SBAS562B April   2012  – December 2019 AMC1100

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Descriptions
  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 Insulation Characteristics Curves
    11. 6.11 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 The AMC1100 in Frequency Inverters
        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 The AMC1100 in Energy Metering
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
  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
          1. 11.1.1.1.1 Insulation:
          2. 11.1.1.1.2 Pollution Degree:
          3. 11.1.1.1.3 Installation Category:
    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
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.4 Device Functional Modes

The AMC1100 is powered on when the supplies are connected. The device is operated off a 5-V nominal supply on the high-side. The potential of the ground reference GND1 can be floating, which is usually the case in shunt-based current-measurement applications. TI recommends tying one side of the shunt to the GND1 pin of the AMC1100 to maintain the operating common-mode range requirements of the device.

The low-side of the AMC1100 can be powered from a supply source with a nominal voltage of 3.0 V, 3.3 V, or 5.0 V. When operated at 5 V, the common-mode voltage of the output stage is set to 2.55 V nominal; in both other cases, the common-mode voltage is automatically set to 1.29 V.

Although usually applied in shunt-based current-sensing circuits, the AMC1100 can also be used for isolated voltage measurement applications, as shown in a simplified way in Figure 34. In such applications, usually a resistor divider (R1 and R2 in Figure 34) is used to match the relatively small input voltage range of the AMC1100. R2 and the AMC1100 input resistance (RIN) also create a resistance divider that results in additional gain error. With the assumption that R1 and RIN have a considerably higher value than R2, the resulting total gain error can be estimated using Equation 1:

Equation 1. AMC1100 q_gerrtot_bas542.gif

where

  • GERR = device gain error.
AMC1100 ai_voltage_meas_bas542.gifFigure 34. Voltage Measurement Application