SBASAW1A September   2023  – December 2023 AMC21C12

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 
    5. 5.5 Package Characteristics
    6. 5.6 Electrical Characteristics
    7. 5.7 Switching Characteristics 
    8. 5.8 Timing Diagrams
    9. 5.9 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 Reference Input
      3. 6.3.3 Isolation Channel Signal Transmission
      4. 6.3.4 Open-Drain Digital Output
        1. 6.3.4.1 Transparent Output Mode
        2. 6.3.4.2 Latch Output Mode
      5. 6.3.5 Power-Up and Power-Down Behavior
      6. 6.3.6 VDD1 Brownout and Power-Loss Behavior
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Overcurrent Detection
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Overvoltage Detection
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
    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

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DEN|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.2.1.3 Application Curves

Figure 7-2 shows the typical response of the AMC21C12 to a bipolar, triangular input waveform with an amplitude of 720 mVPP. The output (OUT) switches when VIN crosses the ±250-mV level determined by the REF pin voltage that is biased to 250 mV in this example.

GUID-20220707-SS0I-ZDJK-454W-ZS4SCB8KFFS8-low.svg Figure 7-2 Output Response of the AMC21C12 to a Triangular Input Waveform

The integrated LDO of the AMC21C12 greatly relaxes the power-supply requirements on the high-voltage side and allows powering the device from non-regulated transformer, charge pump, and bootstrap supplies. As given by the following images, the internal LDO provides a stable operating voltage to the internal circuitry, allowing the trip thresholds to remain mostly undisturbed even at ripple voltages of 2 VPP and higher.

GUID-20220705-SS0I-XGNK-PSF3-VRMNBDZ99GRF-low.svgFigure 7-3 Trip Threshold Sensitivity to VDD1 Ripple Voltage (Cmp0, fRIPPLE = 10 kHz)
GUID-20220705-SS0I-WVZB-MMZ4-1BLWGKCGFWLK-low.svgFigure 7-4 Trip Threshold Sensitivity to VDD1 Ripple Voltage (Cmp1, fRIPPLE = 10 kHz)