ZHCSLH1A September   2021  – December 2021 LMH5485-SP

ADVANCE INFORMATION  

  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  Electrical Characteristics: VS+ – VS– = 5 V
    6. 7.6  Electrical Characteristics: VS+ – VS– = 3 V
    7. 7.7  Quality Conformance Inspection
    8. 7.8  Typical Characteristics: 5 V Single Supply
    9. 7.9  Typical Characteristics: 3 V Single Supply
    10. 7.10 Typical Characteristics: 3 V to 5 V Supply Range
  8. 8 Parameter Measurement Information
    1. 8.1 Example Characterization Circuits
  9. 9 Detailed Description
    1. 9.1 Overview
      1. 9.1.1 Terminology and Application Assumptions
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Differential I/O
      2. 9.3.2 Power-Down Control Pin (PD)
        1. 9.3.2.1 Operating the Power Shutdown Feature
      3. 9.3.3 Input Overdrive Operation
    4. 9.4 Device Functional Modes
      1. 9.4.1 Operation from Single-Ended Sources to Differential Outputs
        1. 9.4.1.1 AC-Coupled Signal Path Considerations for Single-Ended Input to Differential Output Conversion
        2. 9.4.1.2 DC-Coupled Input Signal Path Considerations for Single-Ended to Differential Conversion
        3. 9.4.1.3 Resistor Design Equations for the Single-Ended to Differential Configuration of the FDA
        4. 9.4.1.4 Input Impedance for the Single-Ended to Differential FDA Configuration
      2. 9.4.2 Differential-Input to Differential-Output Operation
        1. 9.4.2.1 AC-Coupled, Differential-Input to Differential-Output Design Issues
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    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
    1. 13.1 Tube Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • HKX|8
散热焊盘机械数据 (封装 | 引脚)
订购信息

3 说明

LMH5485-SP 是一款辐射、低功耗、电压反馈、全差分放大器 (FDA)，输入共模范围低于负电源轨和轨至轨输出。专为功耗敏感型数据采集系统而设计，在这些系统中，高密度对于高性能模数转换器 (ADC) 或数模转换器 (DAC) 接口设计至关重要。

LMH5485-SP 具有所需的负电源轨输入，可用于连接直流耦合、以接地为中心的源信号。此负电源轨输入搭配轨至轨输出，只需使用一个 2.7V 至 5.1V 的电源，即可轻松将单端接地基准双极信号源与各种逐次逼近寄存器 (SAR)、Δ-Σ 或流水线 ADC 相连接。 LMH5485-SP 还为此类 ADC 驱动应用提供出色的直流精度，并可在 –55°C 至 +125°C 的宽温度范围内运行。

器件信息
器件型号(1) 等级 封装
5962R1920401VXC 耐辐射加固保障 (RHA) 陶瓷 CFP
HKX (8)
6.5mm × 6.5mm
5962-1920401VXC QMLV
LMH5485HKX/EM 工程样片(2)
(1) 如需了解所有可用封装，请参阅数据表末尾的封装选项附录。
(2) 这些器件仅适用于工程评估。器件按照不合规的流程进行加工处理。这些器件不适用于质检、生产、辐射测试或飞行。这些零器件无法在 –55°C 至 125°C 的完整 MIL 额定温度范围内或运行寿命中保证其性能。
GUID-20210126-CA0I-RN8T-4HZQ-RQ3HJDVZ8LWV-low.jpg简化版原理图
单端到差分增益为 2 的 100mVPP 输出