SLCS137D November   2000  – May 2017 TLV3701 , TLV3702 , TLV3704

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Tables
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Recommended Operating Conditions
    3. 7.3 Thermal Information - TLV3701
    4. 7.4 Thermal Information - TLV3702
    5. 7.5 Thermal Information - TLV3704
    6. 7.6 Electrical Characteristics
    7. 7.7 Switching Characteristics
    8. 7.8 Dissipation Ratings
    9. 7.9 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Operating Voltage
      2. 8.3.2 Setting the Threshold
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 DIP Adapter EVM
        2. 12.1.1.2 Universal Op Amp EVM
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Related Links
    4. 12.4 Receiving Notification of Documentation Updates
    5. 12.5 Community Resources
    6. 12.6 Trademarks
    7. 12.7 Electrostatic Discharge Caution
    8. 12.8 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

9.1 Application Information

Many applications require the detection of a signal (voltage or current) that exceeds a particular threshold voltage or current. Using a comparator to make that threshold detection is the easiest, lowest power and highest speed way to make a threshold detection.

9.2 Typical Application

TLV3701 TLV3702 TLV3704 Application_SLCS135.gif Figure 18. 1.25-V Threshold Detector

9.2.1 Design Requirements

  • Detect when a signal is above or below 1.25 V
  • Operate from a single 5-V power supply
  • Rail-to-rail input voltage range from 0 to 5 V
  • Rail-to-rail output voltage range from 0 to 5 V

9.2.2 Detailed Design Procedure

The input voltage range in the circuit illustrated in Figure 18 is limited only by the power supply applied to the TV3701. In this example with the selection of a 5-V, single-supply power supply, the input voltage range is limited to 0 to VS + 5 V, or 0 to 10 V. The threshold voltage of 1.25 V can de derived in a variety of ways. As the TLV3701 is a very low-power device, it is desirable to also use very low power to create the threshold voltage. The REF3312 series voltage reference is selected for its stable output voltage of 1.25 V and its low power consumption of only 3.9 µA. The TLV3701 is an push-pull output comparator, and does not require a pullup resistor to save power.

9.2.3 Application Curve

TLV3701 TLV3702 TLV3704 D100_SLCS135.gif
Figure 19. Transfer Function for the Threshold Detector