SCDS428A March   2020  – March 2021 TMUX4157N

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
    6. 6.6 Dynamic Characteristics
    7. 6.7 Timing Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1  On-Resistance
    2. 7.2  Off-Leakage Current
    3. 7.3  On-Leakage Current
    4. 7.4  Transition Time
    5. 7.5  Break-Before-Make
    6. 7.6  Prop Delay
    7. 7.7  Device Turn on Time
    8. 7.8  Charge Injection
    9. 7.9  Off Isolation
    10. 7.10 Crosstalk
    11. 7.11 Bandwidth
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Bidirectional Operation
      2. 8.3.2 Rail-to-Rail Operation
      3. 8.3.3 1.8 V Logic Compatible Inputs
      4. 8.3.4 Fail-Safe Logic
    4. 8.4 Device Functional Modes
    5. 8.5 Truth Tables
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Negative Voltage Input Control for Power Amplifier
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 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 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.1 Negative Voltage Input Control for Power Amplifier

One application of the TMUX4157N is for input control of a power amplifier. Utilizing a switch allows a system to control when the DAC is connected to the power amplifier, and can stop biasing the power amplifier by switching the gate voltage. The ability to dynamically control the power amplifier is beneficial in multiple applications within communication equipment. Figure 9-1 shows the TMUX4157N configured for control of the power amplifier.

GUID-20201202-CA0I-FN8N-5F0D-JSRC0TGJGQ2H-low.gifFigure 9-1 Input Control of Power Amplifier