ZHCSLH6D June   2021  – July 2022 TLV3601-Q1 , TLV3602-Q1 , TLV3603-Q1

PRODMIX  

  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 Electrostatic Discharge Caution
    6. 11.6 术语表
  12. 12Mechanical, Packaging, and Orderable Information

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8.1.1 Adjustable Hysteresis

As a result of a comparator’s high open loop gain, there is a small band of input differential voltage where the output can toggle back and forth between “logic high” and “logic low” states. This can cause design challenges for inputs with slow rise and fall times or systems with excessive noise. These challenges can be overcome by adding hysteresis to the comparator.

Since the TLV3601-Q1 and TLV3602-Q1 only has a minimal amount of internal hysteresis, external hysteresis can be applied in the form of a positive feedback loop that adjusts the trip point of the comparator depending on its current output state. See the Implementing Hysteresis section for more details.

The TLV3603-Q1 on the other hand has a LE/HYS pin that can be used to increase or eliminate the internal hysteresis of the comparator. In order to increase the internal hysteresis of the TLV3603-Q1, connect a single resistor as shown in the adjusting hysteresis figure between the LE/HYS pin and VEE. A curve of hysteresis versus resistance is provided below to provide guidance in setting the desired amount of hysteresis. Likewise, for applications where no hysteresis is desired, the LE/HYS pin can be connected to VCC.

Figure 8-1 Adjustable Hysteresis with an External Resistor
Figure 8-2 VHYST (mV) vs RHYST (kΩ), VCC = 5 V