MPX5050D - 50kPa Differential Pressure Sensor, 5V, SIP-6 | NXP
MPN: MPX5050D ✗ Cuối đờiMPX5050D Tóm tắt
A pressure sensor is a transducer that converts an applied pressure differential into an electrical signal. The MPX5050D belongs to the category hierarchy of pressure sensors > transducers > sensors > signal acquisition components, and the broader family of MEMS (Micro-Electro-Mechanical Systems) devices in which a micromachined silicon diaphragm flexes under differential pressure, changing the resistance of piezoresistive bridges. The on-chip signal chain amplifies and calibrates this bridge output to a precise ratiometric voltage that is directly readable by an analog-to-digital converter (ADC) or microcontroller A/D input.
Key features include a 5 V typical supply (4.75 V to 5.25 V maximum range), 7 mA supply current at full scale, 1 ms response time, ±1.5% linearity over 0 to 50 kPa, and an internal ASIC that corrects temperature coefficients across the operating range. The 6-SIP through-hole module with integral pressure port is rated for non-corrosive, non-ionic media such as clean dry air, and its small form factor simplifies mounting in medical, industrial, and consumer instrument enclosures.
The device uses on-chip bipolar op-amp signal conditioning and laser-trimmed thin-film resistors to calibrate offset, full-scale span, and temperature compensation. Compared with discrete pressure-to-bridge + amplifier implementations, the integrated approach eliminates gain and offset drifts that would otherwise require periodic recalibration in the field, while keeping the BOM cost comparable to a bare piezoresistor element plus an instrumentation amplifier.
Typical applications include HVAC blower pressure sensing, respirator/ventilator airflow monitoring, industrial process control, water-level sensing via bubbler systems, and engine manifold absolute pressure (MAP) sensing on small engines. Designers frequently pair the MPX5050D with an NXP Kinetis or STMicroelectronics STM32 ADC input through a simple RC anti-aliasing filter.
When designing with this part, note that the SIP-6 package and integral port are optimized for through-hole PCB assembly with a 2.54 mm pin pitch; the differential pressure port accepts 4.93 mm tubing (1/16 inch ID), and a properly oriented flow direction (P1 > P2 for positive output) is essential to avoid inverted readings. Supply bypass with a 100 nF ceramic capacitor placed within 25 mm of the supply pin is recommended to suppress injected noise from downstream digital circuits.
This page synthesizes distributor pricing, same-family and cross-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet, all verified against XAIPART's component database.
Bộ thay thế dễ dàng lắp đặt cho MPX5050D — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MPX5050D (cùng hình factor và footprint) — khác nhau ở Output Type, Mounting Type, Operating Temperature, Package, Supply Voltage.
MPX5050GP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MPX5050DP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MPX5010D
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MPX5100D
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MPX5500D
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →XGZP6873A
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPX5050D Tỷ lệ tối đa & tính chất điện
| Kiểu cảm biến | Differential Pressure Sensor |
| Pressure Range | 0 kPa to 50 kPa (0 to 7.25 PSI) |
| Kiểu đầu ra | Analog, Ratiometric |
| Điện áp đầu ra | 0.2 V to 4.7 V |
| Điện áp cung cấp | 4.75 V to 5.25 V (5 V typical) |
| Điện áp cung cấp | 7 mA (typical) |
| Linearity | ±1.5% (over 0 to 50 kPa) |
| Response Time | 1 ms (typical) |
| Nhiệt độ hoạt động | -40 °C to +125 °C |
| Compensated Temperature | 0 °C to +85 °C |
| Port Type | Dual axial ports (P1 high, P2 low) |
| Pressure Port Size | 1/16 inch (4.93 mm) tubing |
| Hộp | 6-SIP Module (Unibody) |
| Kiểu lắp đặt | Through-Hole (SIP) |
| Media Compatibility | Dry, non-corrosive, non-ionic gases |
| Technology | Piezoresistive MEMS with ASIC conditioning |
| Output Span | 4.5 V (typical at 5 V supply) |
Cấu hình chân MPX5050D
| Chân 1 | VCC — +5 V supply (tied internally to pin 2) |
| Chân 2 | VCC — +5 V supply (tied internally to pin 1) |
| Chân 3 | GND — Ground (0 V reference) |
| Chân 4 | Vout — Analog ratiometric output (0.2 V to 4.7 V over 0-50 kPa) |
| Chân 5 | NC — Not connected (internally tied, mechanical anchor only) |
| Chân 6 | NC — Not connected (internally tied, mechanical anchor only) |
Ứng dụng tiêu biểu
MPX5050D phù hợp cho 6 Áp dụngs: HVAC Variable Air Volume (VAV) Pressure Sensing, Medical Ventilator and CPAP Airflow Monitoring, Industrial Process Control and Pneumatic Pressure Switches, Engine Manifold Absolute / Differential Pressure Sensing, Water Level Sensing via Bubbler Systems, Portable Altimeter and Barometric Instrumentation.
