MPX2102D - 100kPa Differential Pressure Sensor | NXP | 4-SIP Module
料号： MPX2102D ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $21.75 | $217.50 |
| 100 | $18.2 | $1,820.00 |
| 500 | $15.4 | $7,700.00 |
| 1,000 | $13.1 | $13,100.00 |
MPX2102D 概述
A piezoresistive pressure sensor is a MEMS device that converts applied mechanical pressure into a proportional electrical signal using strain-sensitive resistors embedded in a silicon diaphragm. When pressure deforms the diaphragm, the embedded Wheatstone bridge resistors change resistance, producing a differential output voltage. Piezoresistive sensors such as the MPX2102D sit at the bottom of the sensor hierarchy: pressure sensor -> MEMS sensor -> transducer -> sensor IC. They are widely used where continuous analog pressure monitoring is required rather than a simple threshold switch.
Key features of the MPX2102D include on-chip temperature compensation from 0 C to +85 C, a 0 mV to 40 mV full-scale output, a typical full-scale span of 40 mV at 10 V supply, low offse drift, and a rugged unibody 4-SIP package with dual pressure ports for differential measurement. The integrated signal conditioning and calibration performed at the wafer level eliminate the need for external compensation networks, simplifying downstream amplifier design.
The die uses a piezoresistive Wheatstone bridge configured for differential pressure sensing, with a separate reference port exposed on the side of the 4-SIP module opposite the high-pressure port. The on-chip laser-trimmed resistors provide temperature compensation across the rated range, which is essential because raw silicon piezoresistors exhibit strong temperature coefficients that would otherwise degrade measurement accuracy.
Typical applications include HVAC airflow monitoring, medical respiration and anesthesia equipment, industrial process control, altimeters and barometric instrumentation, and pneumatic control systems. Its differential measurement capability also makes it well-suited to liquid-level sensing via hydrostatic pressure.
When designing with the MPX2102D, ensure that the 10 V excitation supply is well-regulated because output accuracy scales linearly with supply voltage. The Wheatstone bridge output is in the millivolt range and typically requires an instrumentation amplifier such as the INA128 or AD620 before the ADC input. Differential measurements should use both pressure ports and avoid clogging either with particulates.
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： MPX2102D ——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： MPX2102D （相同外形与封装尺寸） ——差异在于 Output Type, Operating Pressure Range, Mounting Type, Pressure Type, Package / Case.
快速对比工具——选择替代料号进行并排对比：
MPX2102A
✅ 直接替换✓ 有现货
$10.95 / 个
查看数据手册 →MPX2102AP
✅ 直接替换✓ 有现货
$9.5 / 个
查看数据手册 →MPX2102DP
✅ 直接替换✓ 有现货
$9.85 / 个
查看数据手册 →MPXV2102G
✅ 直接替换📋 参考替代料（不在目录中）
MPX2010D
✅ 直接替换✓ 有现货
$9.1 / 个
查看数据手册 →MPX2102D 最大额定值与电气特性
| Operating Pressure | 14.5 PSI (100 kPa) |
| Pressure Type | Differential |
| 输出类型 | Wheatstone Bridge (Analog Voltage) |
| 输出电压 | 0 mV to 40 mV (at 10 V supply) |
| 电源电压 | 10 V typical |
| 封装 / 外壳 | 4-SIP Module |
| Port Size | Female, 0.136 in (3.4544 mm) |
| Termination Style | Through-Hole PCB |
| 安装类型 | Through Hole |
| Applications | Board Mount |
| 工作温度 | -40 C to +125 C (per NXP MPX2102 series datasheet) |
| Compensated Temperature | 0 C to +85 C |
| Housing / Body Style | Unibody Plastic (Round) |
| Technology | Piezoresistive Silicon MEMS |
| Series | MPX2102 |
| Packaging | Tray |
| Product Status | Obsolete (per distributor listings) |
MPX2102D 引脚配置
| 引脚 1 | VCC — Bridge excitation supply (10 V typical) |
| 引脚 2 | VOUT+ — Positive bridge output |
| 引脚 3 | GND — Bridge ground reference |
| 引脚 4 | VOUT- — Negative bridge output |
典型应用
MPX2102D 适用于 6 应用s: HVAC Airflow and Duct Pressure Monitoring, Medical Respiration and Anesthesia Equipment, Industrial Process Control and Pneumatic Systems, Altimeters and Barometric Instrumentation, Liquid-Level Sensing via Hydrostatic Pressure, Portable Gas Flow and Leak Detection.
