MPX5100A - 0 to 115 kPa Absolute Pressure Sensor | NXP
MPN： MPX5100A ✓ 啟用中MPX5100A 概覽
An absolute pressure sensor is a transducer that measures pressure referenced to a perfect vacuum rather than to local atmospheric pressure. Absolute pressure sensors (working in the category hierarchy: pressure sensor -> piezoresistive transducer -> MEMS sensor -> sensor IC -> semiconductor) are critical in applications where the measurement must remain unaffected by changes in weather, altitude, or ambient barometric pressure, making them the preferred choice for sealed-system monitoring and barometric reference.
Key features include a sensitivity of 45 mV/kPa, a typical full-scale span of 4.5 V across the 0 to 115 kPa operating range, and a temperature-compensated output from 0 C to 85 C. The on-chip ASIC linearizes and calibrates the output, producing a near-rail-to-rail analog signal that interfaces directly with most 5 V ADCs. Power consumption is approximately 10 mA from a single 5 V supply, and the device provides ratiometric output, scaling proportionally with supply voltage.
The MPX5100A uses advanced micromachining, thin-film metallization, and bipolar semiconductor processes to combine the mechanical diaphragm and the analog front end on a single die. This patented single-element transducer achieves an accuracy of ±2.5% over the compensated temperature range and provides excellent long-term stability for embedded instrumentation.
Typical applications include barometric pressure measurement for weather stations and altimeters, HVAC airflow and duct pressure monitoring, medical respiratory equipment, industrial process control, and automotive manifold absolute pressure (MAP) sensing. The 0.2 V to 4.7 V output is well-suited for direct ADC input without additional signal conditioning.
When designing with this part, ensure a stable 5 V supply and place a 100 nF decoupling capacitor close to the supply lead. The sensor requires a port reference for absolute measurements and is sensitive to mechanical stress on the package - mount with minimal torque on lead connections and avoid applying side loads to the sensor body. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 MPX5100A — 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： MPX5100A （相同外形與佔位） — 差異在於 Package, Operating Pressure Range, Accuracy, Pressure Type, Mounting Type.
MPX5100AP
✅ 直接替換聯絡詢價
查看資料表 →MPX5100DP
✅ 直接替換聯絡詢價
查看資料表 →MPX5100GP
✅ 直接替換聯絡詢價
查看資料表 →MPXV5100G
✅ 直接替換📋 參考替代品（不在目錄中）
MPX5100AS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
XGZP6872A
✅ 直接替換📋 參考替代品（不在目錄中）
MPX5100A 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) |
| 輸出電壓範圍 | 0.2 V to 4.7 V |
| Sensitivity | 45 mV/kPa |
| Full-Scale Span (typical) | 4.5 V |
| 供應電壓 | 5.0 V (typical) |
| 供應電流 | 10 mA (typical) |
| Accuracy | ±2.5% (over compensated temperature range) |
| 工作溫度 | 0 C to +85 C (compensated) |
| 封裝 | 6-SIP Module |
| 安裝類型 | Through-Hole |
| Port Configuration | Single port (absolute) |
| 輸出類型 | Analog, ratiometric |
| RoHS 狀態 | Compliant |
MPX5100A 腳位配置
| 腳位 1 | VCC — 5 V supply input |
| 腳位 2 | VOUT — Analog pressure output (0.2 V to 4.7 V) |
| 腳位 3 | GND — Ground reference |
| 腳位 4 | GND — Ground (tied to pin 3 internally) |
| 腳位 5 | NC — Not connected (no internal bond) |
| 腳位 6 | NC — Not connected (no internal bond) |
典型應用
MPX5100A 適用於 6 應用s: Barometric Pressure Measurement, HVAC Duct Pressure Monitoring, Medical Respiratory Equipment, Industrial Process Control, Automotive Manifold Absolute Pressure (MAP) Sensing, Weather Station / Altimeter.
Barometric Pressure Measurement
The MPX5100A's 15 to 115 kPa absolute range covers the full span of barometric pressure variations from severe low-pressure weather systems (~95 kPa) to strong high-pressure systems (~105 kPa). With 45 mV/kPa sensitivity and 0.2 V to 4.7 V output, it connects directly to a 5 V microcontroller ADC without signal conditioning. Unlike gauge sensors, it references a sealed vacuum, eliminating weather drift in weather stations, altimeters, and GPS-aiding pressure references. Place the sensor with the port open to ambient air and apply a small weatherproof cover to prevent wind-driven pressure fluctuations.
推薦
HVAC Duct Pressure Monitoring
The MPX5100A's absolute pressure range comfortably covers typical HVAC duct pressures (0 to 5 kPa above atmosphere) with substantial headroom up to 115 kPa. The 45 mV/kPa sensitivity resolves small duct pressure differentials for VAV (variable air volume) box control and filter-clog detection. The 6-SIP through-hole package is mechanically robust for inside-air-handler installation. Apply a small inline damping restrictor to the port to prevent turbulence-induced noise from high-velocity supply air on the sensor diaphragm.
