SBAS542D April   2011  – July 2015 AMC1200

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 Electrical Characteristics
    6. 6.6 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 Insulation Characteristics
      2. 7.3.2 IEC 61000-4-5 Ratings
      3. 7.3.3 IEC 60664-1 Ratings
      4. 7.3.4 Package Characteristics
      5. 7.3.5 IEC Safety Limiting Values
      6. 7.3.6 Regulatory Information
      7. 7.3.7 Isolation Amplifier
      8. 7.3.8 Analog Input
    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 Motor Control
        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 Isolated Voltage Measurement
  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 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • ±250-mV Input Voltage Range Optimized for Shunt Resistors
  • Very Low Nonlinearity: 0.075% Maximum at 5 V
  • Low Offset Error: 1.5 mV Maximum
  • Low Noise: 3.1 mVRMS Typical
  • Low High-Side Supply Current:
    8 mA Maximum at 5 V
  • Input Bandwidth: 60 kHz Minimum
  • Fixed Gain: 8 (0.5% accuracy)
  • High Common Mode Rejection Ratio: 108 dB
  • 3.3-V Operation on Low-Side
  • Certified Galvanic Isolation:
    • UL1577 and VDE V 0884-10 Approved
    • Isolation Voltage: 4250 VPEAK (AMC1200B)
    • Working Voltage: 1200 VPEAK
    • Transient Immunity: 10 kV/µs Minimum
  • Typical 10-Year Lifespan at Rated Working Voltage (see Application Report SLLA197)
  • Fully Specified Over the Extended Industrial Temperature Range

2 Applications

  • Shunt Resistor Based Current Sensing in:
    • Motor Control
    • Green Energy
    • Frequency Inverters
    • Uninterruptible Power Supplies

3 Description

The AMC1200 and AMC1200B are precision isolation amplifiers with an output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide galvanic isolation of up to 4250 VPEAK (AMC1200B) or 4000 VPEAK (AMC1200) according to UL1577 and VDE V 0884-10. Used in conjunction with isolated power supplies, these devices prevent noise currents on a high common mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry.

The input of the AMC1200 or AMC1200B is optimized for direct connection to shunt resistors or other low voltage level signal sources. The excellent performance of the device supports accurate current control resulting in system-level power saving and, especially in motor-control applications, lower torque ripple. The common mode voltage of the output signal is automatically adjusted to either the 3-V or
5-V low-side supply.

The AMC1200 and AMC1200B are fully specified over the extended industrial temperature range of –40°C to 105°C and are available in a wide-body SOIC-8 package (DWV) and a gullwing-8 package (DUB).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
AMC1200, AMC1200B SOP (8) 9.50 mm × 6.57 mm
SOIC (8) 5.85 mm × 7.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

AMC1200 AMC1200B pg1_typ_app_bas542.gif