MPX5700AS - 700kPa Absolute Pressure Sensor, 6-SIP Module | NXP Semiconductors
MPN: MPX5700AS ✓ Hoạt độngMPX5700AS Tóm tắt
What is an absolute pressure sensor? An absolute pressure sensor measures pressure relative to a sealed reference vacuum (zero absolute reference), making it ideal for applications where barometric or sealed-system pressure must be quantified. Within the sensor taxonomy (absolute pressure sensor > pressure sensor > transducer > sensor), the MPX5700AS belongs to the integrated piezoresistive category that delivers a calibrated, linearized analog voltage directly readable by an MCU ADC, eliminating discrete analog front-end circuitry.
Key features include 0.2 V to 4.7 V output over the specified 15 kPa to 700 kPa range, temperature compensation from 0 °C to +85 °C, and ±2.5% full-scale accuracy across the compensated temperature range. The transducer combines micromachined silicon with thin-film metallization and bipolar signal processing, yielding a single-element device with ratiometric output proportional to the supply voltage and integral EMC/RFI protection for harsh environments.
Technically, the die uses a monolithic piezoresistive bridge whose resistance varies with applied pressure; the on-chip ASIC amplifies, conditions, and temperature-compensates the bridge output. The 4.0 V to 5.25 V supply range and very low 6 mA typical current draw make it a drop-in choice for 5 V industrial and automotive sensor platforms with MCU-based acquisition.
Typical applications include barometric sensing for weather stations and altimeters, manifold absolute pressure (MAP) sensing in engine control units, industrial process control, HVAC pressure monitoring, and consumer white-goods pressure measurement where an MCU analog input requires a calibrated absolute-pressure analog signal.
When designing with this part, decouple VCC with a 100 nF ceramic capacitor placed within 5 mm of the supply pin; add a series resistor on the output if the harness length exceeds 30 cm to limit EMI-induced offset error; and avoid constricting the pneumatic port to maintain specified response time.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet to support rapid PCB-level design decisions.
Bộ thay thế dễ dàng lắp đặt cho MPX5700AS — 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 MPX5700AS (cùng hình factor và footprint) — khác nhau ở Mounting Type, Output Type, Supply Voltage, Operating Pressure Range, Accuracy.
MPX5700AP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPX5700A
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPX5700ASX
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPX5700DP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPX5700ASX
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPX5700AS Tỷ lệ tối đa & tính chất điện
| Pressure Type | Absolute |
| Operating Pressure Range | 15 kPa to 700 kPa (2.18 PSI to 101.53 PSI) |
| Kiểu đầu ra | Analog ratiometric voltage |
| Khoảng điện áp đầu ra | 0.2 V to 4.7 V |
| Điện áp cung cấp | 4.75 V to 5.25 V |
| Điện áp cung cấp | 6 mA (typical) |
| Sensitivity | 6.4 mV/kPa (nominal) |
| Accuracy | ±2.5% Full-Scale Span (over compensated temp range) |
| Khoảng nhiệt độ hoạt động | 0 °C to +85 °C (compensated) |
| Pressure Port | Male 0.19" (4.93 mm) Tube |
| Hộp | 6-SIP Module (Case 867E-03) |
| Kiểu lắp đặt | Through-Hole / Vertical Module |
| Port Type | Absolute (sealed reference vacuum) |
| Trạng thái RoHS | Compliant |
| AEC-Q100 Qualified | Yes (Automotive Grade per datasheets.com listing) |
Cấu hình chân MPX5700AS
| Chân 1 | Vout — Ratiometric analog output voltage |
| Chân 2 | GND — Ground |
| Chân 3 | VCC — 5 V supply input |
| Chân 4 | NC — Not connected (per datasheet) |
| Chân 5 | NC — Not connected (per datasheet) |
| Chân 6 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
MPX5700AS phù hợp cho 6 Áp dụngs: Engine MAP (Manifold Absolute Pressure) Sensing, Barometric Altimeter and Weather Station, Industrial Process Pressure Monitoring, Consumer White-Goods Pressure Sensing, HVAC Duct Static Pressure Monitoring, Medical Respiratory / CPAP Pressure Sensing.
Engine MAP (Manifold Absolute Pressure) Sensing
The MPX5700AS is specified for automotive MAP sensing because its 15 to 700 kPa absolute range covers idle (~30 kPa manifold absolute) through wide-open-throttle (~100 kPa) operating points with comfortable margin. The ratiometric 0.2 V to 4.7 V output feeds a 5 V MCU ADC with minimal external conditioning, and AEC-Q100 qualification allows direct use under-hood. Compared with ratiometric alternatives, the on-chip temperature compensation removes the host firmware lookup table and the 6 mA supply current is negligible relative to ECU budgets. Place the sensor port after the throttle body and add a small reference-orifice dampening loop to attenuate pulsations.
Được đề xuất
Barometric Altimeter and Weather Station
The 15 to 700 kPa absolute range aligns precisely with atmospheric pressure (~101 kPa at sea level dropping to ~30 kPa at 30 km altitude), making the MPX5700AS a strong fit for portable weather stations and altimeters. The 0.2-4.7 V ratiometric output enables sub-hPa resolution when read by a 12-bit ADC oversampled to 16 bits in firmware. Designers should expose the 0.19" port to static air (not wind-blown) to avoid dynamic-pressure errors, and a simple moisture barrier membrane prevents humidity-induced drift in outdoor deployments.
