ZHCSR71 October   2020 TLV4062-Q1 , TLV4082-Q1

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
    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 Timing Diagrams
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Inputs (IN1, IN2)
      2. 7.4.2 Outputs (OUT1, OUT2)
      3. 7.4.3 Switching Threshold and Hysteresis
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Threshold Overdrive
    2. 8.2 Typical Applications
      1. 8.2.1 Monitoring Two Separate Rails
        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 Early Warning Detection
        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 Additional Application Information
        1. 8.2.3.1 Pull-Up Resistor Selection
        2. 8.2.3.2 INx Capacitor
  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 Receiving Notification of Documentation Updates
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 静电放电警告
    6. 11.6 术语表
      1.      Mechanical, Packaging, and Orderable Information

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8.1.1 Threshold Overdrive

Threshold overdrive is how much VIN1 or VIN2 exceeds the specified threshold, and is important to know because a smaller overdrive results in a slower OUTx response. Threshold overdrive is calculated as a percent of the threshold in question, as shown in Equation 1:

Equation 1. Overdrive = | (VIN1,2 / VIT – 1) × 100% |

where

  • VIT is either VIT– or VIT+, depending on whether calculating the overdrive for the falling input threshold or the rising input threshold, respectively
  • VIN1,2 is the voltage at the IN1 or IN2 input

Figure 6-16 and Figure 6-17 illustrates the minimum detectable pulse on the INx inputs versus overdrive, and is used to visualize the relationship that overdrive has on tPD(f) for high to low transitions. Figure 6-18 and Figure 6-19 is used to visual the relationship that overdrive has on tPD(r) for low to high transitions.