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Infineon Technologies KP123XTMA1
- Part No.:
- KP123XTMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-SMD Module
- Datasheet:
-
KP123XTMA1.pdf
- Description:
- SENSOR 16.68PSIA 4.85V DSOF8
- Quantity:
- Payment:
- Shipping:
Inventory:4,568
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Product details
Overview
KP123XTMA1 from Infineon Technologies is an absolute pressure sensor IC based on capacitive surface micromachining, featuring a monolithic BiCMOS signal conditioning circuit. It delivers ratiometric analog output (0.2 V to 4.7 V) over 15–115 kPa pressure range, ±1.5% FS accuracy, and on-board diagnostics for broken-wire detection-used in barometric air pressure (BAP) sensing for consumer-grade environmental monitoring.
For engineers reviewing the KP123XTMA1 datasheet, KP123XTMA1 pinout, KP123XTMA1 application, or KP123XTMA1 equivalent, key selection criteria include calibrated transfer function, OBD-enabled fault detection, supply-voltage ratiometry, temperature-compensated linearization, and green PG-DSOF-8-12 SMD packaging with dual GND terminals.
Technical Context
The KP123XTMA1 integrates a capacitive pressure-sensing array with digital linearization using third-order polynomial calculation stored in 90+22-bit EEPROM. Its signal chain includes 10-bit ADC, 12-bit DAC, and temperature compensation logic that corrects offset/gain drift across operating temperature.
It supports serial test/programming via CLOCK/VPROG, DATA IN, and DATA OUT pins while delivering analog output on VOUT referenced to VDD. On-board diagnostics (OBD) uses JFET-based open-circuit detection-output saturates near VDD or GND under wiring faults-enabling fail-safe microcontroller interpretation without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 15 kPa to 115 kPa absolute-covers full barometric range for altitude and weather sensing. |
| Output Voltage | 0.2 V to 4.7 V ratiometric-scales linearly with VDD, eliminating need for separate reference voltage. |
| Accuracy | ±1.5% Full Scale Range-includes nonlinearity, hysteresis, and temperature-induced errors over −40°C to +125°C. |
| Supply Voltage | 4.5 V to 5.5 V-compatible with standard 5 V microcontroller I/O domains and power rails. |
| Operating Temp | −40°C to +125°C junction-supports automotive cabin and industrial ambient environments. |
| OBD Function | Detects open GND or VOUT wiring-forces output to rail voltages for unambiguous fault signaling. |
| Package | PG-DSOF-8-12 with integrated cap-green, lead-free, surface-mountable housing optimized for cost-sensitive BAP modules. |
Pinout & Package
Package: PG-DSOF-8-12 - 8-pin, small-outline flat no-lead package with integrated protective cap and dual ground terminals for improved EMC and thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 TEST | Digital test access | Used only during factory calibration; must remain floating in end application. |
| 2 CLOCK / VPROG | Serial interface clock or programming voltage input | Enables EEPROM configuration; not used in normal analog operation mode. |
| 3 DATA IN | Serial programming data input | Active only during calibration; left unconnected in deployed systems. |
| 4 DATA OUT | Serial programming data output | Provides readback of calibration data; inactive during analog sensing. |
| 5 VDD | Positive supply rail | Power source for internal BiCMOS circuitry and sensor excitation (4.5–5.5 V). |
| 6 GND | Main circuit ground | Primary 0 V reference; both GND pins (6 & 8) must be connected for stable operation. |
| 7 VOUT | Analog pressure output | Ratiometric voltage proportional to applied pressure; drives high-impedance ADC inputs directly. |
| 8 GND | Secondary ground terminal | Reduces ground loop noise and improves OBD reliability; mandatory connection per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Calibrated transfer function | Third-order polynomial linearization stored in EEPROM ensures consistent 0.2–4.7 V output across pressure and temperature without host-side correction. |
| On-board diagnostics (OBD) | JFET-based open-wire detection provides immediate rail-saturation output under GND or VOUT disconnection-no external components needed. |
| Ratiometric analog output | VOUT scales directly with VDD, eliminating sensitivity to supply ripple and enabling use with noisy or unregulated 5 V rails. |
| Green PG-DSOF-8-12 package | Lead-free, halogen-free SMD housing meets RoHS and ELV requirements while supporting automated reflow assembly at consumer cost targets. |
| Temperature compensation | Internal coefficients for offset and gain drift are factory-programmed, maintaining ±1.5% FS accuracy from −40°C to +125°C. |
Applications
| Weather Station Barometric Sensing | Automotive Cabin Pressure Monitoring |
|---|---|
Use Scenario: Measuring atmospheric pressure changes for local weather forecasting and altitude estimation in portable weather stations. IC Role / Device Role / Timing Role: Absolute pressure transducer providing calibrated analog voltage output synchronized to system MCU sampling rate. Use Value: Enables sub-1 hPa resolution with factory-trimmed linearity, reducing firmware calibration burden and improving long-term drift stability. | Use Scenario: Detecting cabin pressure differentials during HVAC operation and altitude transitions in passenger vehicles. IC Role / Device Role / Timing Role: Primary barometric reference for climate control algorithms and occupant comfort optimization. Use Value: Dual-GND layout and OBD support ensure robustness against automotive EMI and wiring faults in harsh harness environments. |
| Consumer Drones – Altitude Hold | Industrial Air Quality Monitors |
