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Infineon Technologies KP126N6165
- Part No.:
- KP126N6165
- Manufacturer:
- Infineon Technologies
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-SMD Module
- Datasheet:
-
KP126N6165.pdf
- Description:
- SENSOR 23.93PSIA 4.8V DSOF8
- Quantity:
- Payment:
- Shipping:
Inventory:1,928
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Product details
Overview
KP126N6165 from Infineon Technologies is an absolute pressure sensor IC based on capacitive surface micromachining, featuring ratiometric analog output (0.2 V to 4.8 V), calibrated transfer function for 60–165 kPa range, ±1.0 kPa maximum error, and integrated On Board Diagnostics (OBD) for broken-wire detection in automotive barometric air pressure (BAP) measurement.
For engineers reviewing the KP126N6165 datasheet, KP126N6165 pinout, KP126N6165 application, or KP126N6165 equivalent, key selection criteria include its ratiometric voltage output, EEPROM-stored calibration coefficients, BiCMOS signal conditioning, OBD fault signaling behavior, and PG-DSOF-8-12 SMD package with dual GND pins.
Technical Context
The KP126N6165 integrates a capacitive pressure-sensing array with monolithic BiCMOS signal conditioning, including 10-bit ADC, 12-bit DAC, digital linearization using third-order polynomial calculation, and temperature compensation derived from on-chip thermal sensing. Calibration parameters - offset, gain, temperature coefficients, and linearization coefficients - are factory-programmed into 90+22-bit internal EEPROM.
OBD functionality relies on JFET-based self-conducting behavior under supply faults: open GND pulls VOUT toward VDD; open VDD pulls VOUT toward GND. The analog output remains ratiometric to VDD across operating temperature (−40 °C to +125 °C) and supply (4.75 V to 5.25 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 60 kPa to 165 kPa - supports full barometric air pressure (BAP) measurement across altitude and weather conditions. |
| Output Voltage | 0.2 V to 4.8 V ratiometric - scales linearly with VDD; enables direct ADC interfacing without external reference. |
| Accuracy | ±1.0 kPa max total error - includes nonlinearity, hysteresis, repeatability, and temperature drift over −40 °C to +125 °C. |
| Supply Voltage | 4.75 V to 5.25 V - tight tolerance ensures stable ratiometric operation and OBD fault detection thresholds. |
| Operating Temp | −40 °C to +125 °C - qualified for under-hood automotive environments and industrial ambient conditions. |
| Package | PG-DSOF-8-12 - green RoHS-compliant 8-pin SMD housing with cap, optimized for cost-sensitive BAP applications. |
Pinout & Package
Package: PG-DSOF-8-12 - leadless, 8-terminal surface-mount package with integrated cap, designed for high-volume automotive sensor assembly and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 TEST | Digital test interface | Used only during factory calibration; must be left floating in end application to avoid interference. |
| 2 CLOCK / VPROG | Serial clock input / programming voltage | Enables EEPROM programming during test; not used in normal operation. |
| 3 DATA IN | Serial data input | Configures internal registers during calibration; no functional role in deployed system. |
| 4 DATA OUT | Serial data output | Reads calibration data during test; inactive during analog output mode. |
| 5 VDD | Positive supply rail | Provides power and reference for ratiometric output; tolerance ±2.5% critical for accuracy. |
| 6 GND | Main circuit ground | Primary return path; both GND pins (6 and 8) must be connected for OBD integrity and noise immunity. |
| 7 VOUT | Analog pressure output | Ratiometric voltage proportional to applied pressure; drives 10 kΩ minimum load per datasheet. |
| 8 GND | Secondary ground terminal | Redundant ground connection required to ensure OBD fault detection reliability and thermal stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ratiometric analog output | Eliminates need for external voltage reference; output scaling automatically tracks VDD variations within ±2.5%. |
| Factory-calibrated transfer function | Third-order polynomial linearization stored in EEPROM enables <1.0 kPa error without host-side compensation. |
| On Board Diagnostics (OBD) | JFET-based open-circuit detection on VDD or GND causes VOUT saturation to rail, enabling microcontroller-level fault flagging. |
| BiCMOS monolithic integration | Combines capacitive sensing element and signal conditioning on single die, minimizing inter-die drift and packaging-induced stress errors. |
Applications
| Automotive Barometric Air Pressure (BAP) | Engine Control Unit (ECU) Intake Monitoring |
|---|---|
Use Scenario: Measuring ambient atmospheric pressure for altitude correction and air mass calculation in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Absolute pressure transducer providing primary BAP feedback to ECU's air-fuel ratio algorithm. Use Value: ±1.0 kPa accuracy enables precise volumetric efficiency modeling across −40 °C to +125 °C, improving fuel economy by up to 2.1% in real-world driving cycles. | Use Scenario: Real-time intake manifold pressure monitoring during transient throttle events and turbocharger boost control. IC Role / Device Role / Timing Role: High-stability analog pressure sensor feeding closed-loop boost pressure regulation logic. Use Value: Ratiometric output and OBD support reduce ECU ADC resource usage and enable fail-safe limp-home mode activation upon wiring fault detection. |
| Industrial Altitude Sensing | Weather Station Barometric Module |
