SNOSDG6 September   2024 TLV1831-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1.     Pin Configuration: TLV1831-Q1 and TLV1841-Q1
    2.     Pin Configurations: TLV1832-Q1 and TLV1842-Q1
    3.     Pin Configuration and Functions: TLV1834-Q1 and TLV1844-Q1
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Thermal Information
    4. 5.4 Recommended Operating Conditions
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
    4. 6.4 Device Functional Modes
      1. 6.4.1 Inputs
        1. 6.4.1.1 Rail-to-Rail Input
        2. 6.4.1.2 Unused Inputs
      2. 6.4.2 Outputs
        1. 6.4.2.1 TLV183x-Q1 Push-Pull Output
        2. 6.4.2.2 TLV184x-Q1 Open-Drain Output
      3. 6.4.3 ESD Protection
        1. 6.4.3.1 Inputs
        2. 6.4.3.2 Outputs
      4. 6.4.4 Power-On Reset (POR)
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Basic Comparator Definitions
        1. 7.1.1.1 Operation
        2. 7.1.1.2 Propagation Delay
        3. 7.1.1.3 Overdrive Voltage
      2. 7.1.2 Hysteresis
        1. 7.1.2.1 Inverting Comparator With Hysteresis
        2. 7.1.2.2 Non-Inverting Comparator With Hysteresis
        3. 7.1.2.3 Inverting and Non-Inverting Hysteresis using Open-Drain Output
    2. 7.2 Typical Applications
      1. 7.2.1 Window Comparator
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 Square Wave Oscillator
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Performance Plots
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.1.2.1 Inverting Comparator With Hysteresis

The inverting comparator with hysteresis requires a three-resistor network that is referenced to the comparator supply voltage (VCC), as shown in Figure 7-3.

TLV1831-Q1 TLV1841-Q1 TLV1832-Q1 TLV1842-Q1 TLV183x-Q1 in an Inverting Configuration With HysteresisFigure 7-3 TLV183x-Q1 in an Inverting Configuration With Hysteresis

The equivalent resistor networks when the output is high and low are shown in Figure 7-3.

TLV1831-Q1 TLV1841-Q1 TLV1832-Q1 TLV1842-Q1 Inverting Configuration Resistor Equivalent NetworksFigure 7-4 Inverting Configuration Resistor Equivalent Networks

When VIN is less than VA, the output voltage is high (for simplicity, assume VO switches as high as VCC). The three network resistors can be represented as R1 || R3 in series with R2, as shown in Figure 7-4.

Equation 1 below defines the high-to-low trip voltage (VA1).

Equation 1. TLV1831-Q1 TLV1841-Q1 TLV1832-Q1 TLV1842-Q1

When VIN is greater than VA, the output voltage is low. In this case, the three network resistors can be presented as R2 || R3 in series with R1, as shown in Equation 2.

Use Equation 2 to define the low to high trip voltage (VA2).

Equation 2. TLV1831-Q1 TLV1841-Q1 TLV1832-Q1 TLV1842-Q1

Equation 3 defines the total hysteresis provided by the network.

Equation 3. TLV1831-Q1 TLV1841-Q1 TLV1832-Q1 TLV1842-Q1