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  • AMC1304x High-Precision, Reinforced Isolated Delta-Sigma Modulators with LDO

    • SBAS655F September   2014  – January 2020 AMC1304L05 , AMC1304L25 , AMC1304M05 , AMC1304M25

      PRODUCTION DATA.  

  • CONTENTS
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  • AMC1304x High-Precision, Reinforced Isolated Delta-Sigma Modulators with LDO
  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Power Ratings
    6. 7.6  Insulation Specifications
    7. 7.7  Safety-Related Certifications
    8. 7.8  Safety Limiting Values
    9. 7.9  Electrical Characteristics: AMC1304x05
    10. 7.10 Electrical Characteristics: AMC1304x25
    11. 7.11 Switching Characteristics
    12. 7.12 Insulation Characteristics Curves
    13. 7.13 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Analog Input
      2. 8.3.2 Modulator
      3. 8.3.3 Digital Output
    4. 8.4 Device Functional Modes
      1. 8.4.1 Fail-Safe Output
      2. 8.4.2 Output Behavior in Case of a Full-Scale Input
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Digital Filter Usage
    2. 9.2 Typical Applications
      1. 9.2.1 Frequency Inverter Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Isolated Voltage Sensing
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curve
      3. 9.2.3 What To Do and What Not To Do
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Device Nomenclature
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Related Links
    4. 12.4 Receiving Notification of Documentation Updates
    5. 12.5 Community Resources
    6. 12.6 Trademarks
    7. 12.7 Electrostatic Discharge Caution
    8. 12.8 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
  14. IMPORTANT NOTICE
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DATA SHEET

AMC1304x High-Precision, Reinforced Isolated Delta-Sigma Modulators with LDO

1 Features

  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50-mV or ±250-mV input voltage ranges
    • CMOS or LVDS digital interface options
  • Excellent DC performance supporting high-precision sensing on system level:
    • Offset error: ±50 µV or ±100 µV (max)
    • Offset drift: 1.3 µV/°C (max)
    • Gain error: ±0.2% or ±0.3% (max)
    • Gain drift: ±40 ppm/°C (max)
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per
      DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and IEC 62368-1 end equipment standard
  • Transient immunity: 15 kV/µs (min)
  • High electromagnetic field immunity
    (see application note SLLA181A)
  • External 5-MHz to 20-MHz clock input for
    easier system-level synchronization
  • On-chip 18-V LDO regulator
  • Fully specified over the extended industrial temperature range

2 Applications

  • Shunt-resistor-based current sensing in:
    • Industrial motor drives
    • Photovoltaic inverters
    • Uninterruptible power supplies
  • Isolated voltage measurements

3 Description

The AMC1304 is a precision, delta-sigma (ΔΣ) modulator with the output separated from the input circuitry by a capacitive double isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000 VPEAK according to the DIN VDE V 0884-11, UL1577 and CSA standards. Used in conjunction with isolated power supplies, the device prevents noise currents on a high common-mode voltage line from entering the local system ground and interfering with or damaging low voltage circuitry.

The input of the AMC1304 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The unique low input voltage range of the ±50-mV device allows significant reduction of the power dissipation through the shunt while supporting excellent ac and dc performance. By using an appropriate digital filter (that is, as integrated on the TMS320F2807x or TMS320F2837x families) to decimate the bit stream, the device can achieve 16 bits of resolution with a dynamic range of 81 dB (13.2 ENOB) at a data rate of 78 kSPS.

On the high-side, the modulator is supplied by an integrated low-dropout (LDO) regulator that allows an unregulated input voltage between 4 V and 18 V (LDOIN). The isolated digital interface operates from a 3.3-V or 5-V power supply (DVDD).

The AMC1304 is available in a wide-body SOIC-16 (DW) package and is specified from –40°C to +125°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
AMC1304x SOIC (16) 10.30 mm × 7.50 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Device Images

Simplified Schematic

AMC1304L05 AMC1304L25 AMC1304M05 AMC1304M25 ai_sch_bas655.gif

4 Revision History

Changes from E Revision (January 2017) to F Revision

  • VDE standard revision from DIN V VDE V 0884-10 to DIN VDE V 0884-11 throughout documentGo
  • Changed IEC 60950-1 and IEC 60065 to IEC 62368-1 in CAN/CSA no. 5A-component acceptance service notice Features bulletGo
  • Changed VDE standard revision from DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 to DIN VDE V 0884-11: 2017-01 in Insulation Specifications tableGo
  • Changed VDE certificate details in Safety-Related Certifications tableGo
  • Deleted last sentence from condition statement of Safety Limiting Values tableGo
  • Changed footnote in Safety Limiting Values table and deleted paragraph after this table Go

