JAJS838F August   1999  – January 2025 LMC7111

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics for VS = 2.7V or ±1.35V
    6. 5.6  Electrical Characteristics for VS = 5V or ±2.5V
    7. 5.7  Electrical Characteristics for VS = 10V or ±5V
    8. 5.8  Typical Characteristics
    9. 5.9  Typical Characteristics: 2.7V
    10. 5.10 Typical Characteristics: 3V
    11. 5.11 Typical Characteristics: 5V
    12. 5.12 Typical Characteristics: 10V
  7. 6 Detailed Description
    1. 6.1 Feature Description
      1. 6.1.1 Benefits of the LMC7111 Tiny Amp
        1. 6.1.1.1 Size
        2. 6.1.1.2 Height
        3. 6.1.1.3 Signal Integrity
        4. 6.1.1.4 Simplified Board Layout
        5. 6.1.1.5 Low Supply Current
        6. 6.1.1.6 Wide Voltage Range
      2. 6.1.2 Input Common-Mode Voltage Range
      3. 6.1.3 Output Swing
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Capacitive Load Tolerance
      2. 7.1.2 Compensating for Input Capacitance When Using Large-Value Feedback Resistors
      3. 7.1.3 Dual and Quad Devices With Similar Performance
    2. 7.2 Typical Application
      1. 7.2.1 Biasing GaAs RF Amplifiers
      2. 7.2.2 Reference Buffer for Analog-to-Digital Converters
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Spice Macromodel
    2. 8.2 ドキュメントの更新通知を受け取る方法
    3. 8.3 サポート・リソース
    4. 8.4 Trademarks
    5. 8.5 静電気放電に関する注意事項
    6. 8.6 用語集
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

7.2.2 Reference Buffer for Analog-to-Digital Converters

The LMC7111 can be used as a voltage reference buffer for an analog-to-digital converter (ADC). This configuration works best for ADCs with the reference input is a static load, such as dual slope integrating ADCs. Converters with a reference input that is a dynamic load (the reference current changes with time) can require a faster device, such as the LMC7101 or the LMC7131.

The small size of the LMC7111 allows this device to be placed close to the reference input. The low supply current (25μA typical) saves power.

For ADC reference inputs that require higher accuracy and lower offset voltage, see the LMC646x data sheet. The LMC6462 has performance similar to the LMC7111. The LMC6462 is available in two grades with reduced input voltage offset.

LMC7111