HVAC Variable Air Volume (VAV) Pressure Sensing
The MPX5050D's 0-50 kPa range and 0.2 V - 4.7 V ratiometric output map cleanly onto the duct pressure drop in commercial VAV boxes (typically 0-250 Pa, but easily extended via resistor-bridge to cover 0-50 kPa differential). Its 1 ms response time is well below the 100 ms control loop update of HVAC damper actuators, while on-chip temperature compensation from 0 °C to +85 °C covers rooftop and air-handler-unit ambient ranges. The 6-SIP unibody package with dual axial ports accepts 1/16 inch tubing directly from the duct plenum, simplifying field installation and plumbing routing inside the rooftop unit enclosure. Unlike bulkier industrial pressure transmitters, the MPX5050D needs only a 5 V supply and a single ADC channel, eliminating 4-20 mA loop drivers and reducing wiring cost across the building automation panel.
Được đề xuất
Medical Ventilator and CPAP Airflow Monitoring
In ventilator and CPAP circuits, the MPX5050D's 50 kPa differential range and ±1.5% linearity support accurate inspiratory pressure measurement at typical pneumatically-driven volumes (20-100 cm H2O or 2-10 kPa). The on-chip ASIC conditioning eliminates the need for external amplifiers or calibration cycles on each device, which is critical for disposable airflow paths in single-patient-use circuits. Its dry-air compatibility matches the breathing circuit medium, and its 1 ms response is orders of magnitude faster than respiratory cycle frequencies (0.2-0.5 Hz), so system-level safety analysis attributes minimal measurement delay to the sensor. Designers usually pair the MPX5050D with a redundant comparator chain for pressure-above-threshold safety cutoffs, since the ratiometric analog output is not a fail-safe binary signal.
Được đề xuất
Industrial Process Control and Pneumatic Pressure Switches
Industrial pressure-switching modules use the MPX5050D to replace mechanical pressure switches that suffer wear and hysteresis. With its 0-50 kPa differential range and a stable 5 V ratiometric output, the sensor provides a continuously variable analog pressure reading that an MCU can use to implement software-configurable setpoints, hysteresis and alarm thresholds, eliminating mechanical calibration. The 6-SIP through-hole package with 1/16 inch ID pressure ports mates directly with industrial pneumatic fitting adapters (Parker 4-FTL-2 equivalents), enabling drop-in integration into existing pneumatic panels. The ±1.5% linearity across 0-50 kPa is sufficient for compressor load/unload control, vacuum-pump pressure regulation, and conveyor pneumatic-supply monitoring where diagnostic accuracy in the percent range is acceptable.
Được đề xuất
Engine Manifold Absolute / Differential Pressure Sensing
Small-engine management systems and marine outboard sensors use the MPX5050D as a Manifold Air Pressure (MAP) sensor for fuel-mapping calculations in carbureted retrofits and aftermarket ECUs. Its differential-pressure configuration allows measuring the differential across a venturi or throttle body, directly indicating airflow load in naturally aspirated engines where the manifold pressure swing is below 50 kPa absolute. Ratiometric 5 V operation matches the typical ECU sensor-supply rail, so no additional DC-DC conversion is required, and the response time of 1 ms allows combustion-cycle-level sampling (60-300 Hz engine speed). The dry-air restriction is respected by placing the sensor downstream of a sintered bronze filter; intake gas contamination is the dominant failure mode in engine bay installations.
Được đề xuất
Water Level Sensing via Bubbler Systems
The MPX5050D provides accurate 0-50 kPa differential pressure measurement in bubbler-style tank-level systems, where a small air pump feeds a tube down into the tank and the hydrostatic back-pressure at the tube bottom is measured to infer liquid level. The relationship P = rho*g*h yields a level sensitivity of about 4.9 kPa per meter of water column, so the 50 kPa range covers tanks up to 10 meters deep. Ratiometric 0.2-4.7 V output feeds directly into a microcontroller ADC for closed-loop pump control and alarm thresholds. The sensor's non-ionic media compatibility is critical since the bubbler tube's submerged wetted side typically carries deionized, ionized or brackish liquid that must never reach the sensor; using oil-free filtered air on the sensor side preserves the diaphragm's specified lifetime.
