MPX5700AP - 15-700 kPa Absolute Pressure Sensor | NXP SIP-6
MPN： MPX5700AP ✓ 啟用中MPX5700AP 概覽
A pressure sensor is a transducer that converts an applied pressure into a proportional electrical signal. Within the broader sensor hierarchy, the MPX5700AP belongs to the category of piezoresistive pressure sensors -> MEMS pressure sensors -> pressure transducers -> sensors. Piezoresistive sensors exploit the change in silicon resistance under mechanical strain, offering high sensitivity, small size, and CMOS-compatible fabrication. Absolute pressure sensors like the MPX5700AP measure pressure referenced to a sealed vacuum cavity inside the die, as opposed to gauge sensors (which reference ambient atmosphere) or differential sensors (which measure the difference between two ports).
Key specifications of the MPX5700AP include a 6.4 mV/kPa nominal sensitivity, 1.5% accuracy over the calibrated range, 5 V typical supply (4.75 V to 5.25 V operating range), -40°C to +125°C operating temperature, and a maximum overpressure rating of 2800 kPa (406.11 PSI). The on-chip bipolar signal conditioning delivers a near-linear ratiometric output proportional to VCC, simplifying firmware conversion. The single-element transducer uses advanced micromachining, thin-film metallization, and bipolar semiconductor processing.
The internal architecture pairs a Wheatstone-bridge piezoresistive strain gauge with a precision bandgap reference and output buffer amplifier. Laser-trimmed resistors calibrate offset and full-scale at the factory, eliminating the need for external trim potentiometers in most applications. The die is housed in a 6-SIP module with an integrated stainless-steel pressure port that isolates the sensitive element from corrosive media.
Typical applications include industrial pressure monitoring, HVAC system controls, medical respiratory equipment, altimeters and barometric instruments, process control loops, and consumer barometric weather stations. The 0.2 V to 4.7 V output spans the input range of most 5 V microcontrollers and 4.096 V references, allowing direct ADC sampling without amplification.
When designing with this part, place a 0.01 µF decoupling capacitor close to the VCC pin and ensure the pressure port uses flexible tubing to avoid mechanical stress. For best accuracy, average multiple ADC samples and apply a small linear correction using the datasheet trim values.
This page synthesizes NXP and STMicroelectronics distributor pricing, drop-in cross-brand equivalents, and practical design considerations not found in the manufacturer datasheet alone.
直接替換替代品，適用於 MPX5700AP — 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： MPX5700AP （相同外形與佔位） — 差異在於 Mounting Type, Package, Output Type, Operating Pressure Range, Accuracy.
MPX5700ASX
✅ 直接替換📋 參考替代品（不在目錄中）
MPX5700DP
✅ 直接替換聯絡詢價
查看資料表 →MPX5700AP 最大額定值與電氣特性
| Pressure Type | Absolute |
| Pressure Range | 15 kPa to 700 kPa (2.18 PSI to 101.53 PSI) |
| Maximum Overpressure | 2800 kPa (406.11 PSI) |
| 輸出類型 | Analog, ratiometric |
| 輸出電壓範圍 | 0.2 V to 4.7 V |
| 供應電壓 | 4.75 V to 5.25 V (5 V typical) |
| Sensitivity | 6.4 mV/kPa nominal |
| Accuracy | 1.5% over calibrated range |
| 工作溫度 | -40°C to +125°C |
| Port Type | Male 4.93 mm (0.19") tube |
| 封裝 | 6-SIP Module (Case 867E-03) |
| Technology | Piezoresistive, monolithic silicon |
| 安裝類型 | Through-hole (SIP) |
| Packing Quantity | 20 per tray |
| Min Order Quantity | 200 |
| Lead-Free / RoHS | Compliant |
MPX5700AP 腳位配置
| 腳位 1 | VCC — 5 V supply input |
| 腳位 2 | VOUT — Analog ratiometric output (0.2 V to 4.7 V) |
| 腳位 3 | GND — Ground reference |
| 腳位 4 | NC — Not connected (per datasheet) |
| 腳位 5 | NC — Not connected (per datasheet) |
| 腳位 6 | NC — Not connected (per datasheet) |
典型應用
MPX5700AP 適用於 6 應用s: Industrial Pressure Monitoring & Process Control, Medical Respiratory Equipment, HVAC System Pressure Sensing, Barometric Altimeter & Weather Instruments, Automotive Manifold & Boost Pressure Monitoring, Consumer Barometric Weather Stations.
Industrial Pressure Monitoring & Process Control
The MPX5700AP is ideally suited for industrial pressure monitoring loops because its 15-700 kPa absolute range covers process pressures from vacuum to high-pressure lines, and its 0.2-4.7 V output interfaces directly with industrial PLC analog input modules. The 1.5% accuracy is sufficient for hydraulic system monitoring, water treatment pressure verification, and pneumatic control feedback. The 2800 kPa overpressure margin protects the sensor against pressure spikes common in industrial environments, and the -40°C to +125°C operating range tolerates unheated cabinet installations.
推薦
Medical Respiratory Equipment
The MPX5700AP fits medical respiratory equipment including ventilator pressure circuits and CPAP/BiPAP machines because its 15 kPa lower limit accurately measures sub-atmospheric (inspiration) pressures while the 700 kPa upper range covers positive-pressure therapy outputs. The 6.4 mV/kPa sensitivity provides sufficient resolution to detect small pressure changes important for patient breath triggering. The on-chip temperature compensation ensures stable readings across the patient's room ambient range, and the stainless-steel port isolates the silicon die from humid exhaled gases.
