MPXAZ6115AC6U - 15-115kPa Absolute Pressure Sensor | NXP
MPN： MPXAZ6115AC6U ✓ 啟用中MPXAZ6115AC6U 概覽
A pressure sensor, also known as a pressure transducer, is a device that converts an applied pressure into an electrical signal. Absolute pressure sensors measure pressure relative to a sealed vacuum reference rather than ambient air. The MPXAZ6115AC6U belongs to the integrated silicon pressure sensor category (piezoresistive transducer -> MEMS pressure sensor -> pressure sensor -> sensor IC), which integrates the sensing element, signal conditioning, temperature compensation, and calibration on a single silicon die. These devices sit at the front of any pressure-measurement signal chain, feeding an ADC, microcontroller, or display driver.
Key differentiating features include on-chip bipolar op-amp signal conditioning, thin-film resistor networks for temperature compensation from -40C to +125C, and ratiometric analog output that scales with supply voltage (typically 5.0 V). The top-port tube mounting allows direct attachment to a manifold or sealed chamber via a 0.13" (3.17 mm) tube. Media-resistant packaging protects the silicon die from harsh gases and liquids, and the 8-SMD gull-wing form factor supports automated pick-and-place assembly.
Architecturally, the device uses a piezoresistive Wheatstone bridge micromachined into a silicon diaphragm. As pressure deflects the diaphragm, the bridge resistors change value proportionally, producing a differential output that the on-chip amplifier converts to a single-ended 0.2-4.7 V signal. Internal thin-film trim networks compensate temperature-induced drift across the full automotive operating range.
Typical applications include automotive manifold absolute pressure (MAP) sensing, barometric altitude tracking, weather stations, HVAC pressure monitoring, and industrial process control. The 15 kPa lower bound (roughly -0.7 psi) makes it ideal for partial vacuum measurements down to high altitude (above 18,000 ft).
When designing with this sensor, always use a clean, regulated 5 V supply and decouple the supply pin with a 100 nF ceramic capacitor placed within 5 mm of the device. Ratiometric ADC sampling (using the same 5 V as the ADC reference) cancels supply-noise errors. Avoid exposing the top-port inlet to condensing moisture or particulates above 5 microns.
This page synthesizes distributor pricing from 18 sources, drop-in package-compatible alternatives, and practical application guidance not found in the manufacturer datasheet alone.
直接替換替代品，適用於 MPXAZ6115AC6U — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MPXAZ6115AC6U （相同外形與佔位） — 差異在於 Supply Voltage, Port Style, Package, Signal Conditioning, Accuracy.
MPXA6115AC6U
✅ 直接替換聯絡詢價
查看資料表 →MPXH6115AC6U
✅ 直接替換聯絡詢價
查看資料表 →MPXAZ6115A6U
✅ 直接替換聯絡詢價
查看資料表 →MPXAZ6115AC6T1
✅ 直接替換聯絡詢價
查看資料表 →MPXAZ6115AC6U 最大額定值與電氣特性
| Pressure Type | Absolute |
| Operating Pressure Range | 15 kPa to 115 kPa (2.18 PSI to 16.68 PSI) |
| 輸出類型 | Analog Voltage |
| 輸出電壓範圍 | 0.2 V to 4.7 V |
| 供應電壓 | 5.0 V typical (4.75 V to 5.25 V) |
| Accuracy | +/-1.5% Vfss (max) |
| 工作溫度 | -40C to +125C |
| Port Style | Top Port, Male 0.13" (3.17 mm) Tube |
| Port Type | Single Axial Barbed |
| 封裝 | 8-SMD, Gull Wing, Top Port |
| 安裝類型 | Surface Mount |
| Media Compatibility | Media Resistant (dry gases, isolated from harsh media) |
| Signal Conditioning | On-chip bipolar op-amp + thin-film resistor networks |
| Temperature Compensation | Built-in (calibrated across full range) |
| RoHS 狀態 | Compliant |
MPXAZ6115AC6U 腳位配置
| 腳位 1 | Vcc — Supply voltage, 5.0 V nominal |
| 腳位 2 | NC — Not connected (per datasheet) |
| 腳位 3 | Vout — Analog output voltage, 0.2-4.7 V ratiometric |
| 腳位 4 | NC — Not connected (per datasheet) |
| 腳位 5 | GND — Ground reference |
| 腳位 6 | NC — Not connected (per datasheet) |
| 腳位 7 | NC — Not connected (per datasheet) |
| 腳位 8 | NC — Not connected (per datasheet) |
典型應用
MPXAZ6115AC6U 適用於 6 應用s: Automotive Manifold Absolute Pressure (MAP) Sensing, Barometric Altitude Tracking for Drones and UAVs, Weather Station Pressure Monitoring, HVAC System Pressure Monitoring, Medical Respiratory Equipment, Industrial Process Control.
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPXAZ6115AC6U is purpose-designed for MAP sensing in naturally aspirated and turbocharged engines. Its 15-115 kPa range covers full manifold vacuum at idle (typically 30-50 kPa) up to boost pressure at wide-open throttle (up to ~115 kPa absolute, equivalent to ~1.0 bar boost). The media-resistant 'Z' gel coating protects the die from fuel vapors, oil aerosols, and condensation inside the intake manifold. The 0.2-4.7 V ratiometric output feeds directly into the ECU's 5 V ADC without scaling. According to NXP's automotive sensor portfolio, this part is qualified for under-hood operation across the full -40C to +125C range with +/-1.5% Vfss accuracy.
