SNOSDJ3 May   2024 TLV1812-EP

ADVANCE INFORMATION  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5.   Pin Configuration and Functions
  6. 4Specifications
    1. 4.1 Absolute Maximum Ratings
    2. 4.2 ESD Ratings
    3. 4.3 Thermal Information - EP
    4. 4.4 Recommended Operating Conditions
    5. 4.5 Electrical Characteristics
    6. 4.6 Switching Characteristics
    7. 4.7 Typical Characteristics
  7. 5Detailed Description
    1. 5.1 Overview
    2. 5.2 Functional Block Diagrams
    3. 5.3 Feature Description
    4. 5.4 Device Functional Modes
      1. 5.4.1 Inputs
        1. 5.4.1.1 TLV18x2-EP Rail-to-Rail Input
        2. 5.4.1.2 ESD Protection
        3. 5.4.1.3 Unused Inputs
      2. 5.4.2 Outputs
        1. 5.4.2.1 TLV1812-EP Push-Pull Output
        2. 5.4.2.2 TLV1822-EP Open-Drain Output
      3. 5.4.3 Power-On Reset (POR)
      4. 5.4.4 Hysteresis
  8. 6Application and Implementation
    1. 6.1 Application Information
      1. 6.1.1 Basic Comparator Definitions
        1. 6.1.1.1 Operation
        2. 6.1.1.2 Propagation Delay
        3. 6.1.1.3 Overdrive Voltage
      2. 6.1.2 Hysteresis
        1. 6.1.2.1 Inverting Comparator With Hysteresis
        2. 6.1.2.2 Non-Inverting Comparator With Hysteresis
        3. 6.1.2.3 Inverting and Non-Inverting Hysteresis using Open-Drain Output
    2. 6.2 Typical Applications
      1. 6.2.1 Window Comparator
        1. 6.2.1.1 Design Requirements
        2. 6.2.1.2 Detailed Design Procedure
        3. 6.2.1.3 Application Curve
      2. 6.2.2 Square-Wave Oscillator
        1. 6.2.2.1 Design Requirements
        2. 6.2.2.2 Detailed Design Procedure
        3. 6.2.2.3 Application Curve
      3. 6.2.3 Adjustable Pulse Width Generator
      4. 6.2.4 Time Delay Generator
      5. 6.2.5 Logic Level Shifter
      6. 6.2.6 One-Shot Multivibrator
      7. 6.2.7 Bi-Stable Multivibrator
      8. 6.2.8 Zero Crossing Detector
      9. 6.2.9 Pulse Slicer
    3. 6.3 Power Supply Recommendations
    4. 6.4 Layout
      1. 6.4.1 Layout Guidelines
      2. 6.4.2 Layout Example
  9. 7Device and Documentation Support
    1. 7.1 Documentation Support
      1. 7.1.1 Related Documentation
    2. 7.2 Receiving Notification of Documentation Updates
    3. 7.3 Support Resources
    4. 7.4 Trademarks
    5. 7.5 Electrostatic Discharge Caution
    6. 7.6 Glossary
  10. 8Revision History
  11. 9Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.1.2.2 Non-Inverting Comparator With Hysteresis

A non-inverting comparator with hysteresis requires a two-resistor network and a voltage reference (VREF) at the inverting input, as shown in Figure 6-5.

TLV1812-EP TLV1822-EP TLV1812-EP in a Non-Inverting Configuration With HysteresisFigure 6-5 TLV1812-EP in a Non-Inverting Configuration With Hysteresis

The equivalent resistor networks when the output is high and low are shown in Figure 6-6.

TLV1812-EP TLV1822-EP Non-Inverting Configuration Resistor NetworksFigure 6-6 Non-Inverting Configuration Resistor Networks

When VIN is less than VREF,, the output is low. For the output to switch from low to high, VIN must rise above the VIN1 threshold. Use Equation 4 to calculate VIN1.

Equation 4. TLV1812-EP TLV1822-EP

When VIN is greater than VREF, the output is high. For the comparator to switch back to a low state, VIN must drop below VIN2. Use Equation 5 to calculate VIN2.

Equation 5. TLV1812-EP TLV1822-EP

The hysteresis of this circuit is the difference between VIN1 and VIN2, as shown in Equation 6.

Equation 6. TLV1812-EP TLV1822-EP

For more information, see the Inverting comparator with hysteresis circuit application note and the Non-Inverting Comparator With Hysteresis Circuit application note.