MPX2102GP - 100kPa Vented Gauge Pressure Sensor | NXP
MPN: MPX2102GP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.95 | $9.95 |
| 10 | $8.92 | $89.20 |
| 100 | $7.45 | $745.00 |
| 500 | $6.3 | $3,150.00 |
| 1,000 | $5.4 | $5,400.00 |
MPX2102GP Overview
A piezoresistive pressure sensor is a MEMS device in which strain gauges integrated on a silicon diaphragm change resistance when pressure deflects the membrane. The sensor therefore sits within the broader hierarchy: pressure sensor -> pressure transducer -> sensor IC -> semiconductor, and is commonly used wherever a microcontroller or ADC must read a physical pressure value as an analog voltage. The MPX2102 series adds on-chip thin-film resistor networks that are laser-trimmed for gain and offset calibration and temperature compensated across the 0 C to +85 C range, removing most of the external compensation that earlier raw bridge sensors required.
Key features include a 0 to 100 kPa (0 to 14.5 PSI) operating range, full-scale output of 40 mV at 10 V supply, sensitivity of approximately 0.4 mV/kPa, differential vented-gauge topology, 1.0 % maximum linearity, and integrated temperature compensation from 0 C to +85 C. The unibody package provides a single-piece stress-isolated silicon die, eliminating plastic-to-silicon thermal mismatch and improving long-term drift compared with epoxy-mounted designs.
The architecture uses a single monolithic silicon diaphragm with the strain gauge and thin-film resistor network integrated on-chip. Laser trimming during wafer fab calibrates offset and span so each unit is interchangeable without per-device trimming. The vented-gauge port exposes the back side of the die to atmosphere through the housing, so the output always references ambient barometric pressure rather than a sealed vacuum - important for weather, respiration, and altitude-relative instrumentation.
Typical applications include medical respiration and CPAP airflow monitoring, HVAC and air-flow meters, altitude and barometric reference sensing, industrial pneumatic pressure monitoring, weather stations, and altitude-correcting instrumentation for drones or wearables. The 40 mV full-scale swing is well-matched to instrumentation amplifiers and 12-bit ADC front ends.
When designing with this device, plan for a high-gain instrumentation amplifier stage after the bridge because the native 40 mV output is small. Use a stable low-noise 10 V excitation supply because span and offset track Vexcitation; any ripple on Vexcitation becomes ripple on the output. Apply conformal coating or potting if the vented port is exposed to condensing humidity.
This page synthesizes distributor pricing, drop-in package-equivalent alternatives from NXP and STMicroelectronics, and practical design notes that are not contained in the manufacturer datasheet alone.
Drop-in alternatives for MPX2102GP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MPX2102GP (same form factor and footprint) — differing in Mounting Type, Operating Pressure Range, Package / Case, Port Size, Pressure Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPX2100GP
✅ Drop-In✓ In Stock
$10.4 / Unit
View Datasheet →MPXV2102GP
✅ Drop-In✓ In Stock
$5.6 / Unit
View Datasheet →MPX2202GP
✅ Drop-In✓ In Stock
$24.8 / Unit
View Datasheet →MPX2010GP
✅ Drop-In✓ In Stock
$7.2 / Unit
View Datasheet →MPX2100AP
✅ Drop-In✓ In Stock
$11.85 / Unit
View Datasheet →XGZP191
✅ Drop-In📋 Reference alternative (not in catalog)
MPX2102GP Maximum Ratings & Electrical Characteristics
| Pressure Type | Vented Gauge |
| Operating Pressure Range | 0 kPa to 100 kPa (0 PSI to 14.5 PSI) |
| Full-Scale Output (VoutFS) | 40 mV at 10 V excitation |
| Output Voltage Range | 0 mV to 40 mV |
| Excitation Voltage | 10 V typical (DC) |
| Sensitivity | 0.4 mV/kPa nominal |
| Linearity | 1.0 % maximum |
| Pressure Port | Male 0.19 in (4.93 mm) tube |
| Operating Temperature | 0 C to +85 C |
| Temperature Compensation Range | 0 C to +85 C (on-chip) |
| Package | 4-SIP Module (Unibody GP) |
| Mounting Type | Through-Hole SIP |
| Sensor Technology | Silicon piezoresistive, monolithic diaphragm |
| Offset (null) | 0 mV to 1 mV typical |
| RoHS Status | Compliant |
MPX2102GP Pin Configuration
| Pin 1 | VS — Excitation voltage (+10 V typical) |
| Pin 2 | Vout+ — Differential positive output |
| Pin 3 | GND — Ground reference for bridge and output |
| Pin 4 | Vout- — Differential negative output |
Typical Applications
MPX2102GP is suitable for 6 applications: Medical Respiration and CPAP Airflow Monitoring, HVAC Air Duct and Filter Pressure Monitoring, Barometric Altitude Reference for Drones and Wearables, Industrial Pneumatic Pressure Switch, Weather Station and Indoor Air Quality Monitor, Portable Altimeter and Outdoor Adventure Electronics.
Medical Respiration and CPAP Airflow Monitoring
The MPX2102GP is well suited to respiration and CPAP airflow circuits where the airway pressure typically spans 0-40 cmH2O (about 0-4 kPa) with transient peaks up to 20-30 kPa during coughing. The sensor's 100 kPa full-scale range gives substantial headroom above any normal breathing waveform while its 0.4 mV/kPa sensitivity resolves sub-cmH2O pressure changes when paired with a low-noise instrumentation amplifier. The vented-gauge reference automatically compensates for ambient barometric variation, which matters in portable ventilators exposed to altitude changes. The 0 C to +85 C on-chip temperature compensation keeps the calibration stable across the patient's exhaled airflow temperature range. Designers typically add a bacterial filter in front of the 4.93 mm port and pot the SIP body for hygiene.
