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Infineon Technologies KP464XTMA2
- Part No.:
- KP464XTMA2
- Manufacturer:
- Infineon Technologies
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-SMD, Flat Leads, Exposed Pad
- Datasheet:
-
KP464XTMA2.pdf
- Description:
- MEMS GROWTH
- Quantity:
- Payment:
- Shipping:
Inventory:4,362
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Product details
Overview
KP464XTMA2 from Infineon Technologies is a high-accuracy digital absolute pressure sensor based on capacitive sensing, delivering ±1.0 kPa pressure accuracy across 40–115 kPa range, operating from −40°C to +125°C, and providing 10-/12-/14-bit SPI-output pressure and temperature data for automotive barometric air pressure (BAP) and manifold airflow (MAF) systems.
For engineers reviewing the KP464XTMA2 datasheet, KP464XTMA2 pinout, KP464XTMA2 application, or KP464XTMA2 equivalent, this page delivers verified functional specifications, validated SPI interface behavior, AEC-Q103-002 qualification status, and real-world diagnostic capability implementation - all critical for automotive BMS, seat comfort, and industrial control design-in.
Technical Context
The KP464XTMA2 integrates monolithic capacitive pressure sensing cells with on-die temperature sensing and a fully digital signal conditioning path. Its SPI interface supports single-device and daisy-chain operation, with programmable EEPROM for calibration and configuration storage.
It implements two distinct self-diagnostic modes: full signal-path diagnosis triggered via SPI command, and automatic power-on diagnosis configurable via power_updiag_en bit. Power-down mode reduces quiescent current to ≤10 µA while retaining fast wake-up (<10 ms with diagnosis enabled).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 40–115 kPa absolute - covers full barometric range for altitude sensing and engine intake monitoring. |
| Pressure Accuracy | ±1.0 kPa - enables <10 m altitude resolution in altimeter applications and <1% airflow error in MAF systems. |
| Operating Temp | −40°C to +125°C ambient - qualified per AEC-Q103-002 for under-hood and battery-pack mounting. |
| SPI Resolution | 10-, 12-, or 14-bit selectable - allows trade-off between update rate (up to 1 kHz) and precision in resource-constrained controllers. |
| Power-Down Current | ≤10 µA - extends battery life in always-on automotive BMS and weather station nodes. |
| Diagnosis Capability | On-chip signal-path and EEPROM integrity checks - eliminates need for external validation circuitry in safety-critical designs. |
| Supply Voltage | 3.0–5.25 V - compatible with standard 3.3 V and 5 V automotive microcontroller I/O domains. |
Pinout & Package
Package: PG-DFN-8-1, 4.5 mm × 5.1 mm, 0.75 mm height, exposed thermal pad, RoHS-compliant green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NCS | Active-low chip select | Enables SPI communication only when pulled low; high-impedance SDO during NCS high. |
| CLK | Serial clock input | Accepts external clock up to 10 MHz; timing defined by tSU, tH, tV parameters in datasheet Rev. 1.20. |
| SDI | Serial data input | Receives SPI commands (e.g., read pressure, trigger diagnosis, enter power-down) from host controller. |
| SDO | Tri-state serial data output | Drives pressure/temperature data or identifier response; high-Z when NCS high or during command execution. |
| VDD | Supply voltage input | 3.0–5.25 V nominal; includes internal regulator and undervoltage reset (2.1–2.7 V threshold). |
| VPROG | EEPROM programming voltage | Required only during factory or field reprogramming; not used in normal operation. |
| NC | No connect | Internally un-bonded; must be left floating or tied to GND per layout guidelines. |
| GND | Ground reference | Primary return path for analog and digital circuits; connected to exposed thermal pad for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Temperature Sensing | On-die sensor provides correlated 10-/12-/14-bit temperature data synchronized with pressure reads - eliminates need for external thermistor calibration. |
| Configurable Power-Down Mode | Quiescent current ≤10 µA with <5 ms wake-up (no diagnosis) or <10 ms (with diagnosis) - enables ultra-low-power duty-cycled sensing. |
| SPI Daisy-Chain Support | Multiple KP464XTMA2 devices share CLK/SDI/NCS lines with individual SDO routing - reduces MCU GPIO count in multi-sensor modules. |
| Signal Path Diagnosis | Full internal test of pressure cell capacitance, ADC chain, and digital logic triggered by SPI command - satisfies ISO 26262 ASIL-B diagnostic coverage requirements. |
| Factory-Calibrated EEPROM | Stores device-specific pressure/temperature transfer function coefficients and configuration bits - ensures plug-and-play accuracy without host-side compensation. |
Applications
| Automotive Barometric Air Pressure (BAP) | Automotive Manifold Air Flow (MAF) |
|---|---|
|
Use Scenario: Mounted in vehicle cabin or engine bay to monitor ambient pressure for altitude-based engine control and HVAC compensation. IC Role / Device Role / Timing Role: Absolute pressure transducer providing calibrated digital output at 10–100 Hz update rate via SPI. Use Value: ±1.0 kPa accuracy enables <10 m altitude resolution, supporting precise turbo boost control and emissions optimization. |
Use Scenario: Installed upstream of throttle body to measure intake air mass flow using differential pressure across a venturi or hot-wire element. IC Role / Device Role / Timing Role: High-stability absolute reference sensor for differential calculation; operates continuously at 1 kHz sampling. Use Value: −40°C to +125°C operation ensures reliability during cold start and wide-load transient conditions without drift-induced airflow error. |
| Automotive Battery Monitoring System (BMS) | Industrial Weather Station |
|
Use Scenario: Integrated into 12 V/48 V battery enclosures to detect enclosure pressure changes indicating thermal runaway or seal failure. IC Role / Device Role / Timing Role: Low-power pressure anomaly detector; wakes periodically from power-down mode to sample pressure delta. Use Value: ≤10 µA quiescent current enables years of operation on backup coin-cell supply; integrated diagnosis validates sensor health before each reading. |
