Pressure Sensor with Polynomial Compensation

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Pressure Sensor Interface with Polynomial Compensation and Diagnostics

The A17700 is a sensor interface IC designed to interface piezo resistive bridge for pressure sensing.  It offers high accuracy output in Analog, PWM and SENT format with diagnostic.  While analog output is used for legacy designs, PWM and unique FAST SENT output protocols support new application requirements. Accuracy is achieved by gain/offset input signal trim and 4th order polynomial input signal compensation at applied pressure and temperature. 

Top Features

  • Interface pressure sensor qualified with AEC-Q100 Grade 0 
  • Analog, PWM and SENT output.  
  • On-chip Poly(4,4) compensation for improved accuracy over temperature, compensating both IC and bridge 
  • Manchester interface for programming through single OUT pin
  • Suite of diagnostics to allow for safety-critical systems fault detection
  • QFN package with wWettable flanks enabling visual inspection of solder joints

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