MPX5700D - 700kPa Differential Pressure Sensor, 0.2-4.7V | NXP
MPN： MPX5700D ✓ 啟用中MPX5700D 概覽
A piezoresistive pressure sensor is a MEMS device that converts applied mechanical pressure into a change in electrical resistance of diffused silicon strain gauges arranged in a Wheatstone bridge; on-chip signal conditioning then linearizes, amplifies, and temperature-compensates the bridge output into a near-rail-to-rail analog voltage. Within the broader sensor taxonomy, the MPX5700D belongs to the family of pressure sensors, then to MEMS sensors, then to transducers, and ultimately to signal-conditioning ICs. This hierarchy matters for engineers searching by category and for AI knowledge-graph ingestion.
Key features include: 5 V nominal supply (4.75 V to 5.25 V tolerant), 1 ms response time, 0.2 V to 4.7 V ratiometric analog output, 0 to 700 kPa differential measurement range, ±2.5% linearity over 0 °C to 85 °C, and integrated temperature compensation from -40 °C to +125 °C. The on-chip ASIC eliminates external signal-conditioning components, reducing BOM count and PCB area compared with bare-bridge pressure sensors.
Technically, the device uses a single-element transducer architecture: a single silicon diaphragm with implanted piezoresistors and a co-integrated bipolar ASIC performs amplification, span calibration, and offset trimming via laser-trimmed thin-film resistors. The output is ratiometric to VCC, meaning a 5% supply variation scales the output proportionally, simplifying ADC interfacing with 5 V references.
Typical applications include HVAC air-flow monitoring, industrial process control, medical respiratory equipment, level measurement in non-corrosive fluids, altimeters/barometers, and engine manifold absolute pressure (MAP) sensing. The 700 kPa full-scale and ratiometric 5 V output make it a fit for any MCU or MPU with an A/D input, particularly when board space is constrained.
When designing with the MPX5700D, ensure the differential pressure ports are connected to a dry, non-corrosive gas and that decoupling (100 nF ceramic) is located within 50 mm of the VCC pin. Avoid exposing the device to condensing humidity or liquids directly against the port, as the silicon die is exposed through the port opening.
This page synthesizes distributor pricing, package-level drop-in equivalents, and practical PCB guidance not found in the manufacturer datasheet alone, helping engineers evaluate the MPX5700D against cross-brand 700 kPa alternatives in a single view.
直接替換替代品，適用於 MPX5700D — 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： MPX5700D （相同外形與佔位） — 差異在於 Mounting Type, Output Type, Accuracy, Operating Pressure Range, Package.
MPX5700GP
✅ 直接替換聯絡詢價
查看資料表 →MPX5700DP
✅ 直接替換聯絡詢價
查看資料表 →MPX5700AP
✅ 直接替換聯絡詢價
查看資料表 →MPX5500D
✅ 直接替換聯絡詢價
查看資料表 →MPX5050D
✅ 直接替換聯絡詢價
查看資料表 →26PCDFA6D
✅ 直接替換📋 參考替代品（不在目錄中）
MPX5700D 最大額定值與電氣特性
| Pressure Type | Differential |
| Operating Pressure Range | 0 kPa to 700 kPa (0 to 101.53 PSI) |
| Supply Voltage (VCC) | 4.8 V to 5.2 V (nominal 5.0 V) |
| Analog Output Voltage Range | 0.2 V to 4.7 V |
| 輸出類型 | Ratiometric analog voltage |
| Linearity | ±2.5% (0 °C to 85 °C) |
| Response Time | 1.0 ms (typical) |
| 工作溫度範圍 | -40 °C to +125 °C |
| Storage Temperature Range | -40 °C to +125 °C |
| 封裝 | 6-SIP Module (Case 867-08, through-hole, ported) |
| 安裝類型 | Through-Hole (DIP SIP) |
| Port Configuration | Dual horizontal ports (differential) |
| Technology | Piezoresistive MEMS with bipolar signal-conditioning ASIC |
| RoHS 狀態 | Compliant |
MPX5700D 腳位配置
| 腳位 1 | VCC — 5 V supply voltage (4.8 V to 5.2 V operating range) |
| 腳位 2 | Vout — Ratiometric analog output (0.2 V to 4.7 V) |
| 腳位 3 | GND — Ground reference |
| 腳位 4 | Port 1 / Case — High-side pressure port (or case connection on some variants) |
| 腳位 5 | Port 1 — High-side pressure port, paired with Pin 4 |
| 腳位 6 | Port 2 — Low-side reference pressure port |
典型應用
MPX5700D 適用於 7 應用s: HVAC Air-Flow and Filter Monitoring, Industrial Process Control and Hydraulic Monitoring, Medical Respiratory and CPAP Equipment, Engine Manifold Absolute Pressure (MAP) Sensing, Liquid-Level Measurement in Non-Corrosive Fluids, Altimeter and Barometric Pressure Sensing, Compressed Air and Pneumatic System Monitoring.
