The RAA2S4252B is a member of Renesas’ family of CMOS integrated circuits for highly accurate amplification and sensor-specific correction of differential bridge sensor signals. Featuring a maximum analog pre-amplification of 900 with analog sensor offset correction (XSOC), the RAA2S4252B is adjustable to nearly all resistive bridges.

Conditioning calculation is accomplished via a 16-bit RISC microcontroller. Calibration coefficients and configuration data are stored in the nonvolatile memory (NVM), which is reliable in automotive applications.

Measured values are provided via a ratio-metric analog output signal. End-of-line calibration is also supported through this output pin via a One-Wire Interface (OWI). Digital calibration helps keep assembly cost low as no trimming by external devices or lasers is needed. The RAA2S4252B is optimized for harsh automotive environments by over-voltage and reverse polarity protection circuitry, excellent electromagnetic compatibility, and multiple diagnostic features.


  • Capable of measuring one full resistive bridge sensor signals
  • Differential bridge sensor input with selectable on-chip or external PN-junction temperature sensor
  • Large sensor offset correction using analog offset compensation and digital zooming with up to 18-bit resolution
  • Higher digital resolution, fast OUR output update rate by ADC & sharp roll-off by digital LPF
  • Ability to cover large sensor span & high accuracy (1.0%) over the entire temp. range (-40°C to 150°C)
  • Qualified according to AEC-Q100 Grade 0
  • Optimized for harsh automotive environment
  • Over-voltage and reverse polarity protection ±40V, robust EMC performance, and multiple diagnostic features
  • Minimal EOL (end-of-line) production costs during mass production
  • 8-SOIC as package option
  • Analog output



  • Pressure sensing in braking, transmission and HVAC applications
    • xEV
    • Plug-in hybrid electric vehicle (PHEV)
    • Battery electric vehicle (BEV)
    • Fuel-cell electric vehicle (FCEV)


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Automotive Sensor Signal Conditioner with Analog Output
Automotive Sensor Signal Conditioner with Analog Output (ASIL-B according to ISO26262)


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High Performance, Highly Accurate Pressure Sensing Solution for Automotive

An overview of the RAA2S425x Family of ICs for automotive pressure sensing systems. Renesas’ SSCs provide highly accurate amplification and sensor-specific correction of signals in automotive xEV/PHEV/FCEV and BEV pressure sensing braking, transmission and HVAC systems.

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