SBASB99 November   2025 AMC1200C

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 (DWV Package)
    5. 5.5  Thermal Information (DUB Package)
    6. 5.6  Power Ratings
    7. 5.7  Insulation Specifications
    8. 5.8  Safety-Related Certifications
    9. 5.9  Safety Limiting Values (DWV Package)
    10. 5.10 Safety Limiting Values (DUB Package)
    11. 5.11 Electrical Characteristics
    12. 5.12 Switching Characteristics
    13. 5.13 Timing Diagram
    14. 5.14 Insulation Characteristics Curves
    15. 5.15 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 Analog Input
      2. 6.3.2 Isolation Channel Signal Transmission
      3. 6.3.3 Analog Output
    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 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Input Filter Design
        2. 7.2.2.2 Differential-to-Single-Ended Output Conversion
      3. 7.2.3 Application Curve
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 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

6.3.3 Analog Output

The AMC1200C provides a differential analog output voltage on the OUTP and OUTN pins proportional to the input voltage. For input voltages in the range from VFSR, MIN to VFSR, MAX, the device has a linear response with an output voltage equal to:

Equation 1. VOUT = VOUTP – VOUTN = 8.0 × VIN = 8.0 × (VINP – VINN)

At zero input, both pins output the same common-mode output voltage VCMout, as specified in the Electrical Characteristics table. For absolute input voltages greater than |VFSR | but less than |VClipping|, the differential output voltage continues to increase in magnitude, but with reduced linearity performance. The outputs saturate at a differential output voltage of VCLIPout, as shown in Figure 6-2, if the input voltage exceeds the VClipping value.

AMC1200C Input to Output Transfer Curve of the AMC1200C Figure 6-2 Input to Output Transfer Curve of the AMC1200C

The AMC1200C output offers a fail-safe feature that simplifies diagnostics on a system level. Figure 6-2 shows the behavior in fail-safe mode, in which the AMC1200C outputs a negative differential output voltage that does not occur under normal operating conditions. The fail-safe output is active:

  • When the high-side supply VDD1 of the AMC1200C device is missing
  • When the high-side supply VDD1 falls below the undervoltage threshold VDD1UV

Use the maximum VFAILSAFE voltage specified in the Electrical Characteristics table as a reference value for fail-safe detection on a system level.