SCDS443C October   2022  – October 2024 TMUX7201 , TMUX7202

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  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  ±15V Dual Supply: Electrical Characteristics 
    7. 5.7  ±15V Dual Supply: Switching Characteristics 
    8. 5.8  ±20V Dual Supply: Electrical Characteristics
    9. 5.9  ±20V Dual Supply: Switching Characteristics
    10. 5.10 44V Single Supply: Electrical Characteristics 
    11. 5.11 44V Single Supply: Switching Characteristics 
    12. 5.12 12V Single Supply: Electrical Characteristics 
    13. 5.13 12V 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  tON and tOFF Time
    5. 6.5  tON (VDD) Time
    6. 6.6  Propagation Delay
    7. 6.7  Charge Injection
    8. 6.8  Off Isolation
    9. 6.9  Bandwidth
    10. 6.10 THD + Noise
    11. 6.11 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 1.8V Logic Compatible Inputs
      4. 7.3.4 Integrated Pull-Down Resistor on Logic Pins
      5. 7.3.5 Fail-Safe Logic
      6. 7.3.6 latch-up Immune
      7. 7.3.7 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 Applications
      1. 8.2.1 TIA Feedback Gain Switch
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.1.2 Detailed Design Procedure

Figure 8-1 shows an application that demonstrates how the TMUX720x can be used to select the gain of a TIA amplifier. Here RF is used to prevent any open loop configuration. For the lowest error, the RON of the switch should be much smaller than RF_S, as this will scale linearly with the potential error.

The TMUX720x can support 1.8V logic signals on the control input, allowing the device to interface with low logic controls of an FPGA or MCU. The TMUX720x can operate without any external components except for the supply decoupling capacitors. The select pin has an internal Pull-Down resistor to prevent floating input logic. All inputs to the switch must fall within the recommend operating conditions of the TMUX720x including signal range and continuous current. For this design with a positive supply of 15V on VDD and negative supply of -15V on VSS, the signal range can be 15V to -15V. The maximum continuous current (IDC) can be up to 330mA (for wide-range current measurement, see the Section 5.4 section).