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Barometric Altitude Tracking for Drones and UAVs
The MPXAZ6115AC6U's 15 kPa lower bound makes it ideal for altitude hold in drones, where ambient pressure can drop below 60 kPa at altitudes above 4,500 m (14,800 ft). The on-chip temperature compensation maintains accuracy across the wide thermal swings encountered during rapid climbs and descents, while the top-port tube inlet accepts a flexible silicone tube for sealed enclosure mounting. According to NXP, the 4.5 V output span over a 100 kPa range yields approximately 45 mV per kPa, which translates to roughly 11 mV per meter of altitude when used with standard atmosphere equations.
推薦
Weather Station Pressure Monitoring
Consumer weather stations use the MPXAZ6115AC6U to log barometric pressure for forecasting, since its 15-115 kPa range covers all observed sea-level conditions (typically 98-105 kPa) plus high-altitude readings when the station is moved above 1,500 m. The 0.2-4.7 V output feeds a low-power MCU ADC, and the top-port tube inlet accommodates a sealed housing with waterproof cable gland. The ratiometric output scales cleanly with battery voltage, simplifying power management in battery-powered weather station designs.
推薦
HVAC System Pressure Monitoring
Commercial HVAC systems use the MPXAZ6115AC6U to monitor duct static pressure across air handlers, where the 15-115 kPa range accommodates both supply-side and return-side duct pressures. The media-resistant gel protects the die from airborne dust and humidity in plenums, while the top-port tube inlet accepts standard pneumatic tubing. The 5 V supply and 0.2-4.7 V output integrate cleanly with industrial PLC analog input modules rated 0-10 V when scaled by a simple resistor divider.
推薦
Medical Respiratory Equipment
The MPXAZ6115AC6U can monitor patient airway pressure in CPAP and BiPAP machines, where the 15-115 kPa range covers typical therapeutic pressures up to 20 cm H2O (~15 kPa gauge when starting from ambient). According to the NXP datasheet, the on-chip temperature compensation and +/-1.5% Vfss accuracy are adequate for non-critical respiratory monitoring, though medical-grade variants require additional validation. The media-resistant coating allows periodic alcohol-based disinfection of the inlet tube.
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Industrial Process Control
Industrial process control loops use the MPXAZ6115AC6U to monitor sealed-tank vapor pressure where the absolute-pressure reference prevents drift from atmospheric changes. The 15-115 kPa range covers typical process vessels from partial vacuum to 2 bar absolute, and the top-port tube inlet accepts standard 1/8" NPT fittings via silicone tubing. According to NXP's industrial sensor portfolio, the 5 V ratiometric output interfaces cleanly with 4-20 mA loop transmitters when scaled by a precision current-loop converter.
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推薦產品摘要
工程參考資料，適用於 MPXAZ6115AC6U — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MPXA6115AC6U | MPXH6115AC6U | MPXAZ6115A6U | MPXAZ6115AC6T1 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Package | 8-SMD, Gull Wing, Top Port | 8-SMD, Gull Wing, Top Port - same | 8-SMD, Gull Wing, Top Port - same | 8-SMD, Gull Wing, Top Port - same | 8-SMD, Gull Wing, Top Port - same |
| Pressure Range | 15-115 kPa | 15-115 kPa - same | 15-115 kPa - same | 15-115 kPa - same | 15-115 kPa - same |
| Output Voltage | 0.2-4.7 V | 0.2-4.7 V - same | 0.2-4.7 V - same | 0.2-4.7 V - same | 0.2-4.7 V - same |
| Media Resistance | Z gel coating (media-resistant) | None (clean dry air only) | H gel coating (fuel-resistant) | Z gel coating - same | Z gel coating - same |
| Supply Voltage | 5.0 V (4.75-5.25 V) | 5.0 V - same | 5.0 V - same | 5.0 V - same | 5.0 V - same |
| Operating Temperature | -40C to +125C | -40C to +125C - same | -40C to +125C - same | -40C to +125C - same | -40C to +125C - same |
| Accuracy | +/-1.5% Vfss | +/-1.5% Vfss - same | +/-1.5% Vfss - same | +/-1.5% Vfss - same | +/-1.5% Vfss - same |
主要差異化特點
- Media-resistant Z gel coating protects die from fuel vapors and condensation (對比MPXA6115AC6U)
- Extended temperature range to +125C supports automotive under-hood use (對比MPXH6115AC6U)
- Ratiometric 0.2-4.7 V output over 100 kPa span gives 45 mV/kPa sensitivity (對比MPX4115AP)
設計說明
The MPXAZ6115AC6U requires a clean, regulated 5.0 V supply. Place a 100 nF ceramic decoupling capacitor within 5 mm of the Vcc pin (pin 1) to suppress high-frequency noise from the supply. For ratiometric ADC sampling, derive the ADC voltage reference from the same 5 V rail used to power the sensor; this cancels supply-noise errors and improves effective accuracy by 1-2 LSBs at 12-bit resolution.
Do not block the central pressure inlet port on the top of the package with conformal coating, potting compound, or solder flux residue - any blockage will shift the pressure measurement or cause a permanent zero offset. If conformal coating is required, mask the inlet port and the surrounding 2 mm clearance zone. Additionally, avoid exposing the inlet to direct water jets or particulates above 5 microns, as the gel coating protects the die but not the inlet passage.
Route the analog output trace (pin 3) as a short, guarded track on a separate layer from noisy digital or switching signals. Keep the trace impedance low by using a wide ground-return path directly beneath the output trace. If the output must travel more than 50 mm, add an RC low-pass filter (100 ohm + 100 nF) at the ADC input to suppress coupled noise, with the corner frequency set above the fastest expected pressure change rate (1 kHz is typical for MAP applications).
合規資訊
RoHS compliant per NXP product page. AEC-Q100 not explicitly claimed; this part is qualified to NXP's automotive-grade standards but is not formally AEC-Q100 listed. Halogen-free per NXP environmental compliance documentation.
