SCDS228F AUGUST   2006  – December 2015 TS3A4741 , TS3A4742

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  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 (3-V Supply)
    6. 6.6 Electrical Characteristics (1.8-V Supply)
    7. 6.7 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    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 Related Links
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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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

Analog signals that range over the entire supply voltage (VCC to GND) of the TS3A4741 and TS3A4742 can be passed with very little change in Ron (see Typical Characteristics). The switches are bidirectional, so the NO, NC, and COM pins can be used as either inputs or outputs.

9.2 Typical Application

TS3A4741 TS3A4742 typicalapplication.gif Figure 19. Typical Application Schematic

9.2.1 Design Requirements

Ensure that all of the signals passing through the switch are within the specified ranges to ensure proper performance.

9.2.2 Detailed Design Procedure

The TS3A474x can be properly operated without any external components. However, TI recommends that unused pins should be connected to ground through a 50-Ω resistor to prevent signal reflections back into the device. TI also recommends that the digital control pins (INx) be pulled up to VCC or down to GND to avoid undesired switch positions that could result from the floating pin.

9.2.3 Application Curve

TS3A4741 TS3A4742 grp3_cds227.gif Figure 20. Ron vs VCOM (VCC = 2.7 V)