SLVUDA2 July   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8.   General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  9. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Test Points
    3. 2.3 Setup
      1. 2.3.1 Reference Voltage
        1. 2.3.1.1 Configuration 1: REFA and REFB = GND
        2. 2.3.1.2 Configuration 2: OPA CH A Bias REFA and REFB
        3. 2.3.1.3 Configuration 3: REFA and REFB Bias Independently
      2. 2.3.2 Current Sensing
      3. 2.3.3 Input Filtering
      4. 2.3.4 Output Load
    4. 2.4 Best Practices
  10. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  11. 4Additional Information
    1. 4.1 Trademarks
    2. 4.2 Related Documentation

1.4 Device Information

The INA1H94-SP is a radiation-hardened precision unity-gain difference amplifier with very high input common-mode voltage range. The device is a single, monolithic device that consists of a precision op amp and an integrated thin-film resistor network. The INA1H94 can accurately measure small differential voltages in the presence of common-mode signals up to ±150V.

The INA1H94-SP is offered in HKX-8 package and available in QML Class V (QMLV) or engineering sample (EM) version. Figure 1-1 shows a simplified block diagram. More device information can be found in the INA1H94-SP Radiation-Hardened, High Common-Mode Voltage Difference Amplifier data sheet.

INA1H94EVM INA1H94 Simplified Application Figure 1-1 INA1H94 Simplified Application