SBASA70 April   2021 AMC3336

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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  Power Ratings
    6. 6.6  Insulation Specifications
    7. 6.7  Safety-Related Certifications
    8. 6.8  Safety Limiting Values
    9. 6.9  Electrical Characteristics
    10. 6.10 Switching Characteristics
    11. 6.11 Timing Diagrams
    12. 6.12 Insulation Characteristics Curves
    13. 6.13 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 Isolation Channel Signal Transmission
      4. 7.3.4 Digital Output
        1. 7.3.4.1 Output Behavior in Case of a Full-Scale Input
        2. 7.3.4.2 Output Behavior in Case of a High-Side Supply Failure
      5. 7.3.5 Isolated DC/DC Converter
      6. 7.3.6 Diagnostic Output
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Digital Filter Usage
    3. 8.3 Typical Application
      1. 8.3.1 Solar Inverter Application
        1. 8.3.1.1 Design Requirements
        2. 8.3.1.2 Detailed Design Procedure
          1. 8.3.1.2.1 Input Filter Design
          2. 8.3.1.2.2 Bitstream Filtering
        3. 8.3.1.3 Application Curve
    4. 8.4 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 Device Support
      1. 11.1.1 Device Nomenclature
        1. 11.1.1.1 Isolation Glossary
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary

7.3.3 Isolation Channel Signal Transmission

The AMC3336 uses an on-off keying (OOK) modulation scheme, as shown in Figure 7-3, to transmit the modulator output bitstream across the SiO2-based isolation barrier. The transmit driver (TX) illustrated in the Section 7.2 transmits an internally generated, high-frequency carrier across the isolation barrier to represent a digital one and does not send a signal to represent a digital zero. The nominal frequency of the carrier used inside the AMC3336 is 480 MHz.

Figure 7-3 shows the concept of the on-off keying scheme.

GUID-20210313-CA0I-HVBT-40RP-44TR045ZJGR2-low.svg Figure 7-3 OOK-Based Modulation Scheme