JAJSI97B December   2019  – August 2022 INA293

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  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. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 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 Amplifier Input Common-Mode Signal
        1. 7.3.1.1 Input-Signal Bandwidth
        2. 7.3.1.2 Low Input Bias Current
        3. 7.3.1.3 Low VSENSE Operation
        4. 7.3.1.4 Wide Fixed Gain Output
        5. 7.3.1.5 Wide Supply Range
    4. 7.4 Device Functional Modes
      1. 7.4.1 Unidirectional Operation
      2. 7.4.2 High Signal Throughput
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 RSENSE and Device Gain Selection
      2. 8.1.2 Input Filtering
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Overload Recovery With Negative VSENSE
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 サポート・リソース
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  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

7.3.1.1 Input-Signal Bandwidth

The INA293 –3-dB bandwidth is gain dependent, with several gain options of 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The unique multistage design enables the amplifier to achieve high bandwidth at all gains. This high bandwidth provides the throughput and fast response that is required for the rapid detection and processing of overcurrent events.

The bandwidth of the device also depends on the applied VSENSE voltage. Figure 7-1 shows the bandwidth performance profile of the device over frequency as output voltage increases for each gain variation. As shown in Figure 7-1, the device exhibits the highest bandwidth with higher VSENSE voltages, and the bandwidth is higher with lower device gain options. Individual requirements determine the acceptable limits of error for high frequency current-sensing applications. Testing and evaluation in the end application or circuit is required to determine the acceptance criteria, and to validate that the performance levels meet the system specifications.

GUID-E75D6FFB-E998-4C4F-AE51-FB02BB1A28F5-low.gifFigure 7-1 Bandwidth vs Output Voltage