SDAA459 July   2026 TMUX1108

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Signal Chain Architecture
  6. 3Types of transmitters and sensors
    1. 3.1 Flow Transmitters
    2. 3.2 Level Transmitters
    3. 3.3 Pressure Transmitter
    4. 3.4 Temperature Transmitters
    5. 3.5 Proximity Sensor
    6. 3.6 Gas Chemical Cell Process Analytical Sensors
  7. 4Summary
  8. 5Reference
  9. 6Revision History

Pressure Transmitter

Pressure transmitters are typically built around piezoresistive or capacitive Wheatstone bridge sensing elements. Higher-performance pressure transmitters can use two bridge elements to enhance sensitivity, accuracy, and temperature stability. Use a 2:1 MUX to alternate between the positive and negative reference voltages that feed into an Amp/ADC for quick and efficient measurements, reducing the need for multiple ADC inputs. Higher channel and voltage options are available for systems requiring more sensing elements and for higher excitation voltages.

Part NumberVcc Range (V)Channel CountConfigurationRon (Ω)Features
TS5A3159A512:10.7
  • Powered-off protection

TMUX62193612:12
  • 1.8V logic
  • Fail-safe logic
TMUX723444V42:13.5
  • 1.8V logic
  • Fail-safe logic
  • Latch-up immune