MPX2050GP - 50 kPa Vented Gauge Pressure Sensor | NXP / STMicro
料号： MPX2050GP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $14.2 | $14.20 |
| 10 | $12.8 | $128.00 |
| 100 | $11.05 | $1,105.00 |
| 500 | $10.52 | $5,260.00 |
| 1,000 | $9.85 | $9,850.00 |
MPX2050GP 概述
A pressure sensor (or pressure transducer) is a device that converts an applied pressure into a measurable electrical signal. Piezoresistive sensors achieve this by exploiting the change in silicon resistance when mechanical strain is applied to an integrated diaphragm. Within the broader sensor hierarchy, the MPX2050GP sits under MEMS sensors -> pressure sensors -> piezoresistive transducers -> board-mount sensor modules. This category is essential whenever a system must monitor fluid or gas pressure for safety, control, or measurement purposes, and analog-output parts like the MPX2050GP remain preferred when interfacing with legacy analog front-ends, instrumentation amplifiers, or microcontroller ADCs.
Key features of the MPX2050GP include 0 to 50 kPa (0 to 7.25 PSI) gauge measurement, vented gauge reference for absolute-vs-differential applications, 0 to 40 mV full-scale span (typ) at 10 V supply, low offset drift over 0 to 85C, and a 4-pin unibody SIP package that mounts directly onto a PCB or in-line tubing manifold. The vented gauge configuration allows the back side of the diaphragm to sense atmospheric pressure through the port, simplifying medical and barometric-style designs.
The device uses a piezoresistive Wheatstone bridge on the silicon die; laser trimming during manufacture calibrates both offset and span, eliminating most external compensation components. Typical full-scale output is 40 mV at 10 V excitation (4 mV/V), linearity is ~0.05% to 0.1% of full scale, and pressure hysteresis is below 0.1% across the operating range.
Typical applications include medical respiratory monitors, HVAC air-flow and filter monitoring, industrial process control, barometric reference sensing, and altimeter/barometer modules. The 4 mV/V sensitivity makes it well-suited to direct ADC input after a low-noise instrumentation amplifier.
When designing with this part, pay attention to input excitation noise: a clean, low-noise 10 V reference (or regulated supply) is required because any ripple couples directly into the output. Mount the SIP module mechanically to avoid stress on the pressure port and use a sealed manifold for liquids.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： MPX2050GP ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MPX2050GP （相同外形与封装尺寸） ——差异在于 Mounting Type, Operating Pressure Range, Output Type, RoHS Status, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
MPX2050DP
✅ 直接替换📋 参考替代料（不在目录中）
MPX2050D
✅ 直接替换✓ 有现货
$5.4 / 个
查看数据手册 →MPX2100GP
✅ 直接替换✓ 有现货
$10.4 / 个
查看数据手册 →MPX2053GP
✅ 直接替换✓ 有现货
$9.75 / 个
查看数据手册 →MPX2010GP
✅ 直接替换✓ 有现货
$7.2 / 个
查看数据手册 →XGZP191
✅ 直接替换📋 参考替代料（不在目录中）
MPX2050GP 最大额定值与电气特性
| Pressure Type | Vented Gauge |
| Operating Pressure Range | 0 kPa to 50 kPa (0 PSI to 7.25 PSI) |
| 输出类型 | Analog Wheatstone Bridge (mV) |
| Full-Scale Output (Typ @ 10 V) | 40 mV (4 mV/V) |
| Zero Offset (Typ) | 0 mV |
| Supply / Excitation Voltage | 10 V typical (max 16 V per datasheet) |
| Linearity | +/-0.05% to +/-0.1% of FSS (typ) |
| Pressure Hysteresis | < 0.1% of FSS |
| 工作温度 | 0C to +85C |
| Port Style | Male 0.19" (4.93 mm) Tube |
| 封装 / 外壳 | 4-SIP Module (Case 344B-01) |
| 安装类型 | Through-Hole (SIP, vertical) |
| Technology | Silicon Piezoresistive, MEMS |
| Diaphragm Material | Monolithic silicon with integrated strain gauge |
| Compensation | On-chip temperature compensated and laser-trimmed |
| Lead-Free / RoHS | Yes (RoHS compliant) |
MPX2050GP 引脚配置
| 引脚 1 | VS — Excitation supply positive (10 V typical) |
| 引脚 2 | VOUT+ — Bridge output positive (signal +) |
| 引脚 3 | GND — Common / excitation supply return |
| 引脚 4 | VOUT- — Bridge output negative (signal -) |
典型应用
MPX2050GP 适用于 6 应用s: Medical Respiratory / Ventilator Pressure Monitoring, HVAC Air-Flow and Filter Monitoring, Industrial Process Control and Pneumatics, Barometric / Altimeter Reference Sensing, Blood Pressure and Diagnostic Instruments, Appliance and White Goods Pressure Sensing.
