MPXV7025DP - 5V ±25kPa Differential Pressure Sensor | NXP/ST
MPN： MPXV7025DP ✓ 啟用中MPXV7025DP 概覽
What is a differential pressure sensor? A differential pressure sensor measures the pressure difference between two ports (a high-side inlet and a low-side reference) and outputs a voltage proportional to that delta. It belongs to the pressure sensor family under MEMS (micro-electro-mechanical systems) and silicon piezoresistive transducers. Differential sensors are widely used for flow sensing (via orifice or pitot tube), filter blockage detection, altitude/altitude-derivative sensing, and HVAC duct monitoring, where only the difference between two points — not an absolute reference — matters.
Key features include on-chip signal conditioning (no external calibration required), temperature compensation across 0 °C to +85 °C, ±5 % linearity over the primary pressure range, and a sensitivity of approximately 90 mV/kPa at 5 V excitation. The patented single-element transducer combines advanced micromachining, thin-film metallization, and bipolar semiconductor processing — an architecture inherited from earlier Motorola/Freescale MPX series devices.
Technically, the device uses a Wheatstone-bridge of piezoresistors diffused into a silicon diaphragm. When pressure is applied across the dual ports, the diaphragm flexes, unbalancing the bridge and producing a differential voltage that is then amplified and offset on-chip to the 0.2 V – 4.7 V output swing. The result is a ratiometric analog output that scales proportionally with supply voltage, simplifying ADC interface design with 3.3 V or 5 V microcontrollers.
Typical applications include HVAC duct airflow monitoring, medical respirators and CPAP machines, industrial process control, water-level detection in sealed tanks, and altitude/altitude-derivative measurement in drones and wearables. Designers choose this part when they need a calibrated, drop-in analog solution rather than a digital I²C/SPI sensor.
When designing in, place 100 nF decoupling close to the supply pin and use a stable, low-noise 5 V source — the output is ratiometric, so any supply ripple couples directly into the reading. Add a small RC low-pass filter on the output if driving long cables to suppress EMI pickup.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 MPXV7025DP — 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： MPXV7025DP （相同外形與佔位） — 差異在於 Output Type, Port Style, Supply Voltage, Operating Pressure Range, Operating Temperature.
MPXV7025DP
✅ 直接替換聯絡詢價
查看資料表 →MPXV7002DP
✅ 直接替換聯絡詢價
查看資料表 →MPXV5010DP
✅ 直接替換聯絡詢價
查看資料表 →MPXV5100DP
✅ 直接替換聯絡詢價
查看資料表 →XGZP6883A
✅ 直接替換📋 參考替代品（不在目錄中）
MPXV7025DP 最大額定值與電氣特性
| Pressure Type | Differential (Dual Port) |
| Pressure Range | -25 kPa to +25 kPa (-3.63 PSI) |
| Operating Pressure Max | ±25 kPa |
| Port Style | Dual ports, same side, male 0.13" (3.3 mm) tube |
| 供應電壓 | 5 V DC nominal |
| 輸出類型 | Analog voltage, ratiometric |
| 輸出電壓範圍 | 0.2 V to 4.7 V |
| Sensitivity | ~90 mV/kPa (at 5 V supply) |
| Linearity | ±5 % (over primary range) |
| 工作溫度 | 0 °C to +85 °C |
| Storage Temperature | -30 °C to +100 °C (per datasheet range) |
| 封裝 | 8-BSOP (SOP-8, 12.06 mm width), surface mount |
| 安裝類型 | Surface Mount |
| Signal Conditioning | On-chip, calibrated and temperature compensated |
| RoHS 狀態 | Compliant |
MPXV7025DP 腳位配置
| 腳位 1 | VCC — 5 V supply |
| 腳位 2 | Vout — Analog output (0.2 V – 4.7 V) |
| 腳位 3 | GND — Ground |
| 腳位 4 | NC — Not connected (port style dependent) |
| 腳位 5 | NC — Not connected |
| 腳位 6 | NC — Not connected |
| 腳位 7 | NC — Not connected |
| 腳位 8 | NC — Not connected (port style dependent) |
典型應用
MPXV7025DP 適用於 6 應用s: HVAC Duct Airflow Monitoring, Medical Respirator / CPAP Pressure Monitoring, Filter Blockage / Differential Pressure Switch, Tank Liquid-Level / Sealed-Volume Sensing, Drone / UAV Airspeed and Altitude Derivative, Industrial Process Control / Pneumatic Systems.