Changes from D Revision (August 2016) to E Revision

  • Changed V(ESD) for Human-body model (HBM) from ±2000 V to ±2500 VGo
  • Changed 1G and 10G to 1M and 10M, respectively, in Quantization Noise Shaping figureGo

Changes from C Revision (September 2015) to D Revision

  • Changed Features section: deleted Certified Isolation Barrier bullet, added Safety-Related Certifications and Transient Immunity bulletsGo
  • Changed Simplified SchematicGo
  • Changed Specifications section to comply with ISO data sheet format Go
  • Changed Maximum virtual junction parameter to Junction temperature in Absolute Maximum Ratings table Go
  • Moved Power Rating, Insulation Specifications, Safety-Related Certifications, and Safety Limiting Values tables, changed to current standardsGo
  • Changed Insulation Specifications table as per ISO standard Go
  • Added Safety and Insulation Characteristics section Go
  • Changed Figure 54 (The AMC1304 in a Frequency Inverter Application)Go
  • Changed Figure 58 (Decoupling the AMC1304)Go

Changes from B Revision (July 2015) to C Revision

  • Changed document status to full Production Data: released AMC1304Mx5 to productionGo
  • Changed status of AMC1304Mx5 rows to Production in Device Comparison TableGo
  • Changed title of AMC1304x05 Electrical Characteristics table from AMC1304L05 to AMC1304x05 Go
  • Changed typical specification in second row of DC Accuracy, PSRR parameter of AMC1304x05 Electrical Characteristics tableGo
  • Added CMOS Logic Family (AMC1304M05) section to AMC1304x05 Electrical Characteristics tableGo
  • Added last two rows to the Power Supply, IDVDD and PDVDD parameters of AMC1304x05 Electrical Characteristics tableGo
  • Changed title of AMC1304x25 Electrical Characteristics table from AMC1304L25 to AMC1304x25Go
  • Changed typical specification in second row of DC Accuracy, PSRR parameter of AMC1304x25 Electrical Characteristics table Go
  • Added CMOS Logic Family (AMC1304M05) section to AMC1304x25 Electrical Characteristics table Go
  • Added footnote 4 to AMC1304x25 Electrical Characteristics tableGo
  • Added last two rows to the Power Supply, IDVDD and PDVDD parameters of AMC1304x25 Electrical Characteristics table Go
  • Changed legends of Figure 6 and Figure 7 to include all devices, changed conditions of Figure 10 and Figure 11Go
  • Changed conditions of Figure 12, Figure 13, and Figure 14Go
  • Changed legends of Figure 19 to Figure 22, changed conditions of Figure 23Go
  • Changed conditions of Figure 24 and Figure 29Go
  • Changed conditions of Figure 30 and Figure 35Go
  • Changed conditions of Figure 36 to Figure 40Go
  • Added CMOS curve to Figure 44 to Figure 47Go
  • Changed legend of Figure 57Go

Changes from A Revision (May 2015) to B Revision

  • AMC1304L25 released to production Go
  • Changed Offset Error and Gain Error sub-bullets of second Features bullet to include AMC1304L25 specifications Go
  • Changed status of second row to ProductionGo
  • Changed table order in Specifications section to match correct SDS flowGo
  • Added AMC1304L25 Electrical Characteristics table Go
  • Changed Typical Characteristics section: changed condition statement to reflect AINP difference between device, added AMC1304L25 related curvesGo
  • Added AMC1304L25 plot to Figure 6 and Figure 7Go
  • Changed Figure 10Go
  • Added Figure 11Go
  • Added Figure 12 and condition to Figure 13Go
  • Changed Figure 14Go
  • Added AMC1304L25 plot to Figure 19, Figure 20, Figure 21, and Figure 22Go
  • Added Figure 23Go
  • Added Figure 29 and condition to Figure 24Go
  • Added condition to Figure 30Go
  • Added Figure 35Go
  • Added condition to Figure 36Go
  • Added device name to conditions of Figure 37 and Figure 38Go
  • Added Figure 39 and Figure 40Go

Changes from * Revision (September 2014) to A Revision

  • Made changes to product preview document; AMC1304L05 released to productionGo

 
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