SBOSAN5A December   2025  – September 2026 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
      2. 6.3.2 Error Sources
    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

6.4 Device Functional Modes

The recommended maximum power supply condition for the INA1H94-SEP is VS = 18V. This is achieved with an 18V single-ended supply, or split ±9V supplies. The minimum power supply condition VS = 4V.

The INA1H94-SEP is a difference amplifier where the maximum input common-mode voltage range and differential input range vary depending on the supply voltages and the reference voltage inputs. See Figure 5-1, Figure 5-2 and Figure 5-3 for common-mode range versus supply voltage for examples with specific REFA and REFB bias conditions. It is recommended to check the linear range of the device by calculation, simulation or the INA1H94-SEP Linear Operation Checker to confirm design compliance with the input common-mode limitations, differential input range and output swing of the device for various REFA and REFB bias configurations. See also Section 6.3.1 for additional information.

Common-mode rejection (CMR) of the INA1H94-SEP depends on the input resistor network, which is laser-trimmed for accurate ratio matching. To maintain high CMR, make sure to have low source impedance driving the two inputs. A 75Ω resistance in series with the input pins +IN and –IN decreases the common-mode rejection ratio (CMRR) from 100dB (typical) to 74dB. Resistance in series with the reference pins also degrades CMR.