Use Scenario: Providing real-time barometric pressure input for closed-loop altitude stabilization in multirotor UAVs. IC Role / Device Role / Timing Role: High-sensitivity pressure front-end feeding into flight controller ADC with minimal signal conditioning. Use Value: Ratiometric output eliminates need for precision voltage reference, simplifying PCB design and lowering BOM cost. | Use Scenario: Long-duration indoor/outdoor air quality logging where pressure normalization improves gas concentration accuracy. IC Role / Device Role / Timing Role: Stable absolute reference for compensating electrochemical sensor outputs across seasonal temperature swings. Use Value: ±1.5% FS accuracy over −40°C to +125°C enables reliable operation without active heater or thermal enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BMP280 (Bosch) | Digital I²C/SPI output; integrated temperature sensor; no OBD; ±1.0 hPa typical accuracy. | Requires host MCU for compensation math; better suited for compact IoT nodes with digital interfaces. | Select if digital interface, lower power, or co-located temperature measurement are priorities over analog simplicity and fault detection. |
| MPX5700 (NXP) | Analog output; 0–700 kPa range; ±2.5% FS accuracy; no EEPROM calibration or OBD. | Designed for higher-pressure industrial manifolds; lacks built-in diagnostics and wide-temp compensation. | Choose only for non-critical 5 V analog systems where barometric range is irrelevant and cost is secondary to availability. |
Compared with BMP280 and MPX5700, the KP123XTMA1 uniquely combines factory-calibrated analog output, on-board diagnostics, and barometric-optimized accuracy in a green SMD package-making it optimal for cost-sensitive, safety-aware consumer and automotive BAP applications requiring plug-and-play analog integration.
Availability
KP123XTMA1 is available at Aetrix Electronics and suitable for barometric air pressure sensing, drone altitude hold, and automotive cabin pressure monitoring requiring stable component supply and long-lifecycle support.
Supply support for KP123XTMA1 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 AG is a German semiconductor manufacturer specializing in power management, sensor, and automotive ICs, with global R&D and manufacturing infrastructure.
The KP123 belongs to Infineon's "XENSIV™" pressure sensor family (though branded pre-XENSIV), engineered specifically for high-accuracy, low-cost barometric pressure measurement in consumer and light automotive applications.
FAQ
Is KP123XTMA1 compatible with 3.3 V microcontrollers?
No-KP123XTMA1 requires 4.5 V to 5.5 V supply and produces a ratiometric output scaled to VDD. Driving it from 3.3 V violates absolute maximum ratings and yields invalid output voltage (below 0.2 V). A 5 V LDO or dedicated rail is mandatory for proper operation and specified accuracy.
Does KP123XTMA1 require external calibration during system integration?
No-KP123XTMA1 is fully factory-calibrated. All linearization coefficients, temperature compensation parameters, and offset/gain trims are stored in on-chip EEPROM. The device delivers accurate analog output immediately after power-up with no host-side calibration required.
What is the purpose of the TEST, CLOCK/VPROG, and DATA pins?
These pins serve exclusively for factory calibration and programming. They are not functional during normal operation. Infineon recommends leaving TEST, CLOCK/VPROG, and DATA IN/OUT pins unconnected (floating) in end-product designs to avoid noise coupling or unintended EEPROM access.
How does the On Board Diagnostics (OBD) feature detect wiring faults?
OBD uses internal JFETs that become conductive when VDD is present but GND or VOUT is disconnected. This pulls VOUT strongly toward VDD (open GND) or GND (open VOUT), producing rail-saturated output voltages outside the valid 0.2–4.7 V range-enabling simple MCU threshold-based fault detection without additional circuitry.
KP123XTMA1 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:
- Absolute
- Operating Pressure:
- 2.18PSI ~ 16.68PSI (15kPa ~ 115kPa)
- Output Type:
- Analog Voltage
- Output:
- 0.1 V ~ 4.85 V
- Accuracy:
- ±1.5%
- Voltage - Supply:
- 4.5V ~ 5.5V
- Port Size:
- -
- Port Style:
- No Port
- Features:
- Amplified Output, Temperature Compensated
- Termination Style:
- SMD (SMT) Tab
- Maximum Pressure:
- -
- Operating Temperature:
- -20°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
KP123XTMA1 FAQ
1.How can I place an order for KP123XTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for KP123XTMA1 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 KP123XTMA1 reliable?
The price and inventory of KP123XTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KP123XTMA1 is usually 5 days.
3.What payment methods are accepted for KP123XTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KP123XTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KP123XTMA1?
KP123XTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KP123XTMA1 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 KP123XTMA1?
For technical support, including KP123XTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KP123XTMA1 requirements.
6.How does Aetrix verify that KP123XTMA1 is sourced from the original manufacturer or authorized distributors?
All KP123XTMA1 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 KP123XTMA1 meets industry standards.
7.What is the process for return or replacement of KP123XTMA1?
All KP123XTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with KP123XTMA1, 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 KP123XTMA1 part is unused and in its original packaging.
Return procedure for KP123XTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KP123XTMA1 Tags
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DPS368XTSA1
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2511020213301
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