JAJSLB6G February   2021  – July 2024 TMUX7234

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  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  Source or Drain Continuous Current
    6. 5.6  ±15 V Dual Supply: Electrical Characteristics 
    7. 5.7  ±15 V Dual Supply: Switching Characteristics 
    8. 5.8  ±20 V Dual Supply: Electrical Characteristics
    9. 5.9  ±20 V Dual Supply: Switching Characteristics
    10. 5.10 44 V Single Supply: Electrical Characteristics 
    11. 5.11 44 V Single Supply: Switching Characteristics 
    12. 5.12 12 V Single Supply: Electrical Characteristics 
    13. 5.13 12 V Single Supply: Switching Characteristics 
    14. 5.14 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1  On-Resistance
    2. 6.2  Off-Leakage Current
    3. 6.3  On-Leakage Current
    4. 6.4  Transition Time
    5. 6.5  tON(EN) and tOFF(EN)
    6. 6.6  Break-Before-Make
    7. 6.7  tON (VDD) Time
    8. 6.8  Propagation Delay
    9. 6.9  Charge Injection
    10. 6.10 Off Isolation
    11. 6.11 Crosstalk
    12. 6.12 Bandwidth
    13. 6.13 THD + Noise
    14. 6.14 Power Supply Rejection Ratio (PSRR)
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Bidirectional Operation
      2. 7.3.2 Rail-to-Rail Operation
      3. 7.3.3 1.8 V Logic Compatible Inputs
      4. 7.3.4 Fail-Safe Logic
      5. 7.3.5 Latch-Up Immune
      6. 7.3.6 Ultra-Low Charge Injection
    4. 7.4 Device Functional Modes
    5. 7.5 Truth Tables
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 サポート・リソース
    4. 11.4 Trademarks
    5. 11.5 静電気放電に関する注意事項
    6. 11.6 用語集
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

6.14 Power Supply Rejection Ratio (PSRR)

PSRR measures the ability of a device to prevent noise and spurious signals that appear on the supply voltage pin from coupling to the output of the switch. The DC voltage on the device supply is modulated by a sine wave of 620mVPP. The ratio of the amplitude of signal on the output to the amplitude of the modulated signal is the ACPSRR. A high ratio represents a high degree of tolerance to supply rail variation.

The below shows how the decoupling capacitors reduce high frequency noise on the supply pins. This helps stabilize the supply and immediately filter as much of the supply noise as possible.

TMUX7234 ACPSRR Measurement Setup Figure 6-14 ACPSRR Measurement Setup