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  • AMC1311x 高阻抗 2V 输入增强型隔离放大器

    • ZHCSH46C December   2017  – June 2022 AMC1311

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  • AMC1311x 高阻抗 2V 输入增强型隔离放大器
  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and 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
    10. 7.10 Switching Characteristics
    11. 7.11 Timing Diagram
    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 Isolation Channel Signal Transmission
      3. 8.3.3 Analog Output
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Input Filter Design
        2. 9.2.2.2 Differential to Single-Ended Output Conversion
      3. 9.2.3 Application Curve
    3. 9.3 What To Do and What Not To Do
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 接收文档更新通知
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 术语表
  13. 13Mechanical, Packaging, and Orderable Information
  14. 重要声明
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DATA SHEET

AMC1311x 高阻抗 2V 输入增强型隔离放大器

本资源的原文使用英文撰写。 为方便起见，TI 提供了译文；由于翻译过程中可能使用了自动化工具，TI 不保证译文的准确性。 为确认准确性，请务必访问 ti.com 参考最新的英文版本（控制文档）。

1 特性

  • 针对隔离式电压测量优化了 2V 高阻抗输入电压范围
  • 固定增益：1
  • 低直流误差：
    • AMC1311：
      • 失调电压误差：±9.9mV（最大值）
      • 温漂±20μV/°C（典型值）
      • 增益误差：±1%（最大值）
      • 增益漂移：±30ppm/°C（典型值）
    • AMC1311B：
      • 失调电压误差：±1.5mV（最大值）
      • 温漂±10μV/°C（最大值）
      • 增益误差：±0.2%（最大值）
      • 增益漂移：±40ppm/°C（最大值）
    • 非线性度：0.04%（最大值）
  • 高侧 3.3V 工作电压 (AMC1311B)
  • 高 CMTI：100kV/µs（最小值）(AMC1311B)
  • 高侧电源缺失指示
  • 安全相关认证：
    • 符合 DIN EN IEC 60747-17 (VDE 0884-17) 标准的 7000VPK 增强型隔离
    • 符合 UL1577 标准且长达 1 分钟的 5000VRMS 隔离
    • 针对更大工业温度范围进行了全面优化： –40°C 至 +125°C

2 应用

  • 可用于以下应用的隔离式电压感应：
    • 电机驱动器
    • 变频器
    • 不间断电源

3 说明

AMC1311 是一款隔离式精密放大器，此放大器的输出与输入电路由抗电磁干扰性能极强的电容隔离层隔开。该隔离栅经认证可提供高达 5kVRMS 的增强型电隔离，符合 DIN EN IEC 60747-17 (VDE 0884-17) 和 UL1577 标准，并且可支持高达 1500VRMS 的工作电压。

该隔离层可将系统中以不同共模电压电平运行的各器件隔开，防止高电压冲击导致低压侧器件电气损坏或对操作员造成伤害。

AMC1311 的高阻抗输入针对与高阻抗电阻分压器或任何其他高阻抗电压信号源的连接进行了优化。出色的直流精度和低温漂支持在闭环系统中进行精确的隔离式电压检测和控制。集成的高侧电源电压缺失检测功能可简化系统级设计和诊断。

AMC1311 提供两种性能级别选项：AMC1311B 的额定工业工作温度范围为 –55°C 至 +125°C，AMC1311 为 –40°C 至 +125°C。

器件信息(1)
器件型号 封装 封装尺寸（标称值）
AMC1311 SOIC (8) 5.85mm × 7.50mm
AMC1311B
(1) 如需了解所有可用封装，请参阅数据表末尾的可订购产品附录。
简化版原理图

4 Revision History

Changes from Revision B (May 2020) to Revision C (June 2022)

