ZHCSTC7A September   2000  – January 2024 INA114

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  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 接收文档更新通知
    2. 8.2 支持资源
    3. 8.3 Trademarks
    4. 8.4 静电放电警告
    5. 8.5 术语表
  10. Revision History
  11. 10Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • P|8
  • DW|16
散热焊盘机械数据 (封装 | 引脚)
订购信息

Setting the Gain

Gain of the INA114 is set by connecting a single external resistor, RG:

Equation 1. G = 1 + 50   k Ω R G

Figure 6-1 shows commonly used gains and resistor values.

The 50‑kΩ term in Equation 1 comes from the sum of the two internal feedback resistors. These resistors are on-chip metal film resistors which are laser trimmed to accurate absolute values. The accuracy and temperature coefficient of these resistors are included in the gain accuracy and drift specifications of the INA114.

The stability and temperature drift of the external gain setting resistor, RG, also affects gain. The contribution of RG to gain accuracy and drift is directly inferred from the gain Equation 1. Low resistor values required for high gain can make wiring resistance important. Sockets add to the wiring resistance, which contributes additional gain error (possibly an unstable gain error) in gains of approximately 100 or greater.