Use Scenario: Embedded altitude tracking in UAV flight controllers and industrial HVAC zoning systems requiring long-term drift stability. IC Role / Device Role / Timing Role: Primary absolute pressure reference for altitude computation via ISA standard model. Use Value: Factory EEPROM calibration eliminates field recalibration; −40 °C to +125 °C operation ensures reliability in uncontrolled enclosures. | Use Scenario: Low-power, high-accuracy barometric pressure logging in battery-operated environmental monitoring stations. IC Role / Device Role / Timing Role: Standalone analog pressure sensor interfaced to ultra-low-power MCU ADC with sleep-mode wake-on-change capability. Use Value: Green PG-DSOF-8-12 package and 4.75–5.25 V supply range simplify PCB layout and reduce bill-of-materials vs. discrete sensor + ASIC solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPX5700AP | 70 kPa to 105 kPa range; 0.2–4.8 V output; no EEPROM or OBD; requires external compensation. | Limited to lower-pressure consumer HVAC; lacks automotive-grade diagnostics and extended BAP range. | Select when cost sensitivity outweighs diagnostic needs and pressure range stays below 105 kPa. |
| BMP280 | I²C digital output; ±0.12 hPa typical accuracy; integrated temperature sensor; no analog ratiometric output. | Suitable for IoT/weather nodes with MCU processing; incompatible with legacy analog ECU inputs. | Choose for digital systems needing higher resolution and lower power; not drop-in for KP126N6165 analog interfaces. |
Compared with MPX5700AP and BMP280, the KP126N6165 uniquely delivers automotive-qualified analog ratiometric output across full barometric range with built-in OBD and factory linearization - eliminating host-side compensation while ensuring wiring fault visibility in safety-critical deployments.
Availability
KP126N6165 is available at Aetrix Electronics and suitable for automotive engine control, industrial altitude sensing, weather station instrumentation, and consumer HVAC requiring stable component supply and long-lifecycle availability.
Supply support for KP126N6165 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, automotive electronics, and sensor solutions, with global R&D and manufacturing infrastructure.
The KP126N6165 belongs to Infineon's XENSIV™ pressure sensor family, engineered specifically for high-accuracy, cost-optimized absolute pressure measurement in automotive and industrial environments where analog interface simplicity and diagnostic robustness are critical.
FAQ
What is the recommended load impedance for KP126N6165 VOUT?
The KP126N6165 VOUT pin is specified to drive a minimum load of 10 kΩ, as confirmed in Section 5.4.1 of the Rev 1.02 datasheet. Driving lower impedances may cause output voltage deviation beyond ±1.0 kPa accuracy due to internal output stage limitations. For optimal performance, connect directly to a high-impedance ADC input or buffer with rail-to-rail op-amp.
Does KP126N6165 require external calibration during system integration?
No. The KP126N6165 is fully factory-calibrated: all offset, gain, temperature coefficients, and third-order linearization parameters are measured post-assembly and permanently stored in its 90+22-bit internal EEPROM. No external calibration or host-side compensation is needed for achieving ±1.0 kPa accuracy across −40 °C to +125 °C.
How does the On Board Diagnostics (OBD) function detect a broken GND connection?
When GND is disconnected, the internal JFETs in the OBD stage become self-conducting, pulling VOUT strongly toward VDD (typically >4.5 V). This rail-saturation condition is detectable by the host microcontroller via voltage threshold monitoring, enabling immediate fault flagging without additional hardware.
Can KP126N6165 operate outside the 60–165 kPa pressure range?
The device is characterized and guaranteed only for 60–165 kPa. Operation below 60 kPa risks nonlinear response and increased error beyond ±1.0 kPa; above 165 kPa may cause mechanical stress on the capacitive diaphragm. For altitudes above ~4,500 m or vacuum applications, alternate sensors with wider or shifted ranges should be selected.
KP126N6165 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:
- 8.7PSI ~ 23.93PSI (60kPa ~ 165kPa)
- Output Type:
- Analog Voltage
- Output:
- 0.2 V ~ 4.8 V
- Accuracy:
- ±0.145PSI (±1kPa)
- 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:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
KP126N6165 FAQ
1.How can I place an order for KP126N6165 through Aetrix?
Please submit a Request for Quotation (RFQ) for KP126N6165 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 KP126N6165 reliable?
The price and inventory of KP126N6165 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KP126N6165 is usually 5 days.
3.What payment methods are accepted for KP126N6165?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KP126N6165 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KP126N6165?
KP126N6165 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KP126N6165 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 KP126N6165?
For technical support, including KP126N6165 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KP126N6165 requirements.
6.How does Aetrix verify that KP126N6165 is sourced from the original manufacturer or authorized distributors?
All KP126N6165 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 KP126N6165 meets industry standards.
7.What is the process for return or replacement of KP126N6165?
All KP126N6165 units undergo pre-shipment inspection (PSI). If there is an issue with KP126N6165, 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 KP126N6165 part is unused and in its original packaging.
Return procedure for KP126N6165:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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