SP40PLUS Tire Pressure Monitoring Sensor
Product Overview
The SP40PLUS is a highly integrated Tire Pressure Monitoring System (TPMS) sensor designed for automotive applications. It features a patented Glass-Silicon-Glass MEMS pressure sensor with excellent media compatibility, a calibrated absolute air pressure sensor, and a Z-axis accelerometer for motion and angular measurement. Integrated temperature and supply voltage sensors, along with an 8051 microcontroller with 12K Flash memory, provide comprehensive monitoring capabilities. The system controller offers flexible wake-up and power management, while the RF transmitter supports fractional-N sigma-delta PLL for precise frequency control. Unique firmware functions enable angular wheel position determination for tire localization (APS). An integrated LF receiver allows for diagnostic commands and modulated telegram reception. This sensor is optimized for valve-based and in-tire TPMS modules, suitable for OEM, aftermarket, and retrofit applications.
Product Attributes
- Brand: Infineon
- Product Code: SP400-11-01
- Quality Requirement Category: Automotive
- Package: PG-DSOSP-14-82
- Moisture Sensitivity: MSL 1
- Solder Condition: Pb-free assembly
Technical Specifications
| Parameter | Symbol | Values | Unit | Note or Test Condition |
|---|---|---|---|---|
| Supply Voltage (Max) | VDDmax | -0.3 to 3.8 | V | |
| Operating Supply Voltage (Normal) | VDD | VUVRA 3.6 | V | Device not in power down state |
| Operating Ambient Temperature | TOperating | -40 to 125 | C | Normal Operation |
| FLASH programming/erasing Temperature | TFlash | -20 to 90 | C | |
| Pressure Sensor Input Range (500/750/900kPa Variant) | 100 to 900 | kPa | ||
| Z-axis Acceleration Sensor Input Range | ain | -20 to 355 | g | Selectable by firmware function |
| Temperature Sensor Measurement Range | Trange | -40 to 125 | C | |
| Battery Sensor Measurement Range | Vrange | VUVRA to 3.6 | V | See Table 10 for VUVRA |
| Flash Memory Data Retention Time | tRet Flash | 10 | y | Defect rate < 1ppm over lifetime. |
| Flash Write Cycles | Nwrite | 100 | ||
| LF Carrier Frequency | fLF | 115 to 135 | kHz | |
| RF Transmitter Frequency (315MHz variant) | fTX | 314 to 316 | MHz | |
| RF Transmitter Frequency (434MHz variant) | fTX | 433 to 435 | MHz | |
| RF Output Power | PRF | 2 to 7 | dBm | Dependent on VDD and temperature |
| Crystal Oscillator Frequency | fXTAL | 25.920 to 26.080 | MHz |
2504101957_Infineon-SP400-11-01_C539280.pdf
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