SLLSFO4D December   2022  – August 2025 ISOM8710 , ISOM8711

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    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  Power Ratings
    6. 6.6  Insulation Specifications
    7. 6.7  Safety-Related Certifications
    8. 6.8  Safety Limiting Values
    9. 6.9  Electrical Characteristics—DC 
    10. 6.10 Switching Characteristics, ISOM8710
    11. 6.11 Switching Characteristics, ISOM8711
    12. 6.12 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Sizing RIN
        2. 9.2.2.2 Driving the Input with a Buffer
        3. 9.2.2.3 Calculating RL for ISOM8711
      3. 9.2.3 Application Curves
      4. 9.2.4 Insulation Lifetime
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

9.1 Application Information

The ISOM871x devices are single-channel opto-emulators with diode-emulator inputs and digital outputs. The devices use on-off keying modulation to transmit data across the isolation barrier. Since an isolation barrier separates the two sides of these devices, each side can be sourced independently with voltages and currents within recommended operating conditions. As an example, supplying the ISOM871x VCC pin with 3.3V (which is within the 2.7V to 5.5V range for VCC) and driving the diode-emulator input with 5mA (which is also within the 2mA to 20mA range for IF) is possible.

The opto-emulator can also be used as a current-to-voltage translator or voltage level-translator in addition to providing isolation. Opto-emulators do not conform to any specific interface standard and are intended for isolating single-ended digital signal lines. Isolation devices like ISOM871x are typically placed between a data controller (that is, an MCU or FPGA), and a sensor, data converter, or a line transceiver, regardless of the interface type or standard.