Overview
Description
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.
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
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 587 KB | |
| Other | PDF 281 KB | |
| Other | PDF 577 KB | |
| Other | PDF 370 KB | |
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Design & Development
Software & Tools
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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Support Communities
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RICBox plugin loading error
Hi all,I have installed the Renesas IC ToolBox 7.3.0 + 07123907 (RICBox software) and the device software plugin R_RAA2S425x-4.1.0.98378, in this order.I received the following error creating a new project and selecting the RAA2S4252B product.I tried to reinstall the plugin but ...
May 12, 2023
Videos & Training
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.
News & Blog Posts
Blog Post
Sep 25, 2022
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