Medical Respiratory / Ventilator Pressure Monitoring
The MPX2050GP is widely used in medical respiratory monitoring equipment including ventilators, CPAP machines, spirometers, and anesthesia circuits. Its 0-50 kPa (7.25 PSI) range covers typical inspiratory and expiratory airway pressures, while the 4 mV/V output is well-suited for amplification by an INA125 or AD620 instrumentation amp before ADC sampling. The on-chip temperature compensation across 0-85C and laser-trimmed offset/span simplify medical-grade calibration. The vented-gauge configuration means the back side of the diaphragm references ambient atmospheric pressure through the male tube port, eliminating the need for an external barometric sensor in differential breathing-circuit measurements.
推荐
HVAC Air-Flow and Filter Monitoring
In HVAC systems, the MPX2050GP monitors duct static pressure, filter differential pressure, and fan performance. The 50 kPa range is ideal for typical building-automation pressure drops, and the SIP package with male 4.93 mm tube port integrates directly into standard pneumatic tubing. Combined with an instrumentation amp and a microcontroller ADC, the design can detect clogged filters (rising differential pressure) and verify fan operation, supporting energy-efficient variable-air-volume (VAV) control. The 4 mV/V output and low hysteresis under 0.1% keep drift negligible over long duty cycles.
推荐
Industrial Process Control and Pneumatics
Industrial process control applications use the MPX2050GP for tank-level sensing, vacuum-pressure verification, and pneumatic line monitoring up to 50 kPa. The through-hole 4-SIP package mounts directly onto a process-control PCB, and the 10 V excitation is compatible with legacy 4-20 mA transmitter front-ends when paired with a V-to-I converter. The piezoresistive silicon diaphragm is rugged enough for non-corrosive gases, and the laser-trimmed calibration reduces per-unit setup time in volume production. Designers typically ratiometrically reference the ADC to the excitation supply to cancel supply drift.
推荐
Barometric / Altimeter Reference Sensing
Portable altimeters and weather-station barometers use the MPX2050GP's vented-gauge port as a clean barometric reference. The vent to atmosphere through the tube port lets the back side of the diaphragm track ambient pressure, providing absolute barometric readings when calibrated with a separate reference. While 0-50 kPa spans only a portion of full barometric range (typically 87-108 kPa), it is well-suited for differential altimetry above a reference point. The 4 mV/V output pairs naturally with low-power op-amps in battery-driven designs.
推荐
Blood Pressure and Diagnostic Instruments
The MPX2050GP appears in non-invasive blood pressure monitors and similar diagnostic instruments where its 0-50 kPa range matches cuff pressures and the vented-gauge port simplifies tubing integration. Its medical-grade linearity (+/-0.05-0.1% FSS), low hysteresis under 0.1%, and stable offset over 0-85C support reliable systolic/diastolic measurement after calibration. Designers typically combine the sensor with an instrumentation amp, active low-pass filter, and a microcontroller ADC; safety isolation is required for patient-contact designs per IEC 60601.
推荐
Appliance and White Goods Pressure Sensing
Consumer appliances such as washing machines, dishwashers, and water-level controllers use the MPX2050GP for water-level and pump-outlet pressure monitoring. The 4-SIP package fits standard through-hole PCB assemblies, the male tube port accepts standard pneumatic hose, and the 0-50 kPa range covers typical domestic water pressures. The sensor's low cost, lead-free / RoHS compliance, and NXP's high-volume production make it attractive for cost-sensitive appliance designs. An RC network protects the bridge from water-hammer transients.
