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Infineon Technologies KP253XTMA2
- Part No.:
- KP253XTMA2
- Manufacturer:
- Infineon Technologies
- Category:
- Pressure Sensors, Transducers
- Package:
- -
- Datasheet:
-
KP253XTMA2.pdf
- Description:
- IC ANLG BAROMETRIC SNSR DSOF8
- Quantity:
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Inventory:2,094
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Product details
Overview
KP253XTMA2 from Infineon Technologies is a digital absolute pressure sensor IC implementing capacitive MEMS sensing with monolithic BiCMOS signal conditioning. It delivers 12-bit pressure (±1.0 kPa accuracy) and 12-bit temperature data via SPI interface, operates from 3.3 V or 5.0 V supply, and supports power-down mode for <1 µA standby current - deployed in automotive barometric altitude sensing and industrial environmental monitoring.
For engineers reviewing the KP253XTMA2 datasheet, KP253XTMA2 pinout, KP253XTMA2 application, or KP253XTMA2 equivalent, key selection criteria include SPI-compatible digital output resolution, integrated diagnostics, automotive-grade reliability (AEC-Q100 qualified), and PG-DSOF-8-16 surface-mount package compatibility with PCB-level pressure porting.
Technical Context
The KP253XTMA2 integrates a capacitive MEMS pressure transducer with on-chip BiCMOS analog front-end, ADC, digital logic, and SPI controller. Its transfer function maps absolute pressure (260–1260 hPa) linearly to a 12-bit unsigned integer output using factory-trimmed calibration coefficients stored in on-chip EEPROM.
Temperature compensation is performed digitally using co-located on-die thermal sensing and stored polynomial coefficients. Diagnostics include sensor cell integrity checks, EEPROM validation, and out-of-range detection - all triggered via dedicated SPI commands (e.g., Diag1/Diag2) without external hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 260–1260 hPa absolute - covers sea-level to ~11 km altitude, enabling altimeter and barometer use. |
| Pressure Accuracy | ±1.0 kPa over -40°C to +125°C - enables high-confidence atmospheric pressure tracking in automotive cabin or engine bay. |
| Output Resolution | 12-bit digital (0–4095) - provides 0.25 hPa LSB step size for fine-grained pressure change detection. |
| Supply Voltage | 3.3 V or 5.0 V ±5% - dual-rail support simplifies integration into legacy 5 V and modern low-voltage systems. |
| Standby Current | <1 µA in power-down mode - extends battery life in portable weather stations or IoT environmental sensors. |
| SPI Interface | 4-wire, master-slave, 10 MHz max clock - compatible with standard microcontroller SPI peripherals without level-shifting. |
| Operating Temp | -40°C to +125°C - meets AEC-Q100 Grade 2 requirements for under-hood automotive deployment. |
Pinout & Package
Package: PG-DSOF-8-16 - 8-pin, lead-free, green SMD package with exposed thermal pad; dimensions 4.0 × 4.0 × 1.2 mm; designed for PCB-mounted pressure porting via backside cavity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NCS | Active-low chip select | Enables SPI communication when pulled low; high-impedance SDO when high. |
| 2 CLK | SPI clock input | Accepts up to 10 MHz external clock; timing-critical for command/response synchronization. |
| 3 SDI | SPI data input | Receives 8-bit SPI commands (e.g., Acquire Pressure, Diag1, Power-Down). |
| 4 SDO | SPI data output | Tri-state output delivering 12-bit pressure/temperature data or diagnostic status codes. |
| 5 VDD | Positive supply rail | Supports 3.3 V or 5.0 V; internal LDO regulates analog/digital domains. |
| 6 VPROG | Programming voltage | Required only during factory calibration; tied to VDD in end-user applications. |
| 7 GND | Ground reference | Common return for analog/digital circuits; must be low-impedance for noise immunity. |
| 8 NC | No connect | Internally unconnected; left floating or grounded per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated diagnostics | On-demand self-test of sensor element, signal chain, and EEPROM via SPI command - eliminates need for external test fixtures. |
| Dual-sensing capability | Simultaneous 12-bit pressure and 12-bit temperature outputs - enables real-time thermal compensation without secondary sensors. |
| Automotive qualification | AEC-Q100 Grade 2 certified - validated for vibration, thermal cycling, and ESD robustness in vehicle environments. |
| Low-power operation | Configurable power-down mode with <1 µA quiescent current - suitable for battery-powered altimeters and wearables. |
| Factory-calibrated output | Linearized 12-bit digital output with stored calibration coefficients - removes need for system-level linearization firmware. |
Applications
| Automotive Cabin Pressure Monitoring | Portable Weather Station |
|---|---|
Use Scenario: Real-time cabin pressure tracking during HVAC operation and altitude changes on highways or mountain roads. IC Role / Device Role / Timing Role: Absolute pressure transducer providing calibrated 12-bit digital output every 100 ms via SPI. Use Value: Enables automatic air recirculation control and occupant comfort optimization based on detected pressure differentials. |
Use Scenario: Handheld or solar-powered outdoor weather station measuring local barometric pressure trends. IC Role / Device Role / Timing Role: Primary barometric sensor delivering temperature-compensated pressure readings at 1 Hz sampling rate. Use Value: Provides ±1.0 kPa accuracy required for short-term weather forecasting and storm detection algorithms. |
| Industrial Altitude Sensing | Medical Respiratory Monitoring |
