ZHCSC46C February   2014  – June 2021 INA300

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings (1)
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 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 Selecting a Current-Sensing Resistor
        1. 7.3.1.1 Selecting a Current-Sensing Resistor: Example
      2. 7.3.2 Setting The Current-Limit Threshold
        1. 7.3.2.1 Resistor-Controlled Current Limit
        2. 7.3.2.2 Voltage Source-Controlled Current Limit
      3. 7.3.3 Delay Setting
      4. 7.3.4 Alert Timing Response
      5. 7.3.5 Selectable Hysteresis
      6. 7.3.6 Alert Output
      7. 7.3.7 Noise Adjustment Factor (NAF)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Alert Mode
        1. 7.4.1.1 Transparent Output Mode
        2. 7.4.1.2 Latch Output Mode
      2. 7.4.2 Disable Mode
      3. 7.4.3 Input Filtering
      4. 7.4.4 Using the INA300 INA300 With Common-Mode Transients Above 36 V
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Unidirectional Operation
        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 Bidirectional Operation
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
      3. 8.2.3 Window Comparator
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 术语表
  12. 12Mechanical, Packaging, and Orderable Information

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7.3.5 Selectable Hysteresis

Device hysteresis is adjustable based on the setting at the hysteresis (HYS) terminal. The smallest setting for hysteresis on the device, 2 mV, is enabled by leaving the HYS terminal open and floating. A 4-mV hysteresis is set by connecting the HYS terminal to ground; connecting this terminal to the supply voltage sets the hysteresis to 8 mV, as shown in Figure 7-6. The HYS terminal must be either connected directly to ground, directly to supply, or left completely floating. Additional external resistors must not be connected to this terminal. If a resistance is required by the application to be placed in series with either the supply or ground connections to the HYS terminal, this resistance must be limited to 1 kΩ so as to not conflict with the internal level-detection circuitry.

GUID-3F589C16-29E5-4339-AEFC-995F836DEB93-low.gif Figure 7-6 Hysteresis

The wide dynamic input range of the INA300INA300 necessitates an adjustable hysteresis to ensure that the device can be appropriately configured based on the specific operating conditions and application requirements. Figure 7-7 illustrates the transition locations for the ALERT terminal based on where the input signal, VIN, is measured relative the limit threshold, VLIMIT. The corresponding hysteresis levels and physical terminal settings for the device are shown in Table 7-5.

GUID-958B896F-E6D1-4AC9-9623-4A099A9B33FF-low.gif Figure 7-7 Typical Comparator Hysteresis
Table 7-5 Hysteresis Settings
HYSTERESIS HYSTERESIS SETTING
Float 2 mV
GND 4 mV
VS 8 mV