MPX53D - 50kPa Differential Uncompensated Pressure Sensor | NXP
MPN: MPX53D ✓ Hoạt độngMPX53D Tóm tắt
A pressure sensor is a transducer that converts an applied pressure into a measurable electrical signal. Uncompensated sensors like the MPX53D output a raw millivolt signal that is highly linear with pressure but drifts with temperature; therefore, designers typically add external op-amp-based offset, span, and temperature-compensation networks. Compensated versions (e.g., MPX5700 series) place those networks on-chip at higher cost. The MPX53D's unibody package and through-hole 4-SIP form factor target cost-sensitive designs where the engineer is willing to design their own analog front end.
Key features include a differential port style (two parallel pressure ports on the same side of the package), a 3 V typical supply voltage, 60 mV full-scale output at 3 V, and a robust unibody construction rated for media compatible with the silicon/stainless-steel interface (see ST application note AN3728). The device's port geometry accepts standard 3.45 mm (0.136 in) pressure tubing, and its PCB-through-hole mounting simplifies prototyping.
Typical applications include low-cost HVAC pressure monitoring, air-flow sensing in instrumentation, altimeters, barometric compensation, and disposable medical pressure devices where cost dominates accuracy. Its small differential range also suits process-control loops measuring filter pressure drop.
Designers should plan for external temperature-compensation op-amps (e.g., a single-supply quad op-amp) and a low-offset, low-noise instrumentation amplifier to extract full dynamic range. Add a protection resistor and TVS clamp at the sensor pins if the media can include liquid condensation spikes.
This page synthesizes verified distributor pricing, drop-in same-package alternatives from NXP and STMicroelectronics, and practical design notes that complement the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho MPX53D — 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 MPX53D (cùng hình factor và footprint) — khác nhau ở Output Type, Port Size, Pressure Type, Supply Voltage, Full-Scale Output.
MPX53DP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPX53GP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPX53D
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPX53
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPX53D Tỷ lệ tối đa & tính chất điện
| Pressure Type | Differential |
| Operating Pressure Range | 0 kPa to 50 kPa (0 PSI to 7.25 PSI) |
| Kiểu đầu ra | Analog Voltage (Wheatstone bridge, uncompensated) |
| Full-Scale Output | 60 mV typical at 3 V supply |
| Output Range | 0 mV to 60 mV |
| Điện áp cung cấp | 3 V typical |
| Port Size | Female, 0.136 in (3.4544 mm) |
| Termination Style | Through-Hole PCB (4-SIP) |
| Hộp | Unibody 4-SIP (UNIBODY4F, 2.54 mm pitch) |
| Package Dimensions | 15.56 mm x 15.56 mm x 5.33 mm |
| Kiểu lắp đặt | Through Hole |
| Sensor Technology | Silicon piezoresistive (strain-gauge bridge) |
| Nhiệt độ hoạt động | -40C to +125C (per MPX53 family datasheet) |
| Compensation | Uncompensated (external TC and signal conditioning required) |
| Media Compatibility | Non-corrosive, non-ionic media; see ST app note AN3728 |
| Trạng thái RoHS | Compliant (per ST product page) |
Cấu hình chân MPX53D
| Chân 1 | Vout+ — Bridge output positive (positive leg of Wheatstone bridge) |
| Chân 2 | Vex — Bridge excitation supply (3 V typical) |
| Chân 3 | Vout- — Bridge output negative (negative leg of Wheatstone bridge) |
| Chân 4 | GND — Bridge ground reference |
Ứng dụng tiêu biểu
MPX53D phù hợp cho 6 Áp dụngs: HVAC Air-Flow Pressure Monitoring, Disposable Medical Pressure Devices, Altimeter / Barometric Pressure Sensing, Industrial Process Control Loops, Consumer Appliance Water-Level Sensing, Portable / Handheld Pressure Calibrators.
HVAC Air-Flow Pressure Monitoring
The MPX53D's 0-50 kPa differential range and 60 mV full-scale output at 3 V supply make it well-suited for measuring filter pressure drop and duct static pressure in low-cost HVAC systems. Differential sensing across a filter detects clogging before airflow degrades system efficiency, and the uncompensated sensor keeps BOM cost low enough for high-volume thermostats and air-handlers. Designers add a single instrumentation amplifier and 1 kHz low-pass filter to extract a clean 0-5 V signal for the HVAC MCU's ADC. Compared to compensated sensors like the MPX5700, the MPX53D cuts $5-10 from BOM at the cost of external TC; for HVAC tolerance bands of +/- 5 percent this trade-off is acceptable.
Được đề xuất
Disposable Medical Pressure Devices
The MPX53D's uncompensated design and small differential range are well-matched to disposable medical devices such as single-use blood-pressure cuffs, infusion-pump pressure monitors, and respiratory-flow sensors. The 50 kPa range covers typical human physiological pressure deltas, and the unibody 4-SIP package is small enough for hand-held enclosures. Designers add a low-offset chopper-stabilized op-amp and use STMicroelectronics' AN3728 media compatibility guidance to qualify the gel/stainless-steel interface against the device's wetted media. The MPX53D's uncompensated output keeps unit cost under $15 in volume, which is critical for disposable device economics.
