JAJSFB4F September   2010  – April 2018 OPA171 , OPA2171 , OPA4171

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      オフセット電圧とコモンモード電圧との関係
      2.      オフセット電圧と電源電圧との関係
  4. 4 改訂履歴
  5. 5 Pin Configuration and Functions
    1.     Pin Functions: OPA171
    2.     Pin Functions: OPA2171
    3.     Pin Functions: OPA4171
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information: OPA171
    5. 6.5 Thermal Information: OPA2171
    6. 6.6 Thermal Information: OPA4171
    7. 6.7 Electrical Characteristics
    8. 6.8 Typical Characteristics: Table of Graphs
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Operating Characteristics
      2. 7.3.2 Common-Mode Voltage Range
      3. 7.3.3 Phase-Reversal Protection
      4. 7.3.4 Capacitive Load and Stability
    4. 7.4 Device Functional Modes
      1. 7.4.1 Common-Mode Voltage Range
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Electrical Overstress
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Capacitive Load and Stability
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11デバイスおよびドキュメントのサポート
    1. 11.1 関連リンク
    2. 11.2 コミュニティ・リソース
    3. 11.3 商標
    4. 11.4 静電気放電に関する注意事項
    5. 11.5 Glossary
  12. 12メカニカル、パッケージ、および注文情報

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

7.3.4 Capacitive Load and Stability

The dynamic characteristics of the OPAx171-Q1 family of devices have been optimized for commonly encountered operating conditions. The combination of low closed-loop gain and high capacitive loads decreases the phase margin of the amplifier and can lead to gain peaking or oscillations. As a result, heavier capacitive loads must be isolated from the output. The simplest way to achieve this isolation is to add a small resistor (for example, ROUT equal to 50 Ω) in series with the output. Figure 38 and Figure 39 show small-signal overshoot versus capacitive load for several values of ROUT. For details of analysis techniques and application circuits, see Applications Bulletin AB-028, available for download from TI.com.

OPA171 OPA2171 OPA4171 tc_sm_oshoot-cl_pos_bos516.gifFigure 38. Small-Signal Overshoot vs Capacitive Load (100-mV Output Step)
OPA171 OPA2171 OPA4171 tc_sm_oshoot-cl_neg_bos516.gifFigure 39. Small-Signal Overshoot vs Capacitive Load (100-mV Output Step)