HVAC Air-Flow and Filter Monitoring
The MPX5700D's 0-700 kPa range covers duct static pressure and filter differential-pressure measurement in commercial HVAC systems. The 0.2-4.7 V ratiometric output maps directly into a 5 V ADC input on common microcontrollers like NXP's Kinetis or LPC families, simplifying firmware. The 1 ms response time is fast enough for closed-loop airflow control loops in variable-air-volume boxes. Engineers typically place the device across the air filter, measure drop, and trigger a filter-replacement alert when pressure differential exceeds the threshold.
推薦
Industrial Process Control and Hydraulic Monitoring
Industrial hydraulic systems operating up to 100 PSI benefit from the MPX5700D's 700 kPa full scale, on-chip temperature compensation, and ±2.5% linearity. The 6-SIP through-hole package withstands industrial vibration, mounting directly on the backplane near the pressure port. The differential measurement configuration allows reference to ambient or tank return, isolating the reading from pump pulsation when low-pass filtered. The integrated signal conditioning eliminates external instrumentation amplifiers, reducing BOM cost and PCB area in PLC analog input cards.
推薦
Medical Respiratory and CPAP Equipment
The MPX5700D is well-suited to medical respiratory equipment, including CPAP flow monitors, ventilator pressure sensors, and oxygen concentrator regulators, where its differential measurement and on-chip temperature compensation simplify FDA documentation. The 0.2-4.7 V output interfaces to medical-grade ADC front-ends, while the 1 ms response supports breath-cycle monitoring. Designers should add bacterial filters upstream to protect the silicon port from contamination, and verify biocompatibility of any tubing in contact with the breathing circuit.
推薦
Engine Manifold Absolute Pressure (MAP) Sensing
Although the MPX5700D is differential, the MPX5700AP variant in the same 6-SIP Case 867-08 package is a drop-in upgrade for engine MAP sensors up to 700 kPa absolute. The integrated ASIC survives underhood temperatures up to 125 °C and provides the ratiometric output automotive ECUs expect. The 1 ms response time supports closed-loop fuel injection control, and the integrated signal conditioning eliminates the need for external amplifiers in the ECU module.
推薦
Liquid-Level Measurement in Non-Corrosive Fluids
When referenced to atmosphere, the MPX5700D measures hydrostatic pressure in vented tanks up to 70 meters of water column (700 kPa ≈ 71 m H2O). The differential port configuration simplifies plumbing - one port connects to the tank bottom, the other to atmosphere via a vented cable. Designers must protect the silicon die from liquid contact with an inline moisture barrier or compatible isolation membrane, since the port opening exposes the MEMS diaphragm directly.
推薦
Altimeter and Barometric Pressure Sensing
The MPX5700D's 700 kPa full scale covers sea level (≈101.325 kPa) plus substantial overpressure, making it usable for barometric trends up to 6000 m altitude when one port is sealed to a fixed reference. For high-altitude altimeters, the MPX5050D or MPX5500D in the same 6-SIP package offer finer per-kPa resolution. The integrated signal conditioning simplifies interface to weather-station microcontrollers, and the calibrated output reduces firmware-side polynomial compensation work.