HVAC Duct Airflow Monitoring
The MPXV7025DP's ±25 kPa differential range and dual-port topology make it well-suited to HVAC duct airflow sensing when paired with a pitot tube or orifice plate. The on-chip calibrated analog output (0.2 V – 4.7 V at 5 V) feeds directly into a building automation controller's ADC, eliminating external signal conditioning. Its 0-85 °C compensated range covers commercial HVAC operating envelopes, and the ratiometric output simplifies design for variable-supply systems. Versus digital I²C flow sensors, the MPXV7025DP costs less and avoids firmware driver overhead for legacy 4-wire analog BAS controllers.
推薦
Medical Respirator / CPAP Pressure Monitoring
Breath-circuit pressure monitoring in CPAP machines, ventilators, and resuscitators requires accurate differential sensing in the ±25 kPa range, exactly the MPXV7025DP envelope. The on-chip temperature compensation prevents drift across prolonged warm-up cycles typical in continuous-use medical devices. Its small SOP-8 footprint fits compact handheld designs, and the analog output simplifies integration with isolated medical-grade ADC front-ends. Designers must still complete FDA / CE 60601 validation, but the sensor itself is widely referenced in open-source ventilator designs and supplies a fast, low-latency pressure waveform suitable for breath-detection algorithms.
推薦
Filter Blockage / Differential Pressure Switch
Detecting when a HEPA, oil, or fuel filter is clogged is a classic differential-pressure application: one port upstream, one downstream, and a rising delta indicates blockage. The MPXV7025DP's ±25 kPa range spans the typical clean-to-clogged delta of industrial filter elements. Its 0.2 V – 4.7 V output can drive a comparator for a binary 'replace filter' alert, or feed an MCU ADC for trend logging. This pattern is widely used in diesel-engine intake monitoring, compressed-air systems, and cleanroom recirculation fans where the MPXV7025DP supply voltage and SOP-8 footprint simplify retrofits.
推薦
Tank Liquid-Level / Sealed-Volume Sensing
When measuring the level of a liquid in a sealed tank, attaching one port to the headspace and the other to a reference (often atmosphere or vacuum) produces a differential pressure proportional to liquid column height. The MPXV7025DP's dual side-by-side ports simplify tube routing, and its ±25 kPa range covers several meters of water column depending on fluid density. This technique avoids immersion sensors that contact corrosive or flammable liquids and works with any sealed vessel — a key advantage for chemical, food, and pharmaceutical process tanks where the MPXV7025DP analog output is preferred over digital tank gauges.
推薦
Drone / UAV Airspeed and Altitude Derivative
Lightweight drones and wearables need compact, low-power pressure sensing for pitot-style airspeed and vertical-speed-derivative estimation. The MPXV7025DP draws low current from 5 V, fits an 8-BSOP land pattern, and provides analog output fast enough for the 50-100 Hz sampling typical of flight controllers. While modern flight stacks often use dedicated digital airspeed sensors (e.g., DLVR-L01D), the MPXV7025DP remains a popular, low-cost, well-documented analog option for educational UAV platforms and DIY drone avionics where simplicity outweighs resolution.
推薦
Industrial Process Control / Pneumatic Systems
Pneumatic regulators, vacuum-pickup tools, and low-pressure gas-flow instruments need reliable differential-pressure sensing in industrial environments. The MPXV7025DP's ±25 kPa span, on-chip calibration, and 0-85 °C compensated range cover most shop-floor pneumatic pressures (typical shop air is 80-100 psi = ~550-690 kPa, but regulators step this down to ±25 kPa test ranges). Its ratiometric 5 V analog output interfaces directly with PLC analog-input modules and 4-20 mA transmitter front-ends. Compared with industrial-grade ±25 kPa probes that cost 10-50x more, the MPXV7025DP delivers calibrated performance for cost-sensitive OEM process instruments.
