JAJSRJ2A September   2000  – January 2024 INA114

PRODUCTION DATA  

  1.   1
  2. 特長
  3. アプリケーション
  4. 概要
  5. Pin Configuration and Functions
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. Application and Implementation
    1. 6.1 Application Information
      1. 6.1.1 Setting the Gain
      2. 6.1.2 Noise Performance
      3. 6.1.3 Offset Trimming
      4. 6.1.4 Input Bias Current Return Path
      5. 6.1.5 Input Common-Mode Range
      6. 6.1.6 Input Protection
      7. 6.1.7 Output Voltage Sense (SOIC-16 Package Only)
  8. Typical Applications
  9. Device and Documentation Support
    1. 8.1 ドキュメントの更新通知を受け取る方法
    2. 8.2 サポート・リソース
    3. 8.3 Trademarks
    4. 8.4 静電気放電に関する注意事項
    5. 8.5 用語集
  10. Revision History
  11. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ(パッケージ|ピン)
  • P|8
  • DW|16
サーマルパッド・メカニカル・データ
発注情報

Input Common-Mode Range

The linear common-mode range of the input op amps of the INA114 is approximately ±13.75V (or 1.25V from the power supplies). As the output voltage increases, however, the linear input range is limited by the output voltage swing of the input amplifiers, A1 and A2. The common-mode range is related to the output voltage of the complete amplifier—see typical characteristic curve Input Common-Mode Range vs Output Voltage.

A combination of common-mode and differential input signals can cause the output of A1 or A2 to saturate. Figure 6-4 shows the output voltage swing of A1 and A2 expressed in terms of a common-mode and differential input voltages. Output swing capability of these internal amplifiers is the same as the output amplifier, A3. For applications where input common-mode range must be maximized, limit the output voltage swing by connecting the INA114 in a lower gain (see performance curve Input Common-Mode Voltage Range vs Output Voltage). If necessary, add gain after the INA114 to increase the voltage swing.

GUID-387CD1B7-5AA3-426D-A190-5511C593A949-low.png Figure 6-4 Voltage Swing of A1 and A2

Input overload often produces an output voltage that appears normal. For example, an input voltage of 20V on one input and 40V on the other input obviously exceeds the linear common-mode range of both input amplifiers. Both input amplifiers are saturated to nearly the same output voltage limit; therefore, the difference voltage measured by the output amplifier is near zero. The output of the INA114 is near 0V even though both inputs are overloaded.