SBAS771D June   2017  – October 2024 AMC1303E0510 , AMC1303E0520 , AMC1303E2510 , AMC1303E2520 , AMC1303M0510 , AMC1303M0520 , AMC1303M2510 , AMC1303M2520

PRODUCTION DATA  

  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
    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: AMC1303x05x
    10. 6.10 Electrical Characteristics: AMC1303x25x
    11. 6.11 Switching Characteristics
    12. 6.12 Timing Diagrams
    13. 6.13 Insulation Characteristics Curves
    14. 6.14 Typical Characteristics
  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 Modulator
      3. 7.3.3 Isolation Channel Signal Transmission
      4. 7.3.4 Digital Output
      5. 7.3.5 Manchester Coding Feature
    4. 7.4 Device Functional Modes
      1. 7.4.1 Fail-Safe Output
      2. 7.4.2 Output Behavior in Case of a Full-Scale Input
  9. 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 Frequency Inverter Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Isolated Voltage Sensing
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
      3. 8.2.3 Best Design Practices
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Device Nomenclature
        1. 9.1.1.1 Isolation Glossary
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.1 Overview

The analog input stage of the AMC1303 is a fully differential amplifier feeding the switched-capacitor input of a second-order, delta-sigma (ΔΣ) modulator stage that digitizes the input signal into a 1-bit output stream. The isolated data output DOUT of the converter provides a stream of digital ones and zeros that is synchronous to the internally-generated clock at the CLKOUT pin (active on AMC1303Mx derivatives only) with a frequency as specified in the Switching Characteristics table. The time average of this serial bit-stream output is proportional to the analog input voltage.

The Functional Block Diagram section shows a detailed block diagram of the AMC1303. The analog input range is tailored to directly accommodate a voltage drop across a shunt resistor used for current sensing. The SiO2-based capacitive isolation barrier supports a high level of magnetic field immunity as described in the ISO72x Digital Isolator Magnetic-Field Immunity application note, available for download at www.ti.com. The extended clock frequency of 20MHz on the AMC1303xxx20 supports faster control loops and higher performance levels compared to the other solutions available on the market.