推薦
推薦產品摘要
工程參考資料，適用於 MPXV7025DP — 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 | MPXV7025DP | MPXV7002DP | MPXV5010DP | MPXV5100DP | XGZP6883A |
|---|---|---|---|---|---|---|
| Package | 8-BSOP (SOP-8, 12.06 mm) | 8-BSOP (SOP-8) - same | 8-BSOP (SOP-8) - same | 8-BSOP (SOP-8) - same | 8-BSOP (SOP-8) - same | SOP-8 (similar form factor, different pinout) |
| Brand | NXP Semiconductors | NXP / STMicroelectronics | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | CFSensor |
| Pressure Type | Differential (dual port) | Differential | Differential | Gauge-style differential | Differential | Differential |
| Pressure Range | ±25 kPa (±3.63 PSI) | ±25 kPa (±3.63 PSI) | ±2 kPa | 0 to 10 kPa | 0 to 100 kPa | 0 to 100 kPa |
| Supply Voltage | 5 V DC | 5 V DC | 5 V DC | 5 V DC | 5 V DC | 3.3 V or 5 V |
| Output Type | Analog ratiometric 0.2-4.7 V | Analog ratiometric | Analog ratiometric | Analog ratiometric | Analog ratiometric | Analog calibrated |
| Signal Conditioning | On-chip calibrated | On-chip calibrated | On-chip calibrated | On-chip calibrated | On-chip calibrated | On-chip calibrated and amplified |
| Approx. 1k+ Price (USD) | ~$8.05 (1000 pcs) | ~$8.05 | ~$7-9 | ~$6-8 | ~$9-12 | ~$3-5 (third-party) |
主要差異化特點
- Widest differential pressure range in the NXP MPX SOP-8 family (對比MPXV7002DP)
- On-chip calibrated analog output — no external amplifier needed (對比MPXV5010DP / MPXV5100DP)
- Dual-port differential measurement in a compact SOP-8 package (對比MPXV7025GC6U)
設計說明
The MPXV7025DP output is ratiometric to VCC. Decouple the supply pin with a 100 nF X7R ceramic capacitor placed within 5 mm of the VCC pin. Use a low-noise 5 V LDO (dropout < 100 mV at 10 mA load, PSRR > 60 dB at 1 kHz) such as a TPS7A47 or LM7805 to avoid supply ripple coupling into the pressure reading. The sensor draws only a few mA so a small SOT-23-5 regulator is sufficient.
Route the analog Vout trace over a continuous ground plane and keep it short (< 25 mm) to minimize EMI pickup, especially when running near switching converters or PWM motor drivers. Add a 1 kΩ series resistor plus 10 nF capacitor to ground on Vout to form a 1.6 kHz low-pass filter that suppresses RF interference without materially affecting the DC pressure response. Avoid routing Vout near digital clock lines.
Do not apply vacuum exceeding -25 kPa or pressure exceeding +25 kPa to either port — the silicon diaphragm can crack and produce a zero-offset reading that looks 'stuck'. In outdoor or condensing environments, mount the ports facing downward so moisture does not accumulate in the tubes. Also, note that there are TWO port styles ('Style 1' and 'Style 2') — confirm the pin numbering and port orientation in the datasheet for the specific lot you purchase because many engineers have mistakenly swapped VCC and GND between styles.
Estimated: at a 5 V supply the MPXV7025DP has roughly 90 mV/kPa sensitivity, which gives a usable ADC resolution of about 1 kPa per 10-bit code (1024 levels over 4.5 V span) or 0.25 kPa per 12-bit code. For pressure noise below the sensor's intrinsic floor (~0.05 kPa RMS), oversample the ADC or add a software moving-average filter on the host MCU. The on-chip bandwidth is several kHz, so decimate digitally if you need lower noise rather than analog filtering the signal directly.
合規資訊
RoHS compliance confirmed by NXP and STMicroelectronics product pages. Not AEC-Q100 qualified; this sensor is intended for industrial, HVAC, medical, and consumer use, not automotive. Halogen-free status not explicitly stated in retrieved data.
