MPX53GP - 50 kPa Uncompensated Gauge Pressure Sensor | NXP
MPN： MPX53GP ✓ 啟用中MPX53GP 概覽
A piezoresistive pressure sensor is a MEMS device in which a silicon diaphragm with embedded Wheatstone-bridge resistors deflects under pressure, unbalancing the bridge and producing a millivolt-level differential output. As an uncompensated sensor, it sits in the same broad hierarchy as compensated pressure sensors, altimeters, and barometric ICs; users must add their own external temperature-compensation and signal-conditioning networks to achieve the accuracy levels required for their end system.
Key features include a ±0.6% to ±0.4% accuracy window, a vented-gauge reference for direct absolute-pressure readout in barometric systems, a 4.93 mm barbed male port for flexible-tube pneumatic interfaces, and the wide 0 to 175 kPa proof-pressure range that protects against pressure spikes in fluid and pneumatic systems. The 4-SIP vertical package enables simple through-hole PCB assembly and easy integration into a system front-end alongside an instrumentation amplifier.
Typical applications include medical respiratory monitors (ventilators, CPAP, spirometers), industrial pneumatic controllers, HVAC pressure monitors, altimeters and barometric instruments, and consumer weather stations, where the uncompensated wheatstone-bridge output stage feeds directly into a low-noise op-amp such as an MCP6001 or instrumentation amplifier.
When designing with the MPX53GP, the engineer must add an external instrumentation amplifier and temperature-compensation network; the bare 60 mV full-scale output at 3 V is too small and too temperature-dependent for direct ADC input. Use the front-end reference voltages and supply decoupling shown in the manufacturer application note for repeatable thermal drift performance.
This page consolidates distributor pricing, drop-in pin-compatible alternatives, and practical design guidance not found in the bare manufacturer datasheet, accelerating MPX53GP selection for new designs.
直接替換替代品，適用於 MPX53GP — 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： MPX53GP （相同外形與佔位） — 差異在於 Operating Pressure Range, Output Type, Supply Voltage, Package, Port Size.
MPX53DP
✅ 直接替換聯絡詢價
查看資料表 →MPXV53GC
✅ 直接替換📋 參考替代品（不在目錄中）
MPX53GP
✅ 直接替換聯絡詢價
查看資料表 →MPX53
✅ 直接替換📋 參考替代品（不在目錄中）
MPX53GP 最大額定值與電氣特性
| Pressure Type | Vented Gauge |
| Operating Pressure Range | 0 kPa to 50 kPa (0 to 7.25 PSI) |
| Maximum Overpressure | 175 kPa (25.38 PSI) |
| 輸出類型 | Wheatstone Bridge (analog voltage) |
| Full-Scale Output | 60 mV at 3 V supply |
| 供應電壓 | 3 V typical |
| Accuracy | -0.6% to +0.4% |
| Port Size | Male - 0.19 inch (4.93 mm) barbed tube |
| Port Style | Barbed |
| Termination Style | PCB (Through-Hole) |
| 封裝 / 外殼 | 4-SIP Module |
| Output Range | 20 mV to 80 mV (manufacturer sensitivity window) |
| Mounting Feature | Through-Hole Mount |
| Package Shape | Circular |
MPX53GP 腳位配置
| 腳位 1 | Vout+ — Positive bridge output (top of Wheatstone bridge) |
| 腳位 2 | GND — Common ground / bottom of bridge |
| 腳位 3 | Vout- — Negative bridge output (bottom of bridge) |
| 腳位 4 | Vs — Supply voltage (3 V typical) |
典型應用
MPX53GP 適用於 6 應用s: Medical Respiratory Monitors, Industrial Pneumatic Controllers, HVAC and Building Pressure Monitors, Altimeters and Barometric Instruments, Consumer Weather Stations, Appliance Vacuum and Filter Monitoring.
Medical Respiratory Monitors
The MPX53GP suits ventilator, CPAP, and spirometer front-ends because its 0 to 50 kPa operating range matches the airway-pressure span used in adult and pediatric respiratory circuits. Its 60 mV full-scale output at 3 V combines with a low-noise instrumentation amplifier (such as the MCP6S21 or INA128) to deliver the linearity and stability required for breath-detection algorithms. Uncompensated output lets medical designers apply their own IEC 60601-compliant temperature compensation rather than depend on factory calibration.
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Industrial Pneumatic Controllers
In industrial pneumatic pressure controllers and valve-actuator feedback loops, the MPX53GP delivers the 0 to 50 kPa range typical of low-pressure air-supply systems. Its 175 kPa maximum overpressure rating tolerates pressure spikes during valve cycling, reducing field failures from pressure surges in shop-air lines. The 4.93 mm barbed tube port accepts standard pneumatic tubing for fast panel-mount assembly, and the 4-SIP vertical package fits inside DIN-rail enclosures alongside a microcontroller ADC input stage.
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HVAC and Building Pressure Monitors
Building-automation HVAC systems rely on the MPX53GP for duct static-pressure and room-airflow sensing. The vented-gauge reference matches the standard practice of expressing HVAC pressure relative to atmospheric, simplifying the display readouts. Its low 3 V supply current draws negligible power from battery-backed 24 V HVAC controls when paired with a small LDO regulator, while the vertical 4-SIP package drops directly onto the controller PCB footprint used in legacy Freescale designs.
