JAJSB70C July   2000  – October 2018 LF198-N , LF298 , LF398-N

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      代表的な接続
      2.      アクイジション時間
  4. 4 改訂履歴
  5. 5 概要（続き）
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Recommended Operating Conditions
    3. 7.3 Thermal Information
    4. 7.4 Electrical Characteristics, LF198-N and LF298
    5. 7.5 Electrical Characteristics, LF198A-N
    6. 7.6 Electrical Characteristics, LF398-N
    7. 7.7 Electrical Characteristics, LF398A-N (OBSOLETE)
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 TTL and CMOS 3 V ≤ VLOGIC (Hi State) ≤ 7 V
    2. 8.2 CMOS 7 V ≤ VLOGIC (Hi State) ≤ 15 V
    3. 8.3 Operational Amplifier Drive
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Hold Capacitor
      2. 10.1.2 DC and AC Zeroing
      3. 10.1.3 Logic Rise Time
      4. 10.1.4 Sampling Dynamic Signals
      5. 10.1.5 Digital Feedthrough
    2. 10.2 Typical Applications
      1. 10.2.1  X1000 Sample and Hold
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curves
      2. 10.2.2  Sample and Difference Circuit
      3. 10.2.3  Ramp Generator With Variable Reset Level
      4. 10.2.4  Integrator With Programmable Reset Level
      5. 10.2.5  Output Holds at Average of Sampled Input
      6. 10.2.6  Increased Slew Current
      7. 10.2.7  Reset Stabilized Amplifier
      8. 10.2.8  Fast Acquisition, Low Droop Sample and Hold
      9. 10.2.9  Synchronous Correlator for Recovering Signals Below Noise Level
      10. 10.2.10 2-Channel Switch
      11. 10.2.11 DC and AC Zeroing
      12. 10.2.12 Staircase Generator
      13. 10.2.13 Differential Hold
      14. 10.2.14 Capacitor Hysteresis Compensation
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13デバイスおよびドキュメントのサポート
    1. 13.1 デバイス・サポート
      1. 13.1.1 デバイスの項目表記
    2. 13.2 関連リンク
    3. 13.3 コミュニティ・リソース
    4. 13.4 商標
    5. 13.5 静電気放電に関する注意事項
    6. 13.6 Glossary
  14. 14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

9.1 Overview

The LFx98x devices are monolithic sample-and-hold circuits that utilize BI-FET technology to obtain ultrahigh DC accuracy with fast acquisition of signal and low droop rate. Operating as a unity-gain follower, DC gain accuracy is 0.002% typical and acquisition time is as low as 6 µs to 0.01%. A bipolar input stage is used to achieve low offset voltage and wide bandwidth. Input offset adjust is accomplished with a single pin, and does not degrade input offset drift. The wide bandwidth allows the LF198-N to be included inside the feedback loop of
1-MHz operational amplifier without having stability problems. Input impedance of 1010 Ω allows high-source impedances to be used without degrading accuracy.