JAJSLE9 march   2023 OPA928

ADVANCE INFORMATION  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 説明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4.     Thermal Information
    5. 6.4 Electrical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Guard Buffer
      2. 7.3.2 Thermal Protection
      3. 7.3.3 Capacitive Load and Stability
      4. 7.3.4 EMI Rejection
      5. 7.3.5 Common-Mode Voltage Range
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Contamination Considerations
      2. 8.1.2 Guarding Considerations
      3. 8.1.3 Humidity Considerations
      4. 8.1.4 Dielectric Relaxation
    2. 8.2 Typical Applications
      1. 8.2.1 High-Impedance (Hi-Z) Amplifier
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Transimpedance Amplifier
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
    3. 8.3 Power-Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Examples
  9. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
        1. 9.1.1.1 PSpice® for TI
        2. 9.1.1.2 TINA-TI™シミュレーション・ソフトウェア (無償ダウンロード)
        3. 9.1.1.3 TI のリファレンス・デザイン
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 ドキュメントの更新通知を受け取る方法
    4. 9.4 サポート・リソース
    5. 9.5 Trademarks
    6. 9.6 静電気放電に関する注意事項
    7. 9.7 用語集
  10. 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

8.2.2 Transimpedance Amplifier

Figure 8-5 shows the OPA928 configured as a transimpedance amplifier (TIA) for a low-light photodiode. TIAs are needed to amplify the light-dependent current of the photodiode. In low-light conditions, photodiodes produce a very small current and ultra-low input bias current and large gain in excess of 109 V/A is required. For a full analysis of the TIA circuit, including theory, calculations, and measured data, see the Transimpedance Amplifiers (TIA): Choosing the Best Amplifier for the Job application brief.

GUID-20230113-SS0I-NBDN-QNVS-M3BP1SCR7XKR-low.svg Figure 8-5 OPA928 Simplified Photodiode Transimpedance Amplifier