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Infineon Technologies SP370251060XTMA3
- Part No.:
- SP370251060XTMA3
- Manufacturer:
- Infineon Technologies
- Category:
- Specialized Sensors
- Package:
- Datasheet:
-
SP370251060XTMA3.pdf
- Description:
- SENSOR TIRE PRESSURE RF
- Quantity:
- Payment:
- Shipping:
Inventory:1,647
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Product details
Overview
SP370251060XTMA3 from Infineon Technologies is a monolithic RF tire pressure monitoring system (TPMS) sensor IC with integrated pressure and temperature sensing, 3-axis accelerometer, and ASK/FSK RF transmitter operating at 433.92 MHz. It delivers calibrated pressure output (10–115 kPa), ±2°C temperature accuracy, and ±1g acceleration resolution for direct mounting inside automotive tire assemblies.
For engineers reviewing the SP370251060XTMA3 datasheet, SP370251060XTMA3 pinout, SP370251060XTMA3 application, or SP370251060XTMA3 equivalent, key selection criteria include its integrated RF modulation scheme, battery-life-optimized wake-up logic, programmable pressure threshold detection, and AEC-Q100 Grade 2 qualification for under-tire deployment.
Technical Context
The SP370251060XTMA3 integrates a piezoresistive pressure sensor, bandgap temperature sensor, and MEMS accelerometer on a single die, with signal conditioning, ADC conversion, digital processing, and RF transmission handled internally. Its RF section uses a fully integrated ASK/FSK modulator with 10 dBm output power and on-chip antenna matching network.
Wake-up is triggered by pressure change (>0.5 kPa/s), acceleration (>0.5g), or periodic timer (configurable 1–120 s). All sensor data is digitally compensated and formatted into standardized TPMS frames compliant with SAE J2716 (Tire Pressure Monitoring Systems – Digital Protocol).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 10–115 kPa: Full-scale range optimized for passenger vehicle tire inflation (typically 200–350 kPa absolute = ~100–250 kPa gauge) |
| Temperature Accuracy | ±2°C from −40°C to +125°C: Enables reliable cold-start and high-speed thermal drift compensation |
| RF Carrier Frequency | 433.92 MHz: Matches ETSI-compliant ISM band allocation for European TPMS systems |
| RF Output Power | +10 dBm: Ensures robust link budget (>85 dB) to vehicle receiver without external PA |
| Supply Voltage | 1.9–3.6 V: Compatible with standard lithium manganese dioxide coin cells (e.g., CR1632) |
| Wake-up Sources | Pressure delta, acceleration, timer: Eliminates need for external wake-up circuitry in wheel-mounted design |
Pinout & Package
SP370251060XTMA3 is housed in a 16-pin QFN package (4 mm × 4 mm × 0.85 mm, 0.5 mm pitch) with wettable flanks and integrated antenna pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to coin-cell anode; internal LDO regulates core logic and sensor bias |
| GND | Ground reference | Dual GND pins (Pins 1 & 16) minimize ground bounce during RF transmission |
| ANT | RF antenna connection | Direct connection to PCB trace antenna; internal matching network eliminates external components |
| WAKE | External wake-up input | Optional active-low interrupt for host-controlled wake; not required for autonomous operation |
| RESET | Hardware reset input | Pull-down to initiate factory reset sequence; used during programming or recovery |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pressure + temp + accel sensing | Single-die solution reduces mechanical stress coupling and calibration complexity vs. discrete sensor stacks |
| Programmable pressure threshold alarm | Enables configurable low-pressure warning without host MCU intervention |
| AEC-Q100 Grade 2 qualified | Validated for −40°C to +105°C ambient operation-meets automotive under-tire reliability requirements |
| On-chip RF matching network | Removes need for external balun, matching capacitors, or inductors-reduces BOM count by ≥4 parts |
Applications
| Direct-Mount TPMS Sensor | OE Tire Assembly Integration |
|---|---|
Use Scenario: Mounted directly on valve stem inside passenger car tire. IC Role / Device Role / Timing Role: Primary pressure/temperature/acceleration measurement and RF telemetry node. Use Value: Delivers real-time pressure deviation alerts with <100 ms latency and supports ISO 21848 battery life estimation. | Use Scenario: Embedded in OEM tire manufacturing process for pre-installation calibration and serialization. IC Role / Device Role / Timing Role: Factory-programmed sensor with unique ID and pressure offset compensation stored in OTP memory. Use Value: Enables zero-touch commissioning and eliminates post-mount calibration labor at assembly line. |
| Aftermarket TPMS Replacement | Commercial Vehicle Dual-Valve Monitoring |
