SBAS837B August   2018  – April 2020 AMC1035

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Application Example
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. 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 Modulator
      3. 7.3.3 Reference Output
      4. 7.3.4 Clock Input
      5. 7.3.5 Digital Output
      6. 7.3.6 Manchester Coding Feature
    4. 7.4 Device Functional Modes
      1. 7.4.1 Output Behavior in Case of a Full-Scale Input
      2. 7.4.2 Fail-Safe Output
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Digital Filter Usage
    2. 8.2 Typical Applications
      1. 8.2.1 Voltage Sensing
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 IGBT Temperature Sensing
      3. 8.2.3 What to Do and What Not to Do
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 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 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

9 Power Supply Recommendations

For decoupling of the power supply, a 0.1-µF capacitor is recommended to be placed as close to the VDD pin of the AMC1035 as possible, as shown in Figure 48, followed by an additional capacitor in the range of 1 µF to 10 µF.

AMC1035 ai_pwr_bas837.gifFigure 48. Decoupling the AMC1035

Safety considerations or high common-mode voltage levels may require the AMC1035 to be galvanically isolated from other parts of the system. Figure 49 shows an example of a circuit that uses the ISO7721 to isolate the signal path and the SN6501 and a transformer to generate the required isolated power.

AMC1035 ai_pwrSN6501_bas837.gifFigure 49. Galvanic Isolation of the AMC1035

Figure 50 shows an alternative solution that uses the ISOW7821 to isolate the signal path and provide the isolated power supply for the AMC1035.

AMC1035 ai_ISOWATT_bas837.gifFigure 50. Galvanic Isolation of the AMC1035 for PCB Space-Constrained Applications