HVAC Airflow and Duct Pressure Monitoring
The MPX2102D's 100 kPa differential rating and millivolt Wheatstone bridge output make it suitable for HVAC duct static pressure and airflow monitoring. Differential measurement across an orifice plate or Pitot tube captures airflow-induced pressure drop with high linearity across the 0 to 100 kPa span. The on-chip 0 C to +85 C temperature compensation keeps the sensor stable across the typical HVAC operating envelope, while the unibody 4-SIP package withstands the temperature and humidity swings found in air-handling plenums. A typical signal chain pairs the MPX2102D with an INA128 instrumentation amplifier and a 24-bit ADC for low-noise pressure digitization in building-automation controllers.
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Medical Respiration and Anesthesia Equipment
The MPX2102D's 100 kPa range covers airway pressures encountered in ventilators, CPAP machines, and anesthesia circuits where peak inspiratory pressures rarely exceed 60 mbar to 80 mbar. The differential configuration allows reference-port sensing against ambient, so the circuit measures true gauge pressure without an external reference. The silicon piezoresistive die offers the long-term stability required for medical instrumentation, and the on-chip temperature compensation minimizes drift across the clinical environment. Biocompatibility for the patient side is handled via tubing and bacterial filters, while the unibody module mounts directly on the equipment chassis.
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Industrial Process Control and Pneumatic Systems
Factory automation systems that monitor compressed-air lines, hydraulic pressures, and vacuum levels are well served by the MPX2102D's 100 kPa span. The rugged unibody 4-SIP housing tolerates the vibration and temperature gradients common in industrial cabinets, and the through-hole mounting survives factory-floor handling during service. The differential output lets the system measure positive line pressure against a vented reference port, simplifying plumbing on a control panel. Plant operators typically pair the MPX2102D with a 4-20 mA transmitter board so the signal can travel long distances without EMI pickup.
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Altimeters and Barometric Instrumentation
The MPX2102D's 100 kPa range corresponds to approximately 0 to 10,000 meters of altitude when used as a barometer, covering most recreational, drone, and weather-station applications. Differential measurement against a sealed reference is impractical outdoors, but the absolute-pressure MPX2102A variant shares the same die and footprint. Designers typically compensate the altitude reading in firmware using the barometric formula plus a temperature sensor for highest accuracy. Low-power consumption makes the part attractive for battery-operated weather stations and balloon payloads.
推荐
Liquid-Level Sensing via Hydrostatic Pressure
The MPX2102D can measure liquid levels in tanks and reservoirs by sensing the hydrostatic pressure at the bottom of the column, where 100 kPa spans about 10 meters of water. The differential port configuration allows reference-port venting to atmospheric pressure, eliminating barometric drift. Industrial and agricultural tanks benefit from the unibody 4-SIP package's chemical resistance when used with compatible tubing. Designers should still add a vented cable and a moisture barrier for outdoor installations, and they typically pair the bridge output with a low-offset instrumentation amp.
推荐
Portable Gas Flow and Leak Detection
Handheld gas-flow analyzers and leak detectors use the MPX2102D's 100 kPa differential range to measure small pressure drops across flow elements. Millivolt resolution from the Wheatstone bridge is well suited to detecting sub-Pa changes when the signal chain includes a high-gain, low-noise amplifier. Battery-operated designs benefit from the predictable ratiometric output, which scales with supply voltage and supports low-duty-cycle excitation to conserve power. The through-hole 4-SIP package is robust enough to survive repeated field use in service-truck environments.