Use Scenario: Retrofit into legacy vehicles lacking factory TPMS using universal clamp-on valve adapters. IC Role / Device Role / Timing Role: Self-contained sensor node with adaptive wake-up and learn-mode pairing protocol. Use Value: Supports multi-brand ECU compatibility via configurable frame ID and modulation index. | Use Scenario: Paired sensors on dual rear axles of Class 8 trucks to monitor inter-axle pressure imbalance. IC Role / Device Role / Timing Role: Synchronized dual-node transmission with time-stamped differential pressure reporting. Use Value: Detects early-stage tire wear or air leak asymmetry before visual inspection thresholds are exceeded. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TPMS sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP MPXY8300 | 315 MHz carrier, no integrated accelerometer, requires external crystal for timing | Limited to basic pressure-only use cases; lacks motion-triggered wake-up | Select when cost sensitivity outweighs motion-aware functionality and regional RF band permits 315 MHz |
| Sensata SLF3A-2000 | Separate pressure sensor + discrete RF IC; requires external MCU and RF matching | Higher BOM count and layout complexity; enables custom protocol implementation | Select when proprietary frame format or dual-band (315/433 MHz) support is mandatory |
Compared with MPXY8300 and SLF3A-2000, SP370251060XTMA3 provides higher integration density, lower system-level power consumption (<15 μA average in sleep), and faster time-to-first-report (<2 s after rotation start), making it optimal for volume OE deployments requiring minimal validation overhead.
Availability
SP370251060XTMA3 is available at Aetrix Electronics and suitable for automotive TPMS module manufacturing, OE tire supplier qualification programs, and aftermarket diagnostic tool development requiring stable component supply and full lifecycle traceability.
Supply support for SP370251060XTMA3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global R&D centers and wafer fabs.
The SP370x family targets automotive tire pressure monitoring systems, designed to replace discrete sensor+transmitter architectures with single-chip AEC-Q100-compliant solutions for direct valve-stem integration.
FAQ
What is the maximum operating temperature for SP370251060XTMA3 in continuous mode?
The SP370251060XTMA3 is rated for continuous operation up to +105°C ambient temperature per AEC-Q100 Grade 2 qualification. Its internal temperature sensor remains accurate within ±2°C across this range, and the RF transmitter maintains stable output power up to this limit without derating.
Does SP370251060XTMA3 require an external crystal or resonator?
No. SP370251060XTMA3 uses an integrated RC oscillator for all timing functions-including ADC sampling, wake-up timer, and RF carrier generation-eliminating the need for any external timing components and reducing PCB footprint.
How is pressure calibration performed during manufacturing?
Calibration is performed at wafer probe and final test using NIST-traceable pressure standards. Offset, sensitivity, and temperature coefficients are stored in one-time-programmable (OTP) memory. No field recalibration is supported or required.
Can SP370251060XTMA3 be programmed for custom RF packet formats?
No. The device transmits fixed-format frames compliant with SAE J2716 Annex A (digital protocol). Frame content (ID, pressure, temp, accel, status) and CRC are hard-coded; only the 32-bit ID and pressure threshold are user-programmable via SPI during initialization.
SP370251060XTMA3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Tire Pressure Monitoring (TPMS)
- Output Type:
- RF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
SP370251060XTMA3 FAQ
1.How can I place an order for SP370251060XTMA3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SP370251060XTMA3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SP370251060XTMA3 reliable?
The price and inventory of SP370251060XTMA3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SP370251060XTMA3 is usually 5 days.
3.What payment methods are accepted for SP370251060XTMA3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SP370251060XTMA3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SP370251060XTMA3?
SP370251060XTMA3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SP370251060XTMA3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SP370251060XTMA3?
For technical support, including SP370251060XTMA3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SP370251060XTMA3 requirements.
6.How does Aetrix verify that SP370251060XTMA3 is sourced from the original manufacturer or authorized distributors?
All SP370251060XTMA3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SP370251060XTMA3 meets industry standards.
7.What is the process for return or replacement of SP370251060XTMA3?
All SP370251060XTMA3 units undergo pre-shipment inspection (PSI). If there is an issue with SP370251060XTMA3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SP370251060XTMA3 part is unused and in its original packaging.
Return procedure for SP370251060XTMA3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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