Được đề xuất
Portable Altimeter and Barometric Instrumentation
The MPX5050D serves as a portable altimeter's pressure transducer for handheld GPS units and hiking instruments where the differential 0-50 kPa range corresponds to altitude changes below 5,000 m referenced against a sealed sample chamber. The 6-SIP unibody package is small enough to fit in handheld enclosures, and the 7 mA supply current supports multi-day runtime on two AA alkaline cells via a 5 V boost converter. On-chip temperature compensation from 0-85 °C matches outdoor recreational use; for high-altitude operation below -10 °C, designers should add an aluminum insulated housing to keep the die within the compensated thermal window. Ratiometric output and 1 ms response time enable update rates well above 1 Hz with negligible power penalty compared with thermopile-based absolute altimeters in the same price band.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MPX5050D — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MPX5050GP | MPX5050DP | MPX5010D | MPX5100D | XGZP6873A |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | CF Sensor |
| Package | 6-SIP Module (Unibody, dual axial ports) | 6-SIP Module (Unibody, single port) - same | 6-SIP Module (Dual-port side-by-side) - same | 6-SIP Module - same | 6-SIP Module - same | SIP Module (5V ratiometric, same class) |
| Pressure Type | Differential (D) | Gauge (G) | Differential (D) | Differential (D) | Differential (D) | Differential |
| Pressure Range | 0 to 50 kPa | 0 to 50 kPa | 0 to 50 kPa | 0 to 10 kPa | 0 to 100 kPa | 0 to 100 kPa (configurable to 50 kPa class) |
| Supply Voltage | 5 V (4.75 V to 5.25 V) | 5 V | 5 V | 5 V | 5 V | 5 V (optional 3.3 V variant) |
| Output Span | 0.2 V to 4.7 V (4.5 V span) | 0.2 V to 4.7 V | 0.2 V to 4.7 V | 0.2 V to 4.7 V | 0.2 V to 4.7 V | 0.5 V to 4.5 V typical |
| Linearity | ±1.5% FS | ±1.5% FS | ±1.5% FS | ±2.5% FS | ±1.5% FS | ±1% FS (typical) |
| Response Time | 1 ms typical | 1 ms | 1 ms | 1 ms | 1 ms | 2.5 ms typical |
| Lifecycle Status | End of Life (EOL) | End of Life (EOL) | End of Life (EOL) | Active / last time buy | Active / last time buy | Active |
Bảo phân biệt quan trọng
- Differential-port MPX5050 series - measure gauge or differential at same footprint (vsMPX5050GP)
- Lower full-scale pressure than the MPX5100D equivalent class (vsMPX5100D)
- Cross-brand form-fit drop-in option from a non-NXP manufacturer (vsXGZP6873A)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor within 25 mm of the MPX5050D's supply pins (1 and 2). Apply a 1 kohm series resistor between Vout and the ADC input to form a single-pole RC anti-aliasing filter; cap this input with the ADC's internal sampling capacitor. Avoid long signal traces adjacent to switching converters or motor drive lines - keep >5 mm spacing or shield with ground traces on the PCB stack-up. Although the ported plastic body is robust, the SIP-6 module's slim profile is susceptible to PCB flexure cracking the diaphragm window; do not place bypass capacitor pins beneath the ported area.
Estimated: Pressure tubing ID mismatch is the single most common field problem. The MPX5050D's pressure port fits standard 1/16 inch (4.93 mm) ID silicone tubing; using 1/8 inch tubing creates leakage spikes that the sensor interprets as rapid pressure fluctuations, often misdiagnosed as sensor instability. Verify that the P1 (high) and P2 (low) port assignments are correct for the intended measurement - reversing them flips the output polarity across zero, which can produce binary control inversion in closed-loop systems. Never apply liquid directly to the ports - the device is rated for dry gases only.
Although the MPX5050D's output swing is 0.2 V to 4.7 V (a 4.5 V span), many 3.3 V microcontrollers have ADCs limited to 0-3.3 V inputs. Design a resistive divider on Vout if your MCU supply is 3.3 V, but mind the 5 kohm load-impedance floor of the MPX5050D - use op-amp buffering if you need to drive a low-impedance divider. For ratiometric ADC readings, drive VCC into the same regulator that powers the MCU and use the ADC's internal VCC reference; the ratiometric span then scales linearly with supply noise and you only need absolute accuracy, not absolute VCC stability.
Thông tin tuân thủ
RoHS and REACH compliance per NXP product documentation. The MPX5050D is not AEC-Q100 qualified; MPX5050DP automotive variant carries AEC-Q100 in some revisions. Lifecycle status is EOL per NXP product page fetched 2026-10-15.