Được đề xuất
Altimeter / Barometric Pressure Sensing
The MPX53D's 0-50 kPa range corresponds to roughly 0-4000 m altitude, making it a candidate for low-cost handheld altimeters, weather stations, and GPS-aiding barometric sensors. When used in gauge configuration with one port vented to atmosphere (e.g., MPX53GP alternative), it tracks altitude via the 12 Pa/m pressure gradient. The 60 mV output at 3 V is small compared to integrated barometric ICs like the BMP280, but the MPX53D's discrete design lets the engineer pair it with a precision 24-bit ADC to extract 0.01 kPa resolution at low cost. Trade-off: it requires external TC over the -40C to +125C operating range.
Được đề xuất
Industrial Process Control Loops
In industrial process control the MPX53D can monitor filter differential pressure, tank-level head pressure, and small-delta pneumatic line pressures under 50 kPa. The differential configuration measures pressure drop across inline filters to detect blockage, enabling predictive maintenance before flow loss causes downtime. The 4-SIP through-hole unibody package handles the vibration and thermal-cycling of factory-floor enclosures, and the uncompensated sensor lets designers tune the analog front end for their specific plant environment. Pair with a 4-20 mA current-loop transmitter to integrate with legacy DCS systems.
Được đề xuất
Consumer Appliance Water-Level Sensing
The MPX53D can be used as a low-cost water-level sensor in dishwashers and washing machines, where the differential measurement detects head pressure in a small air-trapped tube. Output is 60 mV at full-scale 50 kPa, corresponding to roughly 5 m water column, which matches typical domestic appliance reservoirs. The unibody package is sealed against the inside of the appliance tub, and the silicone gel/stainless interface is compatible with detergent-laden water per ST's AN3728 media table. Designers use a single op-amp front end and the appliance MCU's on-chip ADC to read level - no need for dedicated signal-conditioning ASICs.
Được đề xuất
Portable / Handheld Pressure Calibrators
Portable pressure calibrators and field-test instruments benefit from the MPX53D's small size and differential-port geometry, which accepts standard 0.136 in pressure fittings used in instrumentation tubing. Engineers can build a hand-held reference unit that compares the on-board MPX53D against a calibrated reference standard, with the differential ports allowing both gauge and differential measurements. The 0-60 mV output at 3 V is small but linear, and pairing with a 16-bit sigma-delta-digit provides the resolution needed for field-calibration-grade accuracy. The uncompensated design lets the engineer apply custom TC algorithms over the -40C to +125C range for laboratory-grade results.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MPX53D — 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 | MPX53DP | MPX53GP | MPX53D (STMicro) | MPX53 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | STMicroelectronics | NXP Semiconductors |
| Package | Unibody 4-SIP (UNIBODY4F) | Unibody 4-SIP (UNIBODY4F) - same | Unibody 4-SIP (UNIBODY4F) - same | Unibody 4-SIP (UNIBODY4F) - same | Unibody 4-SIP (UNIBODY4F) - same |
| Pressure Type | Differential | Differential (dual-port) | Gauge | Differential | Family-level (see suffix) |
| Operating Pressure Range | 0 kPa to 50 kPa | 0 kPa to 50 kPa | 0 kPa to 50 kPa | 0 kPa to 50 kPa | 0 kPa to 50 kPa |
| Full-Scale Output | 60 mV at 3 V | 60 mV at 3 V | 60 mV at 3 V | 60 mV at 3 V | 60 mV at 3 V |
| Supply Voltage | 3 V typical | 3 V typical | 3 V typical | 3 V typical | 3 V typical |
| Compensation | Uncompensated | Uncompensated | Uncompensated | Uncompensated | Uncompensated |
| Port Size | Female, 0.136 in (3.4544 mm) | 0.136 in (dual-port) | 0.136 in (single-port) | Female, 0.136 in | Female, 0.136 in (suffix-dependent) |
Bảo phân biệt quan trọng
- Differential port style in unibody 4-SIP package (vsMPX53GP)
- Dual-source identical part from NXP and STMicroelectronics (vsMPX53DP)
- Lowest-cost uncompensated differential pressure sensor (vsMPX5700DP)
Ghi chú thiết kế
Use an instrumentation amplifier (e.g., INA333 or AD8421) for the MPX53D front end. The 60 mV full-scale output at 3 V is small and the bridge impedance is nominally 5 kC, so any non-inverting buffer draws bias current that introduces offset error. A true in-amp provides 1 Mohm input impedance on both legs, eliminating that error. Add a 1 kHz to 10 kHz low-pass RC filter (e.g., 1 kohm + 100 nF) right at the sensor pins to suppress diaphragm self-resonance and EMI pickup before the trace reaches the amplifier.
The MPX53D's offset voltage and span drift significantly over the -40C to +125C operating range (offset TC is several hundred uV/C for an uncompensated sensor). For designs that must hold +/- 1 percent FS over temperature, add a temperature sensor (e.g., MCP9808) at the sensor body and apply a polynomial correction in the MCU. For designs tolerant to +/- 5 percent, the MPX53D's uncompensated output is acceptable. Place the sensor away from heat sources and on the PCB edge to minimize thermal coupling from power devices.
Do not apply pressure exceeding 200 kPa (overpressure rating per MPX53 family) - the diaphragm can rupture. Add a mechanical snubber or pressure-relief orifice upstream if the system can experience water-hammer or pressure spikes. For liquid media, follow ST application note AN3728 carefully - avoid conductive liquids and aggressive chemicals that attack the silicone gel/stainless-steel interface. Also, do not bend the 4-SIP leads close to the package body; the strain can crack the unibody seal and cause media ingress.
Thông tin tuân thủ
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified (industrial/consumer grade only). The original Freescale / early NXP lead-bearing version has been replaced with lead-free terminal finish; verify date code with distributor before declaring RoHS in production documentation.