Use Scenario: Deployed in outdoor environmental sensors for long-term barometric trend logging and storm prediction algorithms. IC Role / Device Role / Timing Role: Primary atmospheric pressure measurement node with temperature-compensated output delivered over SPI to MCU or LoRaWAN module. Use Value: AEC-Q103 qualification ensures >15-year field stability under UV exposure and thermal cycling; green DFN package resists moisture ingress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BMP388 (Bosch) | ±0.08 hPa (±0.008 kPa) typical accuracy; I²C/SPI; no integrated diagnostics; 2.0 × 2.0 mm LGA-8 package. | Lacks AEC-Q103 qualification and on-chip signal-path diagnosis; suited for consumer drones, not automotive safety systems. | Select if ultra-high resolution and small footprint outweigh need for automotive-grade reliability and built-in diagnostics. |
| MPX5700 (NXP) | Analog output (ratiometric 0.2–4.7 V); requires external ADC; ±2.0 kPa accuracy; −40°C to +125°C; 8-pin SOIC. | No digital interface or embedded intelligence; demands additional signal conditioning and calibration effort. | Select only for legacy analog designs where MCU lacks SPI or cost sensitivity precludes digital sensor adoption. |
Compared with BMP388 and MPX5700, the KP464XTMA2 uniquely combines AEC-Q103 qualification, on-chip diagnostics, SPI-configurable resolution, and ≤10 µA power-down current - making it the only drop-in solution for ASIL-B-compliant automotive pressure monitoring where functional safety and low power are co-primary requirements.
Availability
KP464XTMA2 is available at Aetrix Electronics and suitable for automotive barometric air pressure (BAP), battery monitoring system (BMS), and industrial weather station applications requiring stable component supply, long-lifecycle support, and AEC-Q103-qualified traceability.
Supply support for KP464XTMA2 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 R&D and manufacturing infrastructure supporting automotive-grade reliability.
The KP464XTMA2 belongs to Infineon's XENSIV™ pressure sensor family, engineered specifically for high-accuracy, safety-critical automotive and industrial pressure measurement where robustness, diagnostics, and long-term stability are mandatory.
FAQ
What is the maximum SPI clock frequency supported by KP464XTMA2?
The KP464XTMA2 supports SPI clock frequencies up to 10 MHz, as specified in Section 4.1.5 "SPI timing" of the Rev. 1.20 datasheet. Timing parameters include minimum setup (tSU = 20 ns), hold (tH = 20 ns), and valid data window (tV = 20 ns) - enabling reliable communication with modern automotive MCUs such as Infineon's AURIX™ TC3xx series without external level-shifting.
Does KP464XTMA2 require external calibration during system integration?
No. The KP464XTMA2 ships with factory-programmed EEPROM containing device-specific pressure and temperature transfer function coefficients, enabling direct use of raw SPI output without host-side linearization or temperature compensation. Calibration data is retained across power cycles and survives >100k write/erase cycles.
How does the integrated diagnosis feature operate in practice?
The diagnosis is initiated by sending the 0x80 SPI command, which triggers simultaneous testing of pressure cell capacitance, ADC functionality, and digital signal path integrity. Results are returned in the next SPI response byte; a pass/fail flag and diagnostic code indicate whether sensor cell degradation or signal chain fault is detected - usable for periodic health checks in ASIL-B software routines.
Is the exposed thermal pad on the DFN package required to be soldered to PCB ground?
Yes. The exposed thermal pad (pin 9, not numbered in 8-pin map) must be soldered to a dedicated GND copper pour with ≥4 thermal vias (0.3 mm diameter) to achieve specified RthJA (250–350 K/W) and ensure stable operation at +125°C ambient. Leaving it unconnected degrades thermal performance and may cause parametric drift beyond datasheet limits.
KP464XTMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- XENSIV™
- Package/Case:
- 8-SMD, Flat Leads, Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Industrial Automation
- Pressure Type:
- Absolute
- Operating Pressure:
- 5.8PSI ~ 16.68PSI (40kPa ~ 115kPa)
- Output Type:
- SPI
- Output:
- 14 b
- Accuracy:
- ±0.145PSI (±1kPa)
- Voltage - Supply:
- 3V ~ 5.25V
- Port Size:
- -
- Port Style:
- No Port
- Features:
- -
- Termination Style:
- -
- Maximum Pressure:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q103-002
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DFN-8-1
KP464XTMA2 FAQ
1.How can I place an order for KP464XTMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for KP464XTMA2 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 KP464XTMA2 reliable?
The price and inventory of KP464XTMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KP464XTMA2 is usually 5 days.
3.What payment methods are accepted for KP464XTMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KP464XTMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KP464XTMA2?
KP464XTMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KP464XTMA2 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 KP464XTMA2?
For technical support, including KP464XTMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KP464XTMA2 requirements.
6.How does Aetrix verify that KP464XTMA2 is sourced from the original manufacturer or authorized distributors?
All KP464XTMA2 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 KP464XTMA2 meets industry standards.
7.What is the process for return or replacement of KP464XTMA2?
All KP464XTMA2 units undergo pre-shipment inspection (PSI). If there is an issue with KP464XTMA2, 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 KP464XTMA2 part is unused and in its original packaging.
Return procedure for KP464XTMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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