR in Voltage-Op-Amp-Based Current-Mode Instrumentation Amplifiers (CMIA)

被引：18
|
作者：
Azhari, Seyed Javad [1 ]
Fazlalipoor, Hossein [2 ]
机构：
[1] Iran Univ Sci & Technol, Electron Res Ctr, Tehran 16844, Iran
[2] Azad Univ Ahar, Ahar 54516, Iran
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2009年 / 58卷 / 03期
关键词：
Common-mode rejection ratio (CMRR); current-mode instrumentation amplifier (CMIA); gain bandwidth of CMIA; voltage op-amp (VOA)-based CMIA; REJECTION RATIO;
D O I：
10.1109/TIM.2008.2005559
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：
The common-mode rejection ratio (CMRR) of a power-supply current-sensing current-mode instrumentation amplifier (CMIA) has theoretically been analyzed and formulated. The theory was further investigated by doing experiments using mu A741 and TL071 as op-amps and CA3096 transistors as the current mirrors of the CMIA. Both theoretical and practical investigations proved that both the do and ac performances of CMRR depend on the matching status of parameters such as CMRR, open-loop gain A, gain-bandwidth product GB, and the output resistance R-O of the input op-amps of the CMIA. It has also been shown that, in the CMIA, unlike the voltage-mode instrumentation amplifier, voltage gain is independent of the bandwidth.
引用
收藏
页码：563 / 569
页数：7
相关论文
共 50 条
  • [41] OP AMP PROVIDES A CURRENT AND VOLTAGE SOURCE
    WAYNE, S
    EDN, 1986, 31 (24) : 240 - 240
  • [42] Current-Mode Amp Powers 2.4 GHz
    Du, Sichun
    Yin, Hongxia
    Huang, Wenbin
    Wang, Christine W.
    MICROWAVES & RF, 2013, 52 (05) : 104 - +
  • [43] OP AMP PROVIDES A CURRENT AND VOLTAGE SOURCE
    WAYNE, S
    EDN, 1989, 34 (4A) : 69 - 69
  • [44] Current-mode universal filter using current feedback amplifiers
    Shah, NA
    Rather, MF
    Iqbal, SZ
    INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 2004, 42 (05) : 375 - 377
  • [45] Synthesis of current-mode and voltage-to-current-mode circuits
    Lata, ZJ
    Aronhime, PB
    PROCEEDINGS OF THE 39TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS I-III, 1996, : 367 - 370
  • [46] Improved current-feedback op-amp with good DC and CMRR performance
    Hayatleh, K
    Su, WJ
    Lidgey, FJ
    ISCAS '99: PROCEEDINGS OF THE 1999 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 2: ANALOG AND DIGITAL CIRCUITS, 1999, : 263 - 266
  • [47] High-order current-mode filters based on current differencing buffered amplifiers
    Hwang, Yuh-Shyan
    Huang, Zhao-Hong
    Chen, Jiann-Jong
    Lee, Wen-Ta
    2007 INTERNATIONAL CONFERENCE ON COMMUNICATIONS, CIRCUITS AND SYSTEMS PROCEEDINGS, VOLS 1 AND 2: VOL 1: COMMUNICATION THEORY AND SYSTEMS; VOL 2: SIGNAL PROCESSING, COMPUTATIONAL INTELLIGENCE, CIRCUITS AND SYSTEMS, 2007, : 999 - +
  • [48] Instrumentation amplifiers and voltage controlled current sources for LHC cryogenic instrumentation
    Agapito, JA
    Barradas, NP
    Cardeira, FM
    Casas, J
    Fernandes, AP
    Franco, FJ
    Gomes, P
    Goncalves, IC
    Cachero, AH
    Lozano, J
    Martin, MA
    Marques, JG
    Paz, A
    Prata, MJ
    Ramalho, AJG
    Ruiz, MAR
    Santos, JP
    Vieira, A
    PROCEEDINGS OF THE SIXTH WORKSHOP ON ELECTRONICS FOR LHC EXPERIMENTS, 2000, 2000 (10): : 275 - 279
  • [49] Universal voltage- and current-mode OTAs based biquads
    Wu, J
    El-Masry, EI
    INTERNATIONAL JOURNAL OF ELECTRONICS, 1998, 85 (05) : 553 - 560
  • [50] Improved current-feedback op-amp with good DC and CMRR performance
    Hayatleh, K.
    Su, W.J.
    Lidgey, F.J.
    Proceedings - IEEE International Symposium on Circuits and Systems, 1999, 2
12345