MPX2102AP - 100kPa Absolute Pressure Sensor 4-SIP | STMicroelectronics
料号： MPX2102AP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $17.5 | $17.50 |
| 10 | $15.2 | $152.00 |
| 100 | $13.1 | $1,310.00 |
| 500 | $11.05 | $5,525.00 |
| 1,000 | $9.5 | $9,500.00 |
MPX2102AP 概述
A pressure sensor is a transducer that converts an applied physical pressure into a proportional electrical signal, serving as the analog front-end in fluid, gas, and atmospheric pressure measurement systems. Within the sensor hierarchy the MPX2102AP sits below board-mount pressure sensors and above bare silicon strain gauges; it provides a ratiometric analog output that downstream ADCs or instrumentation amplifiers digitize for system-level reporting. This category is essential in industrial process control, medical instrumentation, HVAC, and consumer appliances where precise pressure data drives safety, regulation, or measurement functions.
Key features of the MPX2102AP include 0 mV to 40 mV full-scale span at 10 V excitation, 1.0 ms response time, and robust ±14.5 PSI proof pressure ratings for the absolute configuration. The 4-SIP unibody package provides environmental isolation for the silicon die while exposing a standard barbed tube port for external media connection. Its integrated thin-film resistor network provides span and offset calibration.
The MPX2102AP uses a monolithic silicon diaphragm with integrated piezoresistive strain gauges arranged in a Wheatstone bridge configuration. Laser trim during wafer-level calibration removes initial offset and span errors, while on-board compensation resistors correct temperature drift across the operating range. The ratiometric analog output scales with supply voltage, simplifying ADC interfacing and preserving accuracy under varying supply conditions.
Typical applications include medical blood pressure monitors, HVAC duct pressure sensing, industrial pneumatic controllers, and barometric altimeters. The temperature-compensated output is suitable for battery-powered portable instruments that operate across wide thermal environments. The 4-SIP barbed port also simplifies integration with silicone tubing for medical and analytical instrumentation.
When designing with this part, place a low-offset, low-noise instrumentation amplifier (such as an INA126 or AD620 family) directly at the sensor output to amplify the 40 mV signal to a usable ADC input range. Provide a stable low-noise 10 V excitation (e.g. REF02 or equivalent) to preserve ratiometric accuracy, and isolate the analog and digital grounds with proper star-grounding.
直接替换替代料： MPX2102AP ——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： MPX2102AP （相同外形与封装尺寸） ——差异在于 Output Type, Operating Pressure Range, Mounting Type, Supply Voltage, Termination Style.
快速对比工具——选择替代料号进行并排对比：
MPX2202AP
✅ 直接替换✓ 有现货
$6.85 / 个
查看数据手册 →MPX2053GP
✅ 直接替换✓ 有现货
$9.75 / 个
查看数据手册 →MPX2102ASX
✅ 直接替换✓ 有现货
$10.95 / 个
查看数据手册 →MPX2102AP 最大额定值与电气特性
| Pressure Type | Absolute |
| Operating Pressure Range | 14.5 PSI (100 kPa) |
| Maximum Overload Pressure | 14.5 PSI (100 kPa) |
| Port Type | Male - 0.19" (4.93 mm) Tube |
| 输出类型 | Analog Wheatstone Bridge |
| 输出电压 | 0 mV to 40 mV at 10 V excitation |
| 电源电压 | 10 V (typical ratiometric) |
| Linearity | ±0.5% (typ) |
| 工作温度 | 0 °C to +85 °C |
| 封装 | 4-SIP Module (Unibody) |
| 安装类型 | Through-Hole |
| Diaphragm Technology | Silicon Piezoresistive |
| RoHS 状态 | Compliant |
| Style | Tube Port |
MPX2102AP 引脚配置
| 引脚 1 | Vout+ — Bridge output positive (scaled by applied pressure) |
| 引脚 2 | GND — Sensor ground reference |
| 引脚 3 | Vex — Excitation voltage (typically 10 V) |
| 引脚 4 | Vout- — Bridge output negative (calibration reference) |
典型应用
MPX2102AP 适用于 7 应用s: Medical Blood Pressure Monitors, HVAC Duct Pressure Monitoring, Industrial Pneumatic Controllers, Barometric Altimeters and Weather Stations, Liquid Level Sensing via Bubbler Systems, Respiratory and Spirometer Devices, Gas Flow and Air Mass Measurement.
Medical Blood Pressure Monitors
The MPX2102AP delivers calibrated 100 kPa absolute pressure sensing for automated and ambulatory blood pressure cuffs. Its 0.5% linearity and on-chip temperature compensation from 0-85C enable direct A/D conversion without external calibration, while the 0.19" tube port connects to disposable silicone tubing. The 40 mV span at 10V excitation drives an instrumentation amplifier front-end such as the INA128 before the system ADC, achieving clinical-grade accuracy across patient measurements.
推荐
HVAC Duct Pressure Monitoring
Building HVAC systems use the MPX2102AP to monitor static duct pressure for filter status detection and fan control. Its 100 kPa range covers the typical operating envelope of residential and commercial air-handling systems, while the unibody 4-SIP package withstands installation temperature swings. The ratiometric 40 mV span feeds directly into a microcontroller ADC with excitation tied to the same reference, eliminating supply-drift errors across temperature variations in duct environments.