推薦
HVAC System Pressure Sensing
The MPX5700AP serves HVAC refrigerant and duct pressure monitoring applications thanks to its absolute pressure measurement referenced to a sealed vacuum inside the die. This eliminates ambient barometric variation that would otherwise corrupt readings in rooftop HVAC installations. The 0.2-4.7 V output range maps cleanly to a 0-5 V HVAC controller analog input, and the 5 V supply aligns with common 24 VAC-derived HVAC control rails. The 6-SIP package is mechanically rugged for equipment-room installations.
推薦
Barometric Altimeter & Weather Instruments
The MPX5700AP measures atmospheric pressure accurately in portable altimeters and weather stations because its absolute pressure reference (15-700 kPa covers 0 m to ~5,500 m altitude) and ±1.5% accuracy deliver altitude readings within approximately 100 meters after basic linearization. The 6.4 mV/kPa sensitivity produces a 0.65 V signal change per 100 m elevation at 5 V supply, easily resolved by 10-bit ADCs. Low current consumption suits battery-powered handheld weather instruments that need months of runtime from AA cells.
推薦
Automotive Manifold & Boost Pressure Monitoring
The MPX5700AP monitors engine manifold pressure, turbocharger boost, and fuel rail pressure in automotive applications because its 15-700 kPa range covers atmospheric manifold vacuum (down to 30 kPa absolute at high vacuum) through 700 kPa boost conditions. The rugged 6-SIP module withstands under-hood temperature extremes, and the 2800 kPa overpressure margin tolerates pressure transients. The ratiometric output eliminates 5 V regulator drift in automotive electrical environments with wide battery voltage swings.
推薦
Consumer Barometric Weather Stations
The MPX5700AP fits consumer weather station base stations and DIY barometric projects because its calibrated analog output requires no firmware-side linearization beyond a simple offset/gain correction, dramatically simplifying the host MCU code. The factory temperature compensation across -40°C to +125°C delivers stable readings in weather stations exposed to outdoor temperature swings. Combined with a low-cost microcontroller and Wi-Fi module, the MPX5700AP enables Internet-of-Things weather telemetry stations at hobbyist-friendly pricing.
推薦
推薦產品摘要
工程參考資料，適用於 MPX5700AP — 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 | MPX5700ASX | MPX5700DP | MPX5700GP | MPX5700AS |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 6-SIP Module (Case 867E-03) | 6-SIP Module (Case 867E-03) - same | 6-SIP Module (Case 867E-03) - same | 6-SIP Module (Case 867E-03) - same | 6-SIP Module (Case 867E-03) - same |
| Pressure Type | Absolute | Absolute | Differential | Gauge | Absolute |
| Pressure Range | 15-700 kPa | 15-700 kPa | 0-700 kPa differential | 0-700 kPa gauge | 15-700 kPa |
| Output Voltage | 0.2-4.7 V | 0.2-4.7 V | 0.2-4.7 V | 0.2-4.7 V | 0.2-4.7 V |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Port Style | Axial male tube (4.93 mm) | Axial straight | Dual port | Gauge port | Axial side |
| 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 |
| Sensitivity | 6.4 mV/kPa | 6.4 mV/kPa | 6.4 mV/kPa | 6.4 mV/kPa | 6.4 mV/kPa |
主要差異化特點
- Single-port absolute pressure with vacuum reference (對比MPX5700DP)
- Fully calibrated ratiometric analog output (對比MPX5700GP)
- Wide 2800 kPa overpressure margin (對比MPX5700AS)
設計說明
Decouple the MPX5700AP VCC pin (pin 1) with a 0.01 µF to 0.1 µF ceramic capacitor placed within 5 mm of the lead to suppress high-frequency noise from the supply. The sensor draws less than 10 mA at 5 V, but the on-chip amplifier can inject brief current spikes into VCC during output transitions. Adding a small ferrite bead in series with VCC helps in noisy industrial environments.
Route the analog output signal (pin 2) away from digital MCU traces and switching power converter inductors to avoid coupled noise. A ground plane beneath the SIP module helps shield the signal. Keep the tube port clear of mechanical stress - clamp the tubing downstream of the integrated stainless-steel port to avoid applying torque directly to the sensor body.
Average multiple ADC samples (typically 8 to 64) in firmware to reduce single-sample noise; the MPX5700AP output contains ~1-2 mV peak-to-peak broadband noise. Apply the datasheet transfer function VOUT = VCC × (0.0012 × P + 0.04) for software-side pressure calculation in kPa, where VCC is the actual measured supply voltage to compensate for ratiometric drift.
Do not apply vacuum below 0 kPa absolute (the sensor minimum is 15 kPa) - this can permanently damage the die. Do not connect the NC pins (4-6) to any signal as they are tied to internal test structures. When reading with a 3.3 V ADC, the 4.7 V upper output will clip - use a resistor divider or a 5 V-tolerant ADC input. Do not use the MPX5700AP with water or corrosive media - the integrated port is suitable only for clean dry gases.
合規資訊
RoHS compliant and Halogen Free per the GlobalSpec datasheet entry. Not AEC-Q100 qualified for automotive - choose automotive-specific NXP sensors if required.
