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RAA2S4261

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Automotive Sensor Signal Conditioner with SENT or I2C Output (ASIL C, QFN20L)

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RAA2S426xB ASIL C Short-Form DatasheetRAA2S426XB ASIL C Datasheet

Overview

The RAA2S4261 is a top-tier automotive sensor signal conditioner (SSC) with SENT or I2C output, designed for precise amplification and correction of differential bridge sensor signals. It offers exceptional precision and reliability with outstanding analog pre-amplification and sensor offset correction, making it adaptable to nearly all resistive bridges. The advanced signal processing utilizes a 16-bit RISC microcontroller for accurate conditioning calculations, and data stored in nonvolatile memory. Reliable data transmission is ensured through a digital SENT interface, providing dependable transmission via a single output pin. Built for tough environments, the product features robust protection circuitry, excellent electromagnetic compatibility, and comprehensive diagnostic capabilities. Additionally, the RAA2S4261 supports end-of-line calibration and offers an OWI or I2C interface for straightforward configuration and calibration.

RAA2S426x Block Diagram
RAA2S426x Block Diagram
  • Product developed in compliance with ISO 26262:2018 ASIL C
  • Differential bridge sensor input with selectable on-chip or external temperature sensor – PTC, NTC, PN-junction, and sensor bridge resistance
  • 1mV/V to 800mV/V sensor span with 12 to 18-bit resolution
  • Compensation for offset, gain, and higher order nonlinearity and temperature coefficients of measured bridge sensor input signal
  • Accuracy:
    • 0.25%FS at -40 °C to +125 °C
    • 0.5%FS at -40 °C to +155 °C
  • Internal output update rate up to 200µs in the fastest mode
  • Compliant with SENT standard SAE J2716 Rev. 4 (APR2016), tick time extended to 1µs resulting in SENT output time of 282µs (two fast channels)
  • Third order digital LPF with a cut-off frequency of 10Hz to 1000Hz
  • Fast in calibration: One-pass, end-of-line calibration algorithm minimizes production costs
  • Minimum number of external components enables the design of sensor modules with best-in-class form factor
  • Qualified according to AEC-Q100 Grade 0
  • Operating temperature range of -40 °C to +155 °C with up to 100hrs extension up to +165 °C
  • Electro-hydraulic braking
  • Electro-mechanical braking
  • Fuel cell system monitoring
  • Direct hydrogen combustion
  • Hydraulic pressure
  • Pneumatic pressure
  • Industrial automation and control systems

Documentation

Featured Documentation
Type Title Date
Datasheet - Short-Form
RAA2S426xB ASIL C Short-Form Datasheet
PDF 153 KB
Datasheet
RAA2S426XB ASIL C Datasheet
Log in to Download PDF 680 KB
Other
RAA2S426XB ASIL C Memory Allocation
Log in to Download PDF 1.26 MB
Other
RAA2S426XB Command Description
Log in to Download PDF 603 KB
Manual - Software
RAA2S426xB Functional Safety Manual
Log in to Download PDF 571 KB
Other
RAA2S426XB Functional Description
Log in to Download PDF 1.12 MB
6 items

Design & Development

Software & Tools
Renesas IC Toolbox (RICBox)
The Renesas IC Toolbox (RICBox) software platform enables customers to configure Renesas devices on evaluation kits when attached to the computer running the software.
 Software Package Renesas
1 item

Software Downloads
Type Title Date
Software & Tools - Evaluation Software
RAA2S426X Evaluation SW
Log in to Download ZIP 146.53 MB
1 item
RAA2S426xEVB Evaluation Board

RAA2S426XKIT

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Automotive Sensor Signal Conditioner with SENT Output Evaluation Kit

The RAA2S426XKIT evaluation board is designed to help users evaluate the performance of the RAA2S426x sensor. It features a comprehensive setup for power supply and...

Featured Documents:
RAA2S426XB Evaluation Kit User Guide

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Videos & Training

RAA2S4261/2 ASIL C Automotive SSCs Overview

The RAA2S426x are top-tier automotive sensor signal conditioners (SSCs) with SENT or I²C output, designed for precise amplification and correction of differential bridge sensor signals. The devices offer exceptional precision and reliability with outstanding analog pre-amplification and sensor offset correction, making them adaptable to nearly all resistive bridges.

Video List
RAA2S4261/2 ASIL C Automotive SSCs Overview

News & Blog Posts

Solving Key Challenges in Automotive Sensor Signal Conditioning with RAA2S426x Blog Post May 1, 2025