SBOU211A October   2018  – July 2025 INA105 , INA106 , INA132 , INA134 , INA137 , INA143 , INA152 , INA154 , INA157 , INA333 , INA592 , INA600

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 General Texas Instruments High Voltage Evaluation (TI HV EMV) User Safety Guidelines
    3. 1.3 Features
    4. 1.4 Diff-amp Pinout
    5. 1.5 Compatible Devices
  7. 2Hardware
    1. 2.1 Power
    2. 2.2 Inputs
    3. 2.3 Output
      1. 2.3.1 Output Filtering
    4. 2.4 Reference
    5. 2.5 Miscellaneous
    6. 2.6 Configurations
      1. 2.6.1 Difference Amplifiers (SOIC-8 and VSSOP-8)
      2. 2.6.2 Difference Amplifiers (SOT23 and SOT-SC70)
      3. 2.6.3 Reference Amplifier
        1. 2.6.3.1 Buffered Reference Voltage Connection
        2. 2.6.3.2 AC Coupled Output
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials (BOM)
  9. 4Additional Information
    1. 4.1 Trademarks
    2. 4.2 Related Documentation
  10. 5Revision History

2.4 Reference

There are multiple methods of applying a reference voltage to the device. The reference voltage is set by J9, which either connects the reference to ground or ties the reference to the output of the reference buffer. The reference buffer is initially configured to generate a rail at mid-supply for single supply operation. Alternatively, this jumper can be left unconnected and the desired voltage can be applied directly to the VREF test point. It is also possible to connect J7 and configure the reference buffer as an integrator to ac couple the output as shown in Figure 2-3.