推荐
推荐产品汇总
工程参考数据： MPX2050GP ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MPX2050DP | MPX2050D | MPX2100GP | MPX2053GP | MPX2010GP | XGZP191 |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | CFSensor |
| Package | 4-SIP Case 344B-01 | 4-SIP Case 344B-01 - same | 4-SIP Case 344B-01 - same | 4-SIP Case 344B-01 - same | 4-SIP Case 344B-01 - same | 4-SIP Case 344B-01 - same | 4-SIP Case 344B-01 compatible |
| Pressure Type | Vented Gauge | Differential | Gauge (no port) | Vented Gauge | Vented Gauge | Vented Gauge | Gauge |
| Operating Pressure Range | 0 to 50 kPa (0 to 7.25 PSI) | 0 to 50 kPa | 0 to 50 kPa | 0 to 100 kPa | 0 to 50 kPa | 0 to 10 kPa | 0 to 50 kPa (configurable) |
| Full-Scale Output (typ @ 10 V) | 40 mV (4 mV/V) | 40 mV (4 mV/V) | 40 mV (4 mV/V) | 40 mV (4 mV/V) | 100 mV (10 mV/V, higher sensitivity) | 25 mV (2.5 mV/V) | ~40-100 mV (configurable) |
| Excitation Voltage | 10 V typical | 10 V typical | 10 V typical | 10 V typical | 10 V typical | 10 V typical | 5 V typical |
| Operating Temperature | 0C to +85C | 0C to +85C | 0C to +85C | 0C to +85C | 0C to +85C | 0C to +85C | -40C to +125C |
| Port Configuration | Single male 0.19" (4.93 mm) tube, vented gauge | Dual opposing ports, differential | No axial port (device only) | Single male 0.19" tube, vented gauge | Single male 0.19" tube, vented gauge | Single male 0.19" tube, vented gauge | Single port, gauge |
| Approx. Unit Price (1k qty) | $10.52 USD | $10-12 USD | $9-11 USD | $11-13 USD | $12-15 USD | $10-12 USD | $3-5 USD |
关键差异点
- Industry-standard 4 mV/V output and 50 kPa range in 4-SIP Case 344B-01 （对比 MPX2100GP)
- Vented-gauge port with male 4.93 mm tube for direct pneumatic integration （对比 MPX2050DP)
- On-chip temperature compensation and laser-trimmed calibration eliminate external trim components （对比 MPX2050D (no port))
设计说明
Estimated: power the MPX2050GP bridge with a clean, low-noise regulated 10 V DC source. The sensor draws only a few mA through its 1-2 kOhm bridge, so an LDO (e.g. LT3045 for low-noise analog rails) or a filtered DC-DC followed by an LC pi-filter is appropriate. Any ripple on the excitation rail couples directly into the 4 mV/V output, so for best SNR use ratiometric ADC measurement where the same 10 V serves as the ADC reference voltage - this cancels excitation drift automatically.
The 40 mV full-scale output is a low-level differential Wheatstone-bridge signal. Use a true instrumentation amplifier (e.g. INA125, AD620, INA128) with adequate CMRR (>80 dB) and low noise (<<1 uV/sqrt(Hz)) to extract the differential signal cleanly. Route bridge traces as a twisted pair or guarded differential pair, keep them short, and place the INA physically close to the SIP sensor to minimize common-mode pickup.
Do not apply pressure beyond the published maximum overpressure limit - the silicon diaphragm can crack. Mount the SIP module with mechanical stress relief on the tube port, never clamp the body rigidly. Avoid water-hammer transients in liquid systems; an RC snubber or in-line restrictor protects the die. Verify polarity: pins 1 and 3 are excitation, pins 2 and 4 are differential outputs - reversed wiring produces a negative-going output with increasing pressure.
The MPX2050GP is on-chip temperature compensated for 0C to +85C. For applications operating outside this band, or where absolute accuracy is paramount, add a software temperature correction using an external sensor (e.g. TMP36) on the SIP body. The laser-trimmed offset/span reduce but do not eliminate thermal drift; expect residual errors within datasheet limits over the compensated range.
合规信息
Lead-free (P suffix) and RoHS compliant per NXP/MPX2050 datasheet ordering information. Not AEC-Q100 qualified - this is an industrial/medical-grade sensor, not automotive.