ZHCSJN1C September   2000  – September 2022 INA118

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 绝对最大额定值
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 Noise Performance
      2. 8.4.2 Input Common-Mode Range
      3. 8.4.3 Input Protection
  9. 9 应用和实现
    1. 9.1 应用信息
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Setting the Gain
        2. 9.2.2.2 Dynamic Performance
        3. 9.2.2.3 Offset Trimming
        4. 9.2.2.4 Input Bias Current Return Path
      3. 9.2.3 应用曲线
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 Low-Voltage Operation
      2. 9.3.2 Single-Supply Operation
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Development Support
    2. 10.2 接收文档更新通知
    3. 10.3 支持资源
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 术语表
  11. 11Mechanical, Packaging, and Orderable Information

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9.2 Typical Application

Figure 9-1 shows the basic connections required for operation of the INA118. Applications with noisy or high impedance power supplies can require decoupling capacitors close to the device pins, as shown. The output is referred to the output reference (Ref) pin, which is normally grounded. This connection must be low-impedance to maintain good common-mode rejection. A resistance of 12 Ω in series with the Ref pin causes a typical device to degrade to approximately 80-dB CMR (G = 1).

Figure 9-1 depicts an input signal with a 5-mV, 1-kHz signal with a 1-VPP common-mode signal, a condition often observed in process-control systems. Figure 9-2 depicts the output of the INA118 (G = 250) depicting the clean recovered 1-kHz waveform.

Figure 9-1 Basic Connections