SBOS694A December 2013  – November 2015 TLV3691


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Switching Characteristics
    7. 6.7Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
    4. 7.4Device Functional Modes
      1. 7.4.1Nano-Power
      2. 7.4.2Rail-to-Rail Inputs
      3. 7.4.3Push-Pull Output
  8. Application and Implementation
    1. 8.1Application Information
      1. 8.1.1Comparator Inputs
      2. 8.1.2External Hysteresis
        1. Comparator With Hysteresis
        2. Comparator With Hysteresis
      3. 8.1.3Capacitive Loads
      4. 8.1.4Setting the Reference Voltage
    2. 8.2Typical Application
      1. 8.2.1Window Comparator
        1. Requirements
        2. Design Procedure
        3. Curve
      2. 8.2.2Overvoltage and Undervoltage Detection
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Device Support
      1. 11.1.1Development Support
        1. (Free Software Download)
        2. Precision Designs
    2. 11.2Documentation Support
      1. 11.2.1Related Documentation
    3. 11.3Community Resources
    4. 11.4Trademarks
    5. 11.5Electrostatic Discharge Caution
    6. 11.6Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information

10 Layout

10.1 Layout Guidelines

Comparators are very sensitive to input noise. For best results, adhere to the following layout guidelines.

  1. Use a printed-circuit-board (PCB) with a good, unbroken, low-inductance ground plane. Proper grounding (use of a ground plane) helps maintain specified device performance.
  2. To minimize supply noise, place a decoupling capacitor (0.1-μF ceramic, surface-mount capacitor) as close as possible to VCC.
  3. On the inputs and the output, keep lead lengths as short as possible to avoid unwanted parasitic feedback around the comparator. Keep inputs away from the output.
  4. Solder the device directly to the PCB rather than using a socket.
  5. For slow-moving input signals, take care to prevent parasitic feedback. A small capacitor (1000 pF or less) placed between the inputs can help eliminate oscillations in the transition region. This capacitor causes some degradation to propagation delay when impedance is low. The topside ground plane runs between the output and inputs.
  6. The ground pin ground trace runs under the device up to the bypass capacitor, shielding the inputs from the outputs.

10.2 Layout Example

TLV3691 layout_example_sbos694.gif Figure 35. TLV3691 Layout Example