Use Scenario: Altitude-based safety interlock in automated material handling equipment operating across multi-floor facilities. IC Role / Device Role / Timing Role: High-stability absolute pressure sensor feeding altitude calculation engine in PLC or embedded controller. Use Value: Delivers stable 260–1260 hPa range coverage with minimal drift over temperature, ensuring floor-level detection accuracy. |
Use Scenario: Non-invasive respiratory flow estimation in portable spirometers or CPAP devices. IC Role / Device Role / Timing Role: Differential-capable absolute pressure sensor capturing inhalation/exhalation pressure waveforms at ≥100 Hz. Use Value: Leverages 12-bit resolution and fast SPI response to resolve sub-Pa pressure variations critical for tidal volume computation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital barometric pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BMP280 (Bosch) | 24-bit pressure output, I²C/SPI interface, no integrated diagnostics; ±0.12 hPa typical accuracy. | Lacks on-chip self-test; requires external temperature compensation in high-accuracy use cases. | Preferred where ultra-high resolution outweighs diagnostic needs and AEC-Q100 compliance is not required. |
| MS5637 (TE Connectivity) | I²C-only interface, 24-bit output, ±1.5 mbar accuracy, no power-down mode below 1 µA. | Higher baseline accuracy but lacks automotive qualification and failsafe diagnostics. | Selected for consumer drones or handheld devices prioritizing size and resolution over functional safety features. |
Compared with BMP280 and MS5637, the KP253XTMA2 trades raw resolution for automotive-grade reliability, integrated diagnostics, and deterministic SPI timing - making it optimal for safety-aware systems where verification traceability and failure-mode coverage are mandatory.
Availability
KP253XTMA2 is available at Aetrix Electronics and suitable for automotive cabin monitoring, portable weather instrumentation, and industrial altitude sensing requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for KP253XTMA2 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, sensor, and automotive ICs, with global manufacturing and quality certification to ISO/TS 16949.
The KP253XTMA2 belongs to Infineon's XENSIV™ pressure sensor family, engineered specifically for high-reliability barometric and altimetric measurement in automotive and industrial environments where precision, diagnostics, and environmental resilience are critical.
FAQ
What is the recommended PCB layout for KP253XTMA2 to ensure accurate pressure measurement?
Mount the device with the pressure port side facing an unobstructed air path; avoid solder mask over the backside cavity. Use a minimum 2 mm clearance around the package edge, ground the thermal pad with ≥4 vias to inner ground plane, and route SPI lines away from noisy power traces to prevent coupling-induced readout errors.
Does KP253XTMA2 require external calibration after soldering?
No. The KP253XTMA2 performs full factory calibration including offset, sensitivity, and temperature coefficients, stored in on-chip EEPROM. Post-soldering drift is compensated by its integrated temperature sensor and digital correction algorithm - no user calibration is needed.
How does the diagnostic mode verify sensor integrity?
The Diag1 command tests the MEMS capacitor's electrical continuity and charge-transfer behavior; Diag2 validates the analog signal chain and EEPROM integrity. Both return status codes via SDO, enabling firmware to flag faults before pressure data is used in safety-critical decisions.
Can KP253XTMA2 operate in differential pressure mode?
No. The KP253XTMA2 is an absolute pressure sensor with a sealed reference cavity. It measures pressure relative to vacuum, not between two ports. For differential applications, Infineon's KP123 or KP133 series are designated alternatives with dual-port packaging.
KP253XTMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Board Mount
- Pressure Type:
- -
- Operating Pressure:
- -
- Output Type:
- -
- Output:
- -
- Accuracy:
- -
- Voltage - Supply:
- -
- Port Size:
- -
- Port Style:
- -
- Features:
- -
- Termination Style:
- -
- Maximum Pressure:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
KP253XTMA2 FAQ
1.How can I place an order for KP253XTMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for KP253XTMA2 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 KP253XTMA2 reliable?
The price and inventory of KP253XTMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KP253XTMA2 is usually 5 days.
3.What payment methods are accepted for KP253XTMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KP253XTMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KP253XTMA2?
KP253XTMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KP253XTMA2 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 KP253XTMA2?
For technical support, including KP253XTMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KP253XTMA2 requirements.
6.How does Aetrix verify that KP253XTMA2 is sourced from the original manufacturer or authorized distributors?
All KP253XTMA2 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 KP253XTMA2 meets industry standards.
7.What is the process for return or replacement of KP253XTMA2?
All KP253XTMA2 units undergo pre-shipment inspection (PSI). If there is an issue with KP253XTMA2, 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 KP253XTMA2 part is unused and in its original packaging.
Return procedure for KP253XTMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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