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Altimeters and Barometric Instruments
Handheld altimeters and weather-station barometers use the MPX53GP because its vented-gauge reference reads pressure relative to ambient altitude-corrected atmospheric pressure. With 50 kPa full scale, the device resolves altitude changes of about 1 m near sea level when paired with a 16-bit ADC, sufficient for hiking and weather-prediction applications. The uncompensated output is fine because outdoor temperature ranges are typically narrow and user-calibration is acceptable in consumer-grade instruments.
推薦
Consumer Weather Stations
Consumer desktop and DIY weather stations often use the MPX53GP to measure local barometric pressure and feed an MCU that performs pressure-trend analysis. The 0 to 50 kPa range covers every weather-relevant pressure from storm lows to fair-weather highs at almost any terrestrial location, while the 4-SIP package simplifies hand-soldering for hobbyist kits. Accuracy is more than enough for trend display (-0.6% to +0.4%) when paired with simple software-based temperature compensation running on the host microcontroller.
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Appliance Vacuum and Filter Monitoring
Vacuum cleaners, coffee machines, and water-purification appliances use the MPX53GP to detect filter clogging by sensing the pressure differential across the filter element. The 50 kPa operating range covers residential vacuum suction (10 to 30 kPa typical) with margin to spare, while the 4.93 mm barbed tube port accepts the small-bore tubing used inside these appliances. The compact 4-SIP vertical package drops into tight enclosures and the uncompensated output leaves cost and PCB area free for application-specific signal conditioning.
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推薦產品摘要
工程參考資料，適用於 MPX53GP — 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 | MPX53DP | MPXV53GC | MPX53 | MPX2010GP |
|---|---|---|---|---|---|
| Package | 4-SIP Module | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Pressure Type | Vented Gauge | Differential | Gauge | Gauge / Differential options | Gauge |
| Operating Pressure Range | 0 to 50 kPa (7.25 PSI) | 0 to 50 kPa (7.25 PSI) | 0 to 50 kPa (7.25 PSI) | 0 to 50 kPa (7.25 PSI) | 0 to 100 kPa (14.5 PSI) |
| Maximum Overpressure | 175 kPa (25.38 PSI) | 175 kPa (25.38 PSI) | 175 kPa (25.38 PSI) | 175 kPa (25.38 PSI) | 400 kPa (58 PSI) |
| Output Range (Full Scale) | 0 to 60 mV at 3 V | 0 to 60 mV at 3 V | 0 to 60 mV at 3 V | 0 to 60 mV at 3 V | 0 to 40 mV at 10 V |
| Supply Voltage | 3 V typical | 3 V typical | 3 V typical | 3 V typical | 10 V typical |
| Output Type | Wheatstone Bridge (uncompensated) | Wheatstone Bridge (uncompensated) | Wheatstone Bridge (uncompensated) | Wheatstone Bridge (uncompensated) | Wheatstone Bridge (uncompensated) |
| Port Style | Barbed tube, vented-gauge | Dual barbed, differential | Barbed tube, gauge | Family-dependent (gauge / differential / absolute) | Barbed tube, gauge |
主要差異化特點
- Vented-gauge reference for direct barometric readout (對比MPX53DP)
- Compact 4-SIP vertical package with barbed tube port (對比MPX2010GP)
- Uncompensated output for designer-controlled conditioning (對比MPX2100AP)
設計說明
The MPX53GP wheatstone-bridge output is 60 mV full-scale at 3 V, so the differential signal at the amplifier input is roughly 1.2 mV per kPa of applied pressure. Use a true instrumentation amplifier (not a single-ended op-amp) to reject common-mode noise from the 3 V supply rail; the MCP6S21 or INA128 family is appropriate. Place the amplifier within 50 mm of the sensor pins to keep PCB-track impedance low and avoid picking up 50/60 Hz mains interference on the long twisted-pair run from the tube-port end.
Power the MPX53GP from a low-noise 3.0 V LDO regulator (such as MCP1700) rather than the MCU supply rail, because the sensor's common-mode voltage is ratiometric to its own supply and any supply ripple couples directly into the bridge output. Decouple the sensor supply pin with a 100 nF ceramic in parallel with a 10 uF bulk cap placed within 5 mm of the pin. Estimated: input supply current is below 10 mA so the LDO can be a low-quiescent type to preserve battery life in portable applications.
Estimated: the uncompensated silicon bridge produces roughly 1 to 2 percent FS drift across the 0 to 85 C commercial range; in medical and HVAC applications where accuracy matters, add an external temperature sensor (such as the MCP9700) adjacent to the MPX53GP and apply a software compensation polynomial in the host MCU. Keep the sensor away from board heat sources such as regulators, power MOSFETs, and LED backlights, since thermal gradients across the package introduce offset shift that is hard to calibrate out in software.
Do not route the tube port against a PCB edge or in a fluid-restricted path without an internal screen, because debris migration into the sensor will permanently damage the diaphragm. Also avoid sealing the vent side of the package (the back of the device) since it is the gauge reference; conformal coating the rear of the package will block the vent and produce non-linear output. The vent channel is typically marked on the datasheet mechanical drawing and should be left clear of obstruction.
合規資訊
RoHS status not available in verified web data; MPX53 family parts are generally lead-free in current production but compliance must be confirmed with the manufacturer for the specific lot date code. AEC-Q100 not applicable - this is a sensor, not an automotive-grade IC. All compliance fields marked unknown pending datasheet verification.