ZHCSKO5E june   2021  – april 2023 TLV3601 , TLV3602 , TLV3603 , TLV3603E

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 Diagrams
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Inputs
      2. 7.4.2 Push-Pull (Single-Ended) Output
      3. 7.4.3 Known Startup Condition
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Adjustable Hysteresis
      2. 8.1.2 Capacitive Loads
      3. 8.1.3 Latch Functionality
    2. 8.2 Typical Application
      1. 8.2.1 Implementing Hysteresis
        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 Optical Receiver
      3. 8.2.3 Over-Current Latch Condition
      4. 8.2.4 External Trigger Function for Oscilloscopes
  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 Device Support
      1. 11.1.1 Development Support
    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 静电放电警告
    6. 11.6 术语表
  12. 12Mechanical, Packaging, and Orderable Information

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8.2.1 Implementing Hysteresis

A comparator may produce “chatter” (multiple transitions) at the output when there are noise or signal variations around the reference threshold; this causes the output to change states in rapid random successions as the comparator input goes above and below the threshold of the reference. This usually occurs when the input signal is moving very slowly across the switching threshold of the comparator. This problem can be prevented by using the internal hysteresis feature of the comparator or by the addition of external hysteresis.

The TLV3603(E) has a LE/HYS pin that allows for variable internal hysteresis depending on the resistor value connected between the pin and VEE, where increasing the resistance decreases the hysteresis to a minimum level.

GUID-20210819-SS0I-83H2-HKRC-TB9NKSDKCCLR-low.svgFigure 8-5 Adjustable Hysteresis with a 150kΩ Resistor using TLV3603.

Since the TLV3601 and TLV3602 only have a minimal amount of internal hysteresis, external hysteresis can be added in the form of a positive feedback loop. A non-inverting comparator with hysteresis requires a two-resistor network and a voltage reference (VREF) at the inverting input, as shown in Figure 8-6.

GUID-20210819-SS0I-VFLG-WB9B-PPRKCD1NKJ2S-low.svgFigure 8-6 Non-Inverting Configuration for Hysteresis using TLV3601.