推薦
Compressed Air and Pneumatic System Monitoring
Factory pneumatic systems typically operate at 6-8 bar (600-800 kPa), well within the MPX5700D's 700 kPa differential range. The sensor monitors line pressure, detects leaks by tracking overnight decay, and verifies compressor cut-in/cut-out cycling. The through-hole 6-SIP package mounts directly on pneumatic manifold PCBs near the FRL assembly. The ratiometric 5 V output interfaces to industrial 5 V MCUs without level translation, simplifying wiring in 24 V cabinet environments with local 5 V regulation.
推薦
推薦產品摘要
工程參考資料，適用於 MPX5700D — 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 | MPX5700GP | MPX5700DP | MPX5700AP | MPX5500D | 26PCDFA6D |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Honeywell |
| Package | 6-SIP Module (Case 867-08) | 6-SIP Module (Case 867B-04) - same | 6-SIP Module (Case 867B-04) - same | 6-SIP Module (Case 867-08) - same | 6-SIP Module (Case 867-08) - same | 6-SIP Module - same |
| Pressure Type | Differential | Gauge | Differential | Absolute | Differential | Differential |
| Pressure Range | 0 to 700 kPa (0 to 101.53 PSI) | 0 to 700 kPa | 0 to 700 kPa | 0 to 700 kPa (absolute) | 0 to 500 kPa (-28%) | 0 to 100 psi (~690 kPa, -1%) |
| Supply Voltage | 5.0 V nominal | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V (typical) |
| Output Voltage | 0.2 V to 4.7 V (ratiometric) | 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 to 100 mV (not ratiometric rail-to-rail) |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +85 °C (typical) |
| Approx. 1k-Unit Price (USD) | $12.03 | ~$13-15 | ~$13-15 | ~$13-15 | ~$11-13 | ~$20-30 |
主要差異化特點
- Highest full-scale range in the MPX5000 family at 700 kPa (對比MPX5500D)
- On-chip temperature-compensated analog output (對比Honeywell 26PCDFA6D)
- Differential measurement in standard 6-SIP package (對比MPX5700AP)
設計說明
Decouple the 5 V VCC supply with a 100 nF ceramic capacitor placed within 50 mm of the MPX5700D VCC pin (Pin 1). The integrated ASIC draws steady current; supply ripple above 50 mVpp couples into the analog output because the output is ratiometric to VCC. Use a linear regulator (LDO) rather than a switching converter to power the sensor when low ADC noise floor matters.
Do not expose the MPX5700D ports to condensing humidity, dust, water, or corrosive gases. The silicon MEMS diaphragm is exposed through the port opening and will be damaged by direct liquid contact. For outdoor or wet-side applications, add an inline hydrophobic filter (PTFE membrane) upstream of each port. Never blow compressed air into the ports without a pressure regulator, since the 700 kPa full-scale can be exceeded easily during system leak testing.
Route the analog Vout trace (Pin 2) away from digital signals, switching converters, and high-current power traces to minimize coupled noise. Add a guard trace connected to GND on either side of the Vout trace on 2-layer boards. Place the sensor on the PCB edge nearest the pressure ports to keep the pneumatic tubing short, reducing lag and improving response time.
The ratiometric analog output of the MPX5700D is sensitive to VCC noise because the output amplifier references the supply. Use the same 5 V rail that powers the ADC reference (when using a ratiometric ADC) to maximize noise rejection. For highest accuracy, oversample the ADC (16x or higher) and apply a moving average in firmware to reduce noise-equivalent-pressure jitter.
合規資訊
RoHS compliant per NXP product page. Pressure sensor modules are not AEC-Q100 qualified as packaged units; consult NXP/Freescale for AEC-Q100 specific part variants. Halogen-free status not explicitly stated in web data.
