My Inquiry
My Account
Infineon Technologies KP256XTMA1
- Part No.:
- KP256XTMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-SMD Module
- Datasheet:
-
KP256XTMA1.pdf
- Description:
- SENSOR BAROMETRIC DSOF8
- Quantity:
- Payment:
- Shipping:
Inventory:4,336
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
KP256XTMA1 from Infineon Technologies is a digital absolute pressure sensor IC based on capacitive MEMS sensing with monolithic BiCMOS signal conditioning. It delivers 10-bit pressure (0–110 kPa) and 10-bit temperature (−40°C to +125°C) data via SPI interface, features ±1.0 kPa total accuracy over temperature, integrated self-diagnostic capability, and operates from 3.1 V to 5.5 V supply - deployed in automotive barometric altitude sensing and industrial environmental monitoring.
For engineers reviewing the KP256XTMA1 datasheet, KP256XTMA1 pinout, KP256XTMA1 application, or KP256XTMA1 equivalent, key selection considerations include SPI-compatible digital output resolution, automotive-grade reliability (AEC-Q100 qualified), diagnostic command support (Diag1/Diag2/E2PROM check), and PG-DSOF-8-16 package compatibility with PCB-level pressure porting.
Technical Context
The KP256 implements a capacitive pressure-sensing element with on-chip BiCMOS analog front-end and digital signal processing. Its transfer function maps absolute pressure linearly to a 10-bit unsigned integer (0x000–0x3FF) with factory-trimmed offset and sensitivity coefficients stored in EEPROM.
Temperature measurement uses an integrated on-die sensor, also digitized to 10 bits, enabling real-time thermal compensation of pressure readings. The SPI interface supports both single-device and daisy-chain configurations with configurable clock polarity/phase and parity-enabled command framing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 0 kPa to 110 kPa absolute - covers sea-level to ~3000 m altitude, suitable for barometric and altimeter use. |
| Pressure Accuracy | ±1.0 kPa total error (including offset, sensitivity, nonlinearity, hysteresis, temp. drift) - enables <±10 m altitude resolution. |
| Output Resolution | 10-bit digital (0x000–0x3FF) for both pressure and temperature - provides 0.107 kPa LSB and 0.125°C LSB granularity. |
| Supply Voltage | 3.1 V to 5.5 V - compatible with 3.3 V and 5 V microcontroller I/O domains without level-shifting. |
| Operating Temp. | −40°C to +125°C - meets AEC-Q100 Grade 2 requirements for under-hood automotive deployment. |
| SPI Interface | 4-wire, mode 0 (CPOL=0, CPHA=0), up to 10 MHz clock - supports deterministic timing for real-time acquisition. |
| Power-Down Current | ≤1 µA typical - enables battery-powered weather stations and portable altimeters with multi-week standby. |
Pinout & Package
Package: PG-DSOF-8-16 - 8-pin, lead-free, green SMD package with exposed thermal pad; designed for direct PCB mounting with pressure port access to underside cavity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NCS | Active-low chip select | Enables SPI communication when pulled low; high-impedance SDO during NCS high. |
| 2 CLK | Serial clock input | Master-generated clock (up to 10 MHz); sampled on rising edge for command/data latching. |
| 3 SDI | Serial data input | Receives SPI commands (e.g., Acquire Pressure, Diag Trigger) from host controller. |
| 4 SDO | Serial data output | Tri-state output delivering 10-bit pressure/temperature values or diagnostic responses. |
| 5 VDD | Supply voltage | Primary power rail (3.1–5.5 V); powers analog sensor, ADC, and digital logic blocks. |
| 6 VPROG | Programming voltage | Used only during factory calibration; must be tied to VDD or GND in end-user applications. |
| 7 GND | Ground reference | Analog and digital ground common point; requires low-impedance connection to PCB plane. |
| 8 NC | No connect | Internally unconnected pin; left floating or tied to GND per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated diagnostics | On-command execution of Diag1 (sensor cell test), Diag2 (signal path integrity), E2PROM checksum, and pressure-out-of-range detection. |
| Factory-calibrated transfer function | EEPROM-stored 2nd-order polynomial coefficients enable linearized pressure output without host-side compensation. |
| Low-power operation | Typical active current 300 µA at 5 V; power-down mode reduces current to ≤1 µA with full state retention. |
| Daisy-chain SPI support | Multiple KP256 devices share CLK/SDI/NCS lines with individual SDO routing - simplifies multi-sensor systems. |
| AEC-Q100 qualified | Qualified to Grade 2 (−40°C to +105°C ambient) with HTOL, TC, ESD, and mechanical stress testing per automotive standard. |
Applications
| Automotive Cabin Pressure Monitoring | Portable Altimeter Modules |
|---|---|
|
Use Scenario: Real-time cabin pressure tracking in HVAC control systems to detect door/window leaks and optimize air recirculation. IC Role / Device Role / Timing Role: Absolute pressure transducer providing 10-bit digital output every 100 ms via SPI for closed-loop feedback. Use Value: ±1.0 kPa accuracy enables detection of <0.5% cabin pressure deviation - critical for occupant comfort and energy efficiency. |
Use Scenario: Battery-powered handheld altimeters used in hiking, aviation training, and drone flight planning. IC Role / Device Role / Timing Role: Primary barometric sensor delivering calibrated pressure and temperature data for altitude calculation using ISA model. Use Value: 10-bit resolution and −40°C to +125°C operation ensure stable readings across mountainous terrain and varying ambient conditions. |
| Industrial Weather Station Nodes | Medical Respiratory Flow Sensors |
|
