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Automotive capacitive pressure sensor reference design

TI -TIDA-00985

The TIDA-00985 reference design provides a simple, robust, and accurate sensor signal conditioning solution using the PGA331- Q1 for capacitive type pressure sensors. The protection strategies implemented in this design protect the pressure sensor against wiring harness faults, EMI, and automotive electrical transients. Additionally, this design guide systematically explains the theory, operation, and challenges involved in the design.

Features

  • Accuracy of 0.25% over temperature (-40°C to 125°C)
  • Second order temperature and linearity compensation algorithm
  • Form factor design of 18.6mm diameter
  • Protection against harness faults (over voltage and reverse polarity protection), broken wire detection
  • Meets ISO7637-3 requirements for transient pulses, tested for bulk current injection (BCI)-ISO11452-4

Part Included:

PGA331-Q1  Automotive Catalog Sensor Signal Conditioner for Capacitive Sensor with Compensation Algorithm 

Learn more by downloading the reference design below

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