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RAA2S4268B5HWT is a signal conditioning chip for automotive pressure sensors launched by (Renesas), supporting SENT (unilateral/differential transmission) or I²C output, and is packaged in bare chip (QM). The RAA2S4268B5HWT is specifically designed for high-precision amplification and correction of differential bridge sensor signals, featuring the following key characteristics:

Differential resistance bridge sensor input, with optional on-chip or external temperature sensors - PTC, NTC, PN junction and sensor bridge temperature measurement.

The sensor range is from 1mV/V to 800mV/V, with a resolution of 12 to 18 bits.

Compensate for the zero drift, gain, high-order nonlinearity and temperature coefficient of the input signal of the resistance bridge sensor.

Precision

From -40 °C to +125 °C, it is 0.5%%FS

%FS is 1% from -40 °C to +155 °C

In the fastest mode, the internal output update rate can reach up to 200μs

Compliant with the SENT standard SAE J2716 Rev.4 (APR2016), the tick time is extended to 1μs, resulting in a SENT output time of 282μs (with two fast channels).

A third-order digital LPF with a cut-off frequency ranging from 10Hz to 1000Hz

Rapid calibration: The one-time offline calibration algorithm can minimize production costs to the greatest extent

The minimum number of external components enables the design of the sensor module to have first-class form factors

It meets the requirements of Grade 0 of AEC-Q100

The operating temperature range is from -40 °C to +155 °C, and it can last up to 100 hours up to +165 °C

Application scenarios

RAA2S4268B5HWT is suitable for the following application scenarios:

Pressure sensing in the engine control system

Monitoring of hydraulic and pneumatic systems

HVAC pressure measurement

Signal conditioning of automotive pressure sensors

Industrial automation and control systems

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