SBASAR4 October   2024 AMC0311D-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  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 (D Package)
    5. 6.5  Thermal Information (DWV Package)
    6. 6.6  Power Ratings
    7. 6.7  Insulation Specifications (Basic Isolation)
    8. 6.8  Insulation Specifications (Reinforced Isolation)
    9. 6.9  Safety-Related Certifications (Basic Isolation)
    10. 6.10 Safety-Related Certifications (Reinforced Isolation)
    11. 6.11 Safety Limiting Values (D Package)
    12. 6.12 Safety Limiting Values (DWV Package)
    13. 6.13 Electrical Characteristics
    14. 6.14 Switching Characteristics
    15. 6.15 Timing Diagram
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Analog Input
      2. 7.3.2 Isolation Channel Signal Transmission
      3. 7.3.3 Analog Output
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Best Design Practices
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Mechanical Data

7.3.3 Analog Output

The AMC0x11D-Q1 provides a differential analog output voltage on the OUTP and OUTN pins that is 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 = VIN = (VINP – VSNSN)

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 7-2, if the input voltage exceeds the VClipping value.

AMC0311D-Q1 AMC0211D-Q1 Input to Output Transfer Curve of the AMC0x11D-Q1 Figure 7-2 Input to Output Transfer Curve of the AMC0x11D-Q1

The AMC0x11D-Q1 output offers a fail-safe feature that simplifies diagnostics on a system level. Figure 7-2 shows the behavior in fail-safe mode, in which the AMC0x11D-Q1 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 AMC0x11D-Q1 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.