RAA2S4251B5HNP#JA0

RAA2S4251B5HNP#JA0 is an automotive sensor signal conditioner with analogue output and member of Renesas’ family of CMOS integrated circuits for highly accurate amplification and sensor-specific correction of differential bridge sensor signals. Featuring a maximum analogue pre-amplification of 900 with analogue sensor offset correction, this is adjustable to nearly all resistive bridges. Calibration coefficients and configuration data are stored in the non-volatile memory, which is reliable in automotive applications. Digital calibration helps keep assembly cost low as no trimming by external devices or lasers is needed. This is optimized for harsh automotive environments by overvoltage and reverse polarity protection circuitry, excellent electromagnetic compatibility, and multiple diagnostic features. Applications are pressure sensing in braking, transmission and HVAC, xEV, plug-in hybrid electric vehicle (PHEV), battery electric vehicle (BEV), fuel-cell electric vehicle (FCEV).

• Conditioning calculation is accomplished via a 16-bit RISC microcontroller
• Measured values are provided via a ratio-metric analogue output signal
• End-of-line calibration is also supported through this output pin via a One-Wire Interface (OWI)
• Capable of measuring one full resistive bridge sensor signals, qualified to AEC-Q100 grade 0
• Temperature measurement using external diode/PTC/TCR or internal (PTAT) sensor
• Higher digital resolution, fast OUR output update rate by ADC and sharp roll-off by digital LPF
• Ability to cover large sensor span and high accuracy (0.35-1.0%) over entire temp range (-40-150°C)
• 24-QFN package, optimized for harsh automotive environment, analogue output
• Overvoltage and reverse polarity protection, robust EMC performance and multiple diagnostic features