  • 将隔离标准从 DIN VDE V 0884-11 (VDE V 0884-11) 更改为 DIN EN IEC 60747-17 (VDE 0884-17)，并相应更新了绝缘规格 和安全相关认证 表Go
  • 更改了特性 部分Go
  • 更改了说明 部分Go
  • Changed TA range for AMC1311B from –40°C to +125°C to –55°C to +125°C in Device Comparison Table Go
  • Changed CMTI value for AMC1311B from 75 kV/μs to 100 kV/μs in Device Comparison Table Go
  • Changed pin names: VIN to IN, VOUTP to OUTP, and VOUTN to OUTNGo
  • Merged VOS specs for 4.5V ≤ VDD1 ≤ 5.5 V and 3.0 V ≤ VDD1 ≤ 5.5 V ranges (AMC1311B only)Go
  • Changed VDD1 DC PSRR from –65 dB (typical) to –80 dB (typical)Go
  • Changed CMTI from 75 kV/µs (minimum), 140 kV/µs (typical) to 100 kV/µs (minimum), 150kV/µs (typical) (AMC1311B only)Go
  • Changed VDD1UV (VDD1 falling) from 1.75 V / 2.53 V / 2.7 V to 2.4 V / 2.6 V / 2.8 V (minimum / typical / maximum)Go
  • Changed Rise, Fall, and Delay Time Definition timing diagramGo
  • Changed Reinforced Isolation Capacitor Lifetime Projection figure Go
  • Deleted histogram plots from Typical Characteristics sectionGo
  • Changed Overview sectionGo
  • Changed functional block diagramGo
  • Changed the Analog Input sectionGo
  • Changed Isolation Channel Signal Transmission sectionGo
  • Deleted Fail-Safe Output section, added Analog Output sectionGo
  • Changed Application Information section for clarityGo
  • Changed Typical Application section and subsectionsGo
  • Added Input Filter Design sectionGo
  • Added Differential to Single-Ended Output Conversion sectionGo
  • Changed Step Response of the AMC1311 figureGo
  • Changed Application Curve sectionGo
  • Changed What To Do and What Not To Do sectionGo
  • Changed Power Supply Recommendations sectionGo
  • Changed Layout sectionGo
  • Changed Layout Guidelines sectionGo
  • Changed recommended layout drawingGo

Changes from Revision A (June 2018) to Revision B (May 2020)

  • 将特性 部分的 AMC1311B 温漂从 ±15μV/°C（最大值）更改为 10μV/°C（最大值） Go
  • 将特性 部分的 AMC1311B 增益误差从 ±0.3%（最大值）更改为 ±0.2%（最大值），并将 AMC1311B 增益漂移从 ±45ppm/°C（最大值）更改为 ±40ppm/°C（最大值） Go
  • 将 IEC 60950-1 和 IEC60065 更改为 IEC 62368-1 Go
  • Changed AMC1311B values for TCVOS, EG, and TCEG in Device Comparison Table Go
  • Changed AMC1311B values for TCVOS, EG, and TCEG in Device Comparison Table Go
  • Added ESD classification levels to ESD Ratings tableGo
  • Changed CLR and CPG values from 9 mm to 8.5 mmGo
  • Changed Insulation Specifications table per ISO standardGo
  • Changed Safety-Related Certification table per ISO standardGo
  • Changed Safety Limiting Values description as per ISO standardGo
  • Changed TCVOS parameter minimum value from –15 μV/°C to –10 μV/°C and maximum value from 15 μV/°C to 10μV/°C for the AMC1311B in the Electrical Characteristics tableGo
  • Changed EG parameter minimum value from –0.3% to –0.2% and maximum value from 0.3% to 0.2% for the AMC1311B in the Electrical Characteristics tableGo
  • Changed TCEG parameter minimum value from –45 ppm/°C to –40 ppm/°C and maximum value from 45 ppm/°C to 40 ppm/°C for the AMC1311B in the Electrical Characteristics tableGo
  • Changed Step Response of the AMC1311 figureGo

5 Device Comparison Table

PARAMETER AMC1311B AMC1311
High-side supply voltage, VDD1 3.0 V to 5.5 V 4.5 V to 5.5 V
Specified ambient temperature, TA –55°C to +125°C –40°C to +125°C
Input offset voltage, VOS 4.5 V ≤ VDD1 ≤ 5.5 V ±1.5 mV ±9.9 mV
3.0 V ≤ VDD1 ≤ 5.5 V ±2.5 mV Not applicable
Input offset drift, TCVOS ±3 µV/°C (typ), ±10 µV/°C (max) ±20 µV/°C (typ)
Gain error, EG ±0.2% ±1%
Gain error drift, TCEG ±5 ppm/°C (typ), ±40 ppm/°C (max) ±30 ppm/°C (typ)
Common-mode transient immunity, CMTI 100 kV/µs (min) 15 kV/µs (min)

6 Pin Configuration and Functions

Figure 6-1 DWV Package,8-Pin SOIC(Top View)
Table 6-1 Pin Functions
PINTYPEDESCRIPTION
NO.NAME
1VDD1High-side powerHigh-side power supply(1)
2INAnalog inputAnalog input
3SHTDNDigital inputShutdown input, active high, with internal pullup resistor (typical value: 100 kΩ)
4GND1High-side groundHigh-side analog ground
5GND2Low-side groundLow-side analog ground
6OUTNAnalog outputInverting analog output
7OUTPAnalog outputNoninverting analog output
8VDD2Low-side powerLow-side power supply(1)
(1) See the Section 10 section for power-supply decoupling recommendations.

 
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