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推荐产品汇总
工程参考数据： MPX2102D ——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 | MPX2102A | MPX2102AP | MPX2102DP | MPXV2102G | MPX2010D | MPX5010DP |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 4-SIP Module | 4-SIP Module | 4-SIP Module | 4-SIP Module | 4-SIP Module | 4-SIP Module | 6-SIP Module |
| Operating Pressure | 14.5 PSI (100 kPa) | 14.5 PSI (100 kPa) | 14.5 PSI (100 kPa) | 14.5 PSI (100 kPa) | 14.5 PSI (100 kPa) | 1.45 PSI (10 kPa) | 1.45 PSI (10 kPa) |
| Pressure Type | Differential | Absolute | Absolute, ported | Differential, ported | Gauge | Differential | Differential, ported |
| Output Type | Wheatstone Bridge, 0-40 mV | Wheatstone Bridge, 0-40 mV | Wheatstone Bridge, 0-40 mV | Wheatstone Bridge, 0-40 mV | Wheatstone Bridge, 0-40 mV | Wheatstone Bridge, 0-25 mV | Conditioned, 0-5 V |
| Supply Voltage | 10 V | 10 V | 10 V | 10 V | 10 V | 10 V | 5 V |
| Compensated Temperature | 0 C to +85 C | 0 C to +85 C | 0 C to +85 C | 0 C to +85 C | 0 C to +85 C | 0 C to +85 C | -40 C to +125 C |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
关键差异点
- Raw Wheatstone bridge output for direct signal-chain integration （对比 MPX5010DP)
- Differential measurement against a vented reference port （对比 MPX2102A)
- Industry-standard 4-SIP unibody package （对比 MPXV2102G)
设计说明
The MPX2102D Wheatstone bridge output is ratiometric with the 10 V excitation supply, so any drift or ripple on the excitation directly translates into measurement error. Estimated: a 100 mV ripple on the 10 V supply introduces roughly 0.4 mV of bridge output noise, which at a 40 mV full-scale span is 1% full-scale error. Use a low-dropout regulator such as the LT3042 or a precision 10 V reference to drive the bridge for repeatable readings, and add 100 nF ceramic decoupling close to the bridge pins to suppress high-frequency noise.
The MPX2102D outputs a 40 mV differential signal that is vulnerable to common-mode noise, especially in industrial environments with motors or solenoid drivers. Use a true differential instrumentation amplifier (INA128, AD620, or INA333) rather than a single-ended op-amp configuration. Twisted-pair wiring from the sensor to the amplifier, plus a guard ring on the PCB, will reject coupled noise. For long cable runs, route the bridge output through shielded cable to avoid 50/60 Hz pickup from adjacent power conductors.
The 4-SIP module is through-hole mounted, so plan the PCB layout around the lead spacing and the dual-port housing. Estimated: the package body occupies roughly 12 mm x 9 mm of board area and requires at least 6 mm of additional clearance for the side port. Keep the bridge excitation and output traces short and parallel, and place a 100 nF decoupling capacitor within 5 mm of the VCC pin. Use a ground plane and avoid routing noisy digital signals directly beneath the sensor body.
Do not apply pressure exceeding 14.5 PSI (100 kPa) to the MPX2102D - the die will permanently deform and the output will be uncalibrated. Estimated: the burst pressure of a typical MPX2102-series die is roughly 2x to 3x the rated full-scale, so a 1.5x overpressure event can shorten the service life. Add a mechanical pressure snubber or a software alarm when the application can spike above the rated range. Also remember that differential pressure sensors measure the difference between the two ports - blocking one port turns the device into a sealed gauge reference, which is rarely the intent in circuit design.
合规信息
Compliance status not explicitly listed in the Verified Web Data sources reviewed. The MPX2102 family predates RoHS, so older date-code inventory may be non-compliant. Verify RoHS and lead-free markings on the shipping reel before commissioning for a new design.