SBAS585A September   2012  – January 2016 AMC1200-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configurations 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 Safety Limiting Values
      3. 7.3.3 Package Characteristics
      4. 7.3.4 Regulatory Information
      5. 7.3.5 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 Traction Inverter
        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 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 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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1 Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Temperature Grade 2: –40°C to 105°C
    • HBM ESD Classification Level H2
    • CDM ESD Classification Level C3B
  • ±250-mV Input Voltage Range Optimized for Shunt Resistors
  • Very Low Nonlinearity: 0.075% (max)
    with 5-V High-Side Supply
  • Low Offset Error: 1.5 mV (max)
  • Low Noise: 3.1 mVRMS (typical)
  • Low High-Side Supply Current:
    8 mA (max) at 5 V
  • Input Bandwidth: 60 kHz (min)
  • Fixed Gain: 8 (0.5% accuracy)
  • High Common-Mode Rejection Ratio:
    108 dB (typical)
  • 3.3-V Operation on Low-Side
  • Certified Galvanic Isolation:
    • UL1577 and VDE V 0884-10 Approved
    • Isolation Voltage: 4250 VPEAK
    • Working Voltage: 1200 VPEAK
    • Transient Immunity: 10 kV/µs (min)
  • Typical 10-Year Lifespan at Rated Working Voltage (see Application Report, SLLA197)

2 Applications

  • Isolated Shunt-Resistor-Based Current or Voltage Sensing in:
    • Traction Inverters
    • On-Board Chargers
    • DC-DC Converters
    • Battery Management Systems

3 Description

The AMC1200-Q1 is a precision isolation amplifier with the output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier is certified to provide galvanic isolation of up to 4250 VPEAK according to UL1577 and VDE V 0884-10. Used in conjunction with isolated power supplies, this device prevents 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-Q1 is optimized for direct connection to shunt resistors or other low-voltage level signal sources. The 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-Q1 is available in a wide-body, 8-pin SOIC package (DWV) and a gullwing, 8-pin SOP package (DUB).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
AMC1200-Q1 SOP (8) 9.50 mm × 6.62 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-Q1 pg1_typ_app_sbas585.gif