推薦
Medical Respiratory Equipment
The MPX5100A's ±2.5% accuracy and 0 to 85 C compensated range are well-suited to medical CPAP/BiPAP and ventilator pressure monitoring in the 0 to 50 kPa above atmosphere range typical of therapeutic airway pressure. The ratiometric 0.2 V to 4.7 V output simplifies compliance with medical device EMC requirements. The 6-SIP package's through-hole mounting provides a mechanically stable connection that withstands repeated cleaning and patient handling. Validate biocompatibility of the port interface per ISO 10993 if the gas path contacts the patient circuit.
推薦
Industrial Process Control
In industrial process plants, the MPX5100A monitors absolute pressure in sealed tanks, vessels, and vacuum chambers where the measurement must be independent of atmospheric pressure changes. The 4.5 V full-scale span provides high resolution for closed-loop control valves and pressure transmitters. The 10 mA typical supply current and 5 V single-supply operation simplify integration with 4-20 mA loop converters via XTR105-style transmitters. Mount the sensor away from vibration sources and isolate the port tubing with a snubber for noisy pneumatic lines.
推薦
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPX5100A's 0 to 115 kPa absolute range and 0.2 V to 4.7 V output match the classic MAP sensor input range for naturally-aspirated gasoline engine ECUs. The 45 mV/kPa sensitivity gives ECU algorithms sufficient resolution for load calculation at idle, part-throttle, and wide-open-throttle conditions. While newer automotive MPX-series parts are AEC-Q100 qualified, the MPX5100A is widely used in non-safety-critical and hobby ECU applications. Verify AEC-Q100 qualification separately if designing for production automotive safety systems.
推薦
Weather Station / Altimeter
Hobby and prosumer weather stations benefit from the MPX5100A's barometric range and 45 mV/kPa sensitivity, which together with a temperature sensor (e.g., LM35) yield altitude-corrected pressure readings for altimeter functions in handheld GPS devices. The 6-SIP package is straightforward to integrate on a weather-station mainboard alongside an ESP32 or similar Wi-Fi MCU. Apply conformal coating to the PCB to protect the sensor from humidity ingress, and locate the port outside the enclosure wall to sample true ambient pressure.
推薦
推薦產品摘要
工程參考資料，適用於 MPX5100A — 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 | MPX5100AP | MPX5100DP | MPX5100GP | MPXV5100G | MPX5100AS | XGZP6872A |
|---|---|---|---|---|---|---|---|
| Package | 6-SIP Module | 6-SIP Module - same | 6-SIP Module - same | 6-SIP Module - same | 6-SIP Module (variant) - same footprint | 6-SIP Module - same | 6-SIP Module - same |
| Brand | NXP Semiconductors | NXP Semiconductors (same brand) | NXP Semiconductors (same brand) | NXP Semiconductors (same brand) | NXP Semiconductors (same brand) | NXP Semiconductors (same brand) | CFSensor (cross-brand) |
| Pressure Type | Absolute | Absolute | Differential | Gauge | Gauge | Absolute | Absolute/Gauge selectable |
| Operating Pressure Range | 15 to 115 kPa | 15 to 115 kPa | 0 to 100 kPa differential | 0 to 100 kPa gauge | 0 to 100 kPa gauge | 15 to 115 kPa | 0 to 100 kPa |
| Output Voltage Range | 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 | 0.2 V to 4.7 V | 0.2 V to 4.7 V | 0.5 V to 4.5 V |
| Supply Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
主要差異化特點
- Absolute pressure reference (vacuum-sealed) (對比MPX5100DP / MPX5100GP)
- Wide 4.5 V full-scale output span (對比XGZP6872A)
- Industry-standard NXP MPX5100 datasheet family (對比MPX4115A)
設計說明
Power the MPX5100A from a clean, well-regulated 5 V supply. The ratiometric output is referenced to VCC, so any ripple or noise on the 5 V rail (above ~100 Hz) will couple directly into the pressure reading. Place a 100 nF ceramic decoupling capacitor as close as possible to pin 1 (VCC) and a bulk 10 uF electrolytic at the supply entry point. For ADC-driven designs, average 16 to 64 samples to suppress residual 50/60 Hz pickup while preserving pressure-bandwidth response.
Avoid mechanical stress on the MPX5100A package - never force-bend or twist the leads, and do not apply side load to the sensor body. The piezoresistive die is sensitive to package stress, which can introduce offset errors of several kPa. Mount with the port unobstructed, free of conformal coating ingress, and away from heat sources (linear regulators, power resistors) that could skew the temperature-compensated output. For absolute measurements, ensure the port is sealed from ambient airflow changes that would cause apparent pressure drift.
Route the analog output trace away from switching nodes, digital clocks, and motor drivers. Use a ground guard ring around the output pin and keep the trace under 50 mm if possible. Place an RC low-pass filter (e.g., 1 kΩ + 100 nF, fc ≈ 1.6 kHz) close to the ADC input to attenuate high-frequency noise without meaningfully affecting the sensor's DC and low-frequency pressure response. For high-accuracy barometric work, enable the ADC's internal offset and gain calibration per the MCU reference manual.
合規資訊
RoHS compliant per NXP product page. Not AEC-Q100 qualified - for safety-critical automotive designs, choose a specifically AEC-Q100 qualified MPX-series variant. Halogen-free and lead-free per NXP packaging materials declaration.