Overview
Description
The RAA2S4266 is a top-tier automotive sensor signal conditioner (SSC) with SENT, 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 RAA2S4266 supports end-of-line calibration and offers an OWI interface for straightforward configuration and calibration.
Features
- 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:
- 0.5%FS at -40 °C to +125 °C
- 1%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 a 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
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet - Short-Form | PDF 208 KB | |
| Datasheet | PDF 718 KB | |
| Other | PDF 1.29 MB | |
| Other | PDF 603 KB | |
| Other | PDF 1.19 MB | |
| Application Note | PDF 539 KB | |
| Application Note | PDF 257 KB | |
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Design & Development
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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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Videos & Training
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.
News & Blog Posts
Blog Post
May 1, 2025
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