SBOSAN5 December   2025 INA1H94-SEP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information: INA1H94-SEP
    5. 5.5 Electrical Characteristics: VS = ±9V
    6. 5.6 Electrical Characteristics: V+ = 5V and V– = 0V
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Common-Mode Range
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 SAR ADC 12B, 8-Channel Battery Cell Voltage Monitor
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Documentation Support
        1. 8.1.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

3 Description

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

In many applications where galvanic isolation in not required, the INA1H94-SEP can replace isolation amplifiers. The INA1H94-SEP can help eliminate costly isolated input side power supplies, along with the associated ripple, noise, and quiescent current. The excellent 0.0005% typical nonlinearity, high common-mode, and 500kHz bandwidth of the INA1H94-SEP makes for a compelling sensor readout device.

Device Information
PART NUMBERPACKAGE(1)BODY SIZE
INA1H94-SEPD (SOIC, 8)4.90mm × 3.91mm
(1) For all available packages, see Mechanical, Packaging, and Orderable Information.

INA1H94-SEP Simplified Battery Cell Monitoring Application
Simplified Battery Cell Monitoring Application