Được đề xuất
Industrial Process Pressure Monitoring
In pneumatic panels and process lines up to 7 bar absolute, the MPX5700AS provides a calibrated, temperature-compensated analog signal directly to PLC analog inputs or MCU ADCs. The 6-SIP module with integral 0.19" tube port simplifies pneumatic integration via a hose barb, while the ratiometric architecture rejects 24 V PLC supply noise. The 6 mA draw is compatible with loop-powered instrumentation when fronted by a precision 5 V regulator. Avoid using the AS in a sealed vibration environment without a snubber - die stress from rigid hose coupling can shift the offset.
Được đề xuất
Consumer White-Goods Pressure Sensing
The MPX5700AS supports laundry water-level and dishwasher pressure-sensing applications where 5 V supply, an integrated port, and ratiometric ADC-friendly output reduce BOM cost. The AEC-Q100 qualified die survives the humid, warm environment inside washers/dryers without corrosion protection beyond conformal coating. A typical implementation reads the pressure via a waterproofed port on the sump or tub. Compared with discrete strain-gauge bridges, the integrated MPX5700AS removes 4 op-amps and an instrumentation reference, simplifying the PCB dramatically.
Được đề xuất
HVAC Duct Static Pressure Monitoring
The 15 to 700 kPa absolute span, 4.75 to 5.25 V supply, and integrated port make the MPX5700AS a drop-in choice for HVAC duct static-pressure monitoring, especially in commercial air-handlers where barometric drift across the building is meaningful. The 6 mA draw allows many sensors on a single 5 V supply. Use the ratiometric transfer function in firmware to remove supply-voltage variation; for sub-Pa resolution, average many ADC samples in software. Do not use silicon-gel potting over the 0.19" tube, as it starves the sensor of pressure.
Được đề xuất
Medical Respiratory / CPAP Pressure Sensing
The MPX5700AS covers the pressure range of CPAP machines (typically 4 to 25 cmH2O = 0.4 to 2.5 kPa absolute above ambient) and bench-top spirometers when referenced against ambient. Its integrated temperature compensation removes the warm-up drift that would otherwise require calibration on every CPAP startup. Designers should include a hydrophobic membrane (e.g., Gore-Tex) on the pressure port to prevent contamination from humidified patient air, and pair the sensor with a 24-bit sigma-delta ADC for the small differential pressure signal over the absolute baseline.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MPX5700AS — 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 | MPX5700AP | MPX5700A | MPX5700ASX (NXP) | MPX5700DP | MPX5700ASX (ST) |
|---|---|---|---|---|---|---|
| Package | 6-SIP (Case 867E-03) | 6-SIP (Case 867E-03) - same | 6-SIP (Case 867E-03) - same | 6-SIP (Case 867E-03) - same | 6-SIP (Case 867E-03) - same | 6-SIP (Case 867E-03) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | STMicroelectronics |
| Pressure Type | Absolute | Absolute | Absolute | Absolute | Differential (dual port) | Absolute |
| Operating Pressure Range | 15 kPa to 700 kPa | 15 kPa to 700 kPa | 15 kPa to 700 kPa | 15 kPa to 700 kPa | 0 kPa to 700 kPa (differential) | 15 kPa to 700 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 |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Sensitivity | 6.4 mV/kPa (nominal) | 6.4 mV/kPa | 6.4 mV/kPa | 6.4 mV/kPa | 6.4 mV/kPa | 6.4 mV/kPa |
| Supply Current (typ) | 6 mA | 6 mA | 6 mA | 6 mA | 6 mA | 6 mA |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- NXP MPX5700 family drop-in compatibility (vsMPX5700AP)
- Second-source availability from STMicroelectronics (vsMPX5700ASX (ST))
- AEC-Q100 qualified automotive grade (vsMPX5700DP (differential))
Ghi chú thiết kế
Decouple VCC (pin 3) with a 100 nF X7R ceramic capacitor placed within 5 mm of the supply pin. Add a bulk 10 uF aluminum or tantalum within 25 mm to absorb motor or relay inrush. A precision 5 V LDO (e.g., TLV1117-50) is recommended over a 7805; the ratiometric output requires Vs accuracy to hold datasheet accuracy. Drive only the MPX5700AS from the 5 V rail; do not share analog 5 V with motors or PWM loads.
Keep digital traces away from the SIP module body to avoid coupling switching noise into the analog output. Place a 1 kohm series resistor at the Vout pin if the cable or harness to the host ADC exceeds 30 cm, to isolate capacitive loading and to suppress RFI per IEC 61000-4-3. Provide a clear, unobstructed air path to the 0.19" tube port; do not bend or strain the pneumatic tubing during assembly.
Do not apply vacuum from the high side of the SIP module - the MPX5700AS measures absolute pressure referenced to a sealed vacuum on the back side of the die, so any port pressure below 15 kPa leaves the linear operating range. Do not connect the pressure port to a sealed liquid-filled manifold - liquid incompressibility can over-range the die. Use a hydrogel-free low-impedance pneumatic interface, and verify the host supply voltage BEFORE each factory calibration because the ratiometric transfer function depends on Vs.
Thông tin tuân thủ
AEC-Q100 qualified automotive grade per datasheets.com listing. RoHS compliant and lead-free per NXP product page. Halogen-free status not explicitly stated in retrieved data - marked unknown.
