INSTRUMENTATION AMPLIFIER WITH DIGITAL GAIN PROGRAMMING AND COMMON-MODE REJECTION TRIM

被引：1
|
作者：
VYROUBAL, D
机构：
[1] Jugoturbina-Inst, Karlovac
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1990年 / 39卷 / 04期
关键词：
D O I：
10.1109/19.57238
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 design for an instrumentation amplifier with digitally programmable gain and common-mode rejection (CMR) trim is presented. A standard multiplying D/A converter (DAC) is used as the differential feedback control element, and the common-mode rejection is provided by four resistors in a configuration equivalent to a balanced bridge. Digital CMR adjustment is established after another bridge-balancing DAC has been added to the basic circuit. Detailed circuit analysis proves that excellent offset and drift cancellation follows from the proper pairing of four op amps used in the circuit. Feasibility of amplifier integration into a single chip is also discussed.
引用
收藏
页码：588 / 593
页数：6
相关论文
共 50 条
  • [21] HP-67 FINDS OP AMPS GAIN AND COMMON-MODE REJECTION
    HYMAN, MR
    ELECTRONICS, 1979, 52 (04): : 149 - &
  • [22] On the measurement of common-mode rejection ratio
    Zhou, J
    Liu, J
    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2005, 52 (01) : 49 - 53
  • [23] Common-mode rejection ratio redefined
    Koide, FT
    IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 1997, 46 (03) : 737 - 739
  • [24] A current mode instrumentation amplifier with high common-mode rejection ratio designed using a novel fully differential second-generation current conveyor
    Ahmadi, Soma
    Mahmoudi, Azad
    Maddipatla, Dinesh
    Bazuin, Bradley J. J.
    Azhari, Seyed Javad
    Atashbar, Massood Z. Z.
    SN APPLIED SCIENCES, 2023, 5 (01):
  • [25] A current mode instrumentation amplifier with high common-mode rejection ratio designed using a novel fully differential second-generation current conveyor
    Soma Ahmadi
    Azad Mahmoudi
    Dinesh Maddipatla
    Bradley J. Bazuin
    Seyed Javad Azhari
    Massood Z. Atashbar
    SN Applied Sciences, 2023, 5
  • [26] Low-power variable gain amplifier free of common-mode feedback circuit
    Yang, Xiao
    Qi, Cheng
    Wang, Liang
    Xie, Ying-Hui
    Dianzi Keji Daxue Xuebao/Journal of the University of Electronic Science and Technology of China, 2013, 42 (06): : 857 - 861
  • [27] SIMPLE 2ND-ORDER AMPLIFIER MODEL FOR DIFFERENTIAL AND COMMON-MODE GAIN
    MACK, RJ
    FIDLER, JK
    ELECTRONICS LETTERS, 1976, 12 (06) : 136 - 137
  • [28] Generalized Analysis of Random Common-Mode Rejection Performance of CMOS Current Feedback Instrumentation Amplifiers
    Worapishet, Apisak
    Demosthenous, Andreas
    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2015, 62 (09) : 2137 - 2146
  • [29] ACTIVE POTENTIOMETER TUNES COMMON-MODE REJECTION
    GRAEME, J
    ELECTRONICS, 1982, 55 (13): : 119 - 119
  • [30] COMMON-MODE REJECTION RATIO - 2 DEFINITIONS
    SCHOENFELD, RL
    IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 1970, BM17 (01) : 73 - +
12345