SBOS035B december   1995  – may 2023 INA2128

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Revision History
  6. 5Pin Configuration and Functions
  7. 6Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  8. 7Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Setting The Gain
      2. 7.2.2 Dynamic Performance
      3. 7.2.3 Noise Performance
      4. 7.2.4 Offset Trimming
      5. 7.2.5 Input Bias Current Return Path
      6. 7.2.6 Input Common-Mode Range
      7. 7.2.7 Low-Voltage Operation
      8. 7.2.8 Input Protection
      9. 7.2.9 Channel Crosstalk
  9. 8Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.1 Application Information

Figure 7-1 shows the basic connections required for operation of the INA2128. Applications with noisy or high impedance power supplies may require decoupling capacitors close to the device pins as shown.

The output is referred to the output reference (Ref) terminals (RefA and RefB) which are normally grounded. These must be low-impedance connections to assure good common-mode rejection. A resistance of 8 Ω in series with a Ref pin will cause a typical device to degrade to approximately 80 dB CMR (G = 1).

The INA2128 has separate output sense feedback connections, SenseA and Sense B. These must be connected to their respective output terminals for proper operation. The output sense connection can be used to sense the output voltage directly at the load for best accuracy.