推荐
Industrial Pneumatic Controllers
Pneumatic control systems in factory automation apply the MPX2102AP for closed-loop regulator feedback at pressures up to 100 kPa absolute. The Wheatstone bridge output, after a low-offset amplifier like the AD620, drives a PID controller that adjusts solenoid valves to maintain setpoint. The through-hole 4-SIP package provides mechanical robustness in industrial enclosures, and the integrated temperature compensation prevents drift across the factory ambient range.
推荐
Barometric Altimeters and Weather Stations
Consumer weather stations and altimeter modules use the MPX2102AP to measure atmospheric pressure with 100 kPa full-scale range, equivalent to the standard atmosphere. Its 40 mV span drives a 24-bit sigma-delta ADC that resolves sub-pascal altitude changes. On-chip temperature compensation minimizes the drift that otherwise degrades altitude readings across weather-station operating temperatures, and the ratiometric output pairs with precision voltage references for accurate absolute pressure data.
推荐
Liquid Level Sensing via Bubbler Systems
Process control and tank-level measurement use the MPX2102AP at the heart of bubbler-type liquid-level systems where a bubble tube delivers hydrostatic pressure proportional to liquid height. The 100 kPa range covers tanks up to approximately 10 meters of water column, and the tube-style port simplifies Pneumatic integration. After amplification, the signal drives a PLC analog input for tank-level display and pump control with high reliability in chemical and water-treatment plants.
推荐
Respiratory and Spirometer Devices
Spirometers and respiratory flow measurement equipment use the MPX2102AP to measure pressure drop across a flow restriction, computing breathing parameters. The 100 kPa absolute range, low 0.5% linearity, and fast response make the part well-suited to peak-flow and FEV1 measurements. The unibody package provides isolation between the patient interface and electronics, while the small signal span pairs with low-noise amplifiers such as the OPA2227 to drive the system ADC.
推荐
Gas Flow and Air Mass Measurement
Industrial gas flow meters and air-mass measurement systems sense the differential pressure across laminar flow elements using the MPX2102AP in pairs. The 40 mV span and 0.5% linearity translate directly into flow-rate calculations once calibrated against reference gases. The 4-SIP package installs inside mass-flow controller housings where space is constrained, and the integrated temperature compensation reduces recalibration intervals over the equipment lifetime.
推荐
推荐产品汇总
工程参考数据： MPX2102AP ——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 | MPX2202AP | MPX2053GP | MPX2102ASX | MPX2202GP | MPX53GP |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 4-SIP Module | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same |
| Pressure Type | Absolute | Absolute | Gauge | Absolute | Gauge | Gauge |
| Pressure Range | 100 kPa (14.5 PSI) | 200 kPa (29 PSI) | 50 kPa (7.3 PSI) | 100 kPa (14.5 PSI) | 200 kPa (29 PSI) | 50 kPa (7.3 PSI) |
| Output Span (10V) | 40 mV | 40 mV | 40 mV | 40 mV | 40 mV | 40 mV |
| Port Style | Top tube port | Top tube port | Side port | Axial side port | Side port | Side port |
| Operating 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 |
| Linearity | ±0.5% (typ) | ±0.5% (typ) | ±0.5% (typ) | ±0.5% (typ) | ±0.5% (typ) | ±0.5% (typ) |
关键差异点
- On-chip temperature compensation （对比 MPX53GP)
- Absolute pressure reference （对比 MPX2053GP)
- Top tube port orientation （对比 MPX2102ASX)
- 100 kPa full scale （对比 MPX2202AP)
设计说明
Avoid long PCB traces between the sensor Wheatstone bridge and the instrumentation amplifier; even a few cm of unshielded wiring picks up EMI that competes with the 40 mV full-scale signal. Place the INA128 (or equivalent) within 5 cm of the SIP pins and use a guard trace tied to ground. If the analog front-end must be remote, buffer the signal at the sensor with a low-noise op-amp follower.
The MPX2102AP is a ratiometric sensor: connect its excitation voltage (Vex) to the same 10 V reference that drives your ADC reference input. This guarantees that supply noise and drift cancel out, since the output span scales linearly with Vex. A dedicated REF02 or LT1021 low-noise 10 V reference is recommended over a simple regulator. Estimated: at 10 V excitation, the bridge draws 6 mA typical (Vex*5 mA typical per arm).
Stabilize the sensor supply with a 0.1 µF ceramic bypass capacitor placed as close to the Vex pin as possible. The 4-SIP package should be mechanically supported against vibration in industrial enclosures; use epoxy strain relief or a foam gasket to decouple the tube port from the PCB. Maintain a small thermal copper pour to avoid thermally-induced offset drift; do not route high-current digital traces directly under the SIP body.
The 40 mV span is small compared to typical noise floors of switched-mode supplies. Keep the bridge ground separated from high-current grounds using a Kelvin connection at the sensor pins. If the system is exposed to electrostatic discharge (ESD), add TVS diodes such as PESD3V3L4UG across the bridge outputs. EMI ferrites on supply and signal lines improve noise immunity in motor and solenoid environments.
合规信息
RoHS compliant per STMicroelectronics product page. Lead-free 4-SIP package. AEC-Q100 qualification is not applicable for non-automotive pressure sensors.