Use Scenario: Outdoor wireless weather stations measuring atmospheric pressure trends for forecasting and climate logging. IC Role / Device Role / Timing Role: Low-power digital pressure sensor operating in periodic wake-up mode (e.g., once per minute) with SPI-triggered acquisition. Use Value: ≤1 µA power-down current extends AA-battery life beyond 2 years while maintaining factory calibration integrity. |
Use Scenario: Integrated into spirometry and CPAP devices to monitor differential and absolute airway pressure during therapy. IC Role / Device Role / Timing Role: High-reliability absolute pressure transducer feeding real-time data to safety-critical control firmware. Use Value: AEC-Q100 qualification and built-in diagnostics satisfy IEC 60601-1 essential performance requirements for medical pressure sensing. |
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 |
|---|---|---|---|
| BMP280 (Bosch) | 24-bit pressure output, I²C/SPI interface, no integrated diagnostics, ±0.12 hPa (±0.012 kPa) typical accuracy. | Lacks on-chip diagnosis and AEC-Q100 qualification; optimized for consumer IoT, not automotive safety-critical use. | Select BMP280 only if higher resolution and lower cost outweigh need for automotive reliability and fault reporting. |
| MS5637 (TE Connectivity) | I²C-only interface, 24-bit output, ±1.5 mbar (±0.15 kPa) accuracy, no power-down mode below 1 µA. | Smaller footprint (6-pin LGA), but lacks SPI daisy-chain support and fails AEC-Q100 qualification. | Choose MS5637 for space-constrained consumer wearables where I²C suffices and diagnostic coverage is non-mandatory. |
Compared with BMP280 and MS5637, KP256XTMA1 uniquely combines AEC-Q100 qualification, SPI daisy-chain capability, sub-µA power-down, and production-ready diagnostics - making it the only option qualified for automotive cabin pressure control and medical respiratory monitoring where functional safety evidence is required.
Availability
KP256XTMA1 is available at Aetrix Electronics and suitable for automotive cabin pressure monitoring, portable altimeter modules, and industrial weather station nodes requiring stable component supply, long-term calibration retention, and traceable sourcing.
Supply support for KP256XTMA1 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 and IATF 16949.
KP256XTMA1 belongs to Infineon's XENSIV™ pressure sensor family, engineered specifically for high-accuracy, automotive-qualified absolute pressure measurement in safety-relevant and environmentally demanding applications.
FAQ
Does KP256XTMA1 require external calibration during system integration?
No. KP256XTMA1 ships fully calibrated with factory-programmed offset and sensitivity coefficients stored in on-chip EEPROM. Host firmware reads these coefficients via SPI identifier command and applies them directly to raw 10-bit outputs - eliminating field calibration steps and reducing production test time.
Can KP256XTMA1 operate in daisy-chain configuration with mixed device types?
No. Daisy-chain operation requires identical KP256XTMA1 devices sharing CLK, NCS, and SDI lines, with individual SDO lines routed separately. The protocol does not support mixing with other sensors or variants - all devices in the chain must respond identically to Acquire Pressure and Diag commands.
What is the mechanical mounting requirement for accurate pressure measurement?
KP256XTMA1 must be mounted with its pressure port (underside cavity) exposed to the measured medium through a dedicated PCB vent hole or gasket-sealed port. The PG-DSOF-8-16 package requires solder reflow per JEDEC J-STD-020, and mechanical stress on the package body must be avoided to prevent zero-point drift.
How does the diagnostic mode verify sensor integrity?
KP256XTMA1 executes Diag1 by applying controlled electrostatic actuation to the MEMS diaphragm and verifying response amplitude; Diag2 checks analog signal chain gain/offset consistency; E2PROM Check validates calibration data CRC. All diagnostics return pass/fail status via SPI within 20 ms of command issuance.
KP256XTMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SMD Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSOF-8-16
KP256XTMA1 FAQ
1.How can I place an order for KP256XTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for KP256XTMA1 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 KP256XTMA1 reliable?
The price and inventory of KP256XTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KP256XTMA1 is usually 5 days.
3.What payment methods are accepted for KP256XTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KP256XTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KP256XTMA1?
KP256XTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KP256XTMA1 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 KP256XTMA1?
For technical support, including KP256XTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KP256XTMA1 requirements.
6.How does Aetrix verify that KP256XTMA1 is sourced from the original manufacturer or authorized distributors?
All KP256XTMA1 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 KP256XTMA1 meets industry standards.
7.What is the process for return or replacement of KP256XTMA1?
All KP256XTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with KP256XTMA1, 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 KP256XTMA1 part is unused and in its original packaging.
Return procedure for KP256XTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KP256XTMA1 Tags
-
DPS368XTSA1
Infineon Technologies
-
DPS310XTSA1
Infineon Technologies
-
LPS22HHTR
STMicroelectronics
-
ICP-20100
TDK InvenSense
-
ICP-10110
TDK InvenSense
-
LPS22DFTR
STMicroelectronics
-
LPS22HBTR
STMicroelectronics
-
BMP390
Bosch Sensortec
-
BMP581
Bosch Sensortec
-
BMP384
Bosch Sensortec
-
2511020213301
Würth Elektronik
-
ILPS22QSTR
STMicroelectronics
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
