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

6.3.1 Analog Input

The positive comparator trips when the input voltage (VIN) rises above the VIT+ threshold that is defined as the reference value plus the internal hysteresis voltage. The positive comparator releases when VIN drops below the VIT– threshold that equals the reference value. The negative comparator trips when VIN drops below the VIT– threshold that is defined as the negative reference value minus the internal hysteresis voltage. The negative comparator releases when VIN rises above the VIT+ threshold that equals the negative reference value.

The difference between VIT+ and VIT– is referred to as the comparator hysteresis and is 4 mV for reference voltages below 450 mV. The integrated hysteresis makes the AMC21C12 less sensitive to input noise and provides stable operation in noisy environments without having to add external positive feedback to create hysteresis. The hysteresis of Cmp0 increases to 25 mV for reference values (VREF) greater than 600 mV. See the Reference InputAnalog InputReference InputReference InputReference Input description for more details.

Figure 6-1 shows a timing diagram of the relationship between hysteresis and switching thresholds.

GUID-20210504-CA0I-PQWN-81XQ-QQ9T1HXMBRJM-low.svg Figure 6-1 Switching Thresholds and Hysteresis