Recommended
HVAC Air Duct and Filter Pressure Monitoring
In HVAC systems the MPX2102GP monitors static duct pressure and filter differential pressure where 0-14.5 PSI covers the full supply-air range of small commercial fans. The vented-gauge topology references ambient pressure so readings are stable regardless of building altitude, and the 40 mV full-scale output drives directly into a differential ADC channel after a 50x instrumentation gain stage. Compared with bare piezoresistive bridges, the on-chip temperature compensation eliminates the long warm-up drift that confuses filter-load detection during cold-start. The unibody SIP body mounts through-hole, simplifying field-serviceable assemblies. The 1.0 % linearity is adequate for clogged-filter alarm thresholds (typically set 2-3x above clean-baseline).
Recommended
Barometric Altitude Reference for Drones and Wearables
For drones, GPS-aiding modules, and hiking watches, the MPX2102GP provides a 0-100 kPa vented-gauge barometric measurement from which altitude is computed via the international barometric formula. The vented reference means the device reports local pressure directly without absolute-mode correction, which is exactly what altitude algorithms expect. The 100 kPa ceiling covers all surface altitudes (sea level through 30+ km high-altitude balloons stay within range). Pair the sensor with a low-drift op-amp front end and a 16-24 bit sigma-delta ADC; each meter of altitude change requires about 12 Pa of resolution. The 0-85 C compensation handles outdoor temperature extremes including solar heating of the sensor body.
Recommended
Industrial Pneumatic Pressure Switch
Pneumatic pressure switches and leak-test fixtures in the 0-100 kPa range match the MPX2102GP's 14.5 PSI full-scale directly. The sensor outputs a clean linear voltage to a comparator chain that triggers a solenoid or alarm when setpoint thresholds are exceeded. The 1.0 % linearity is tight enough for accurate pressure-setpoint calibration without per-fixture trim. Vented-gauge operation makes the device self-referencing for compressed-air versus atmospheric leak testing. The through-hole SIP body survives industrial vibration profiles when potted into the fixture head. NXP's stress-isolated unibody package avoids the plastic-mount creep that degrades older epoxy-mounted sensors after years in the field.
Recommended
Weather Station and Indoor Air Quality Monitor
Weather stations and indoor-air-quality monitors use the MPX2102GP to report local barometric pressure for forecasting models and storm-detection algorithms. The 0-100 kPa range encompasses all realistic surface pressures (about 87-108 kPa globally), and the 40 mV output is easily digitized to 0.01 kPa resolution with a 16-bit ADC. The on-chip temperature compensation from 0-85 C removes the warm-up transient that affects outdoor sensors exposed to direct sun. The vented-gauge port allows the sensor to reference ambient air directly through the housing, so installation does not require sealed tubing. NXP's datasheet specifies typical long-term drift below 1 kPa per year, suitable for climate-grade weather stations.
Recommended
Portable Altimeter and Outdoor Adventure Electronics
Handheld altimeters, climbing watches, and outdoor adventure electronics use the MPX2102GP as the primary barometric pressure sensor because the device's 0-100 kPa vented range directly maps to altitude via the standard atmosphere model. The sensor's small 4-SIP body fits inside a watch case, and its 40 mV full-scale output pairs with a low-noise instrumentation front end plus 24-bit ADC to achieve sub-meter altitude resolution after filtering. The vented reference lets the device track ambient pressure changes that correspond to weather fronts, an extra feature used in many climbing watches. Battery-powered designs benefit from the ratiometric output because regulated 10 V excitation can be duty-cycled to save power between samples.
Recommended
Recommended Products Summary
Engineering reference data for MPX2102GP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPX2100GP | MPXV2102GP | MPX2202GP | MPX2010GP | MPX2100AP | XGZP191 |
|---|---|---|---|---|---|---|---|
| Package | 4-SIP Module (Unibody GP) | 4-SIP Module (Unibody GP) - same | 4-SIP Module (small-port) - same family | 4-SIP Module (Unibody GP) - same | 4-SIP Module (Unibody GP) - same | 4-SIP Module (Unibody AP axial-port) | 4-SIP Module (GP-equivalent SIP) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | CFSensor |
| Pressure Type | Vented Gauge | Vented Gauge | Vented Gauge | Vented Gauge | Vented Gauge | Vented Gauge | Gauge / Absolute (variant) |
| Operating Pressure Range | 0 to 100 kPa | 0 to 100 kPa | 0 to 100 kPa | 0 to 200 kPa | 0 to 10 kPa | 0 to 100 kPa | Configurable to 100 kPa |
| Full-Scale Output | 40 mV at 10 V | 40 mV at 10 V | 40 mV at 10 V | 40 mV at 10 V | 25 mV at 10 V | 40 mV at 10 V | ~50 mV at 5 V typical |
| Excitation Voltage | 10 V typical | 10 V typical | 10 V typical | 10 V typical | 10 V typical | 10 V typical | 5 V DC |
| 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 | -40 C to +125 C |
| On-Chip Temperature Compensation | Yes (0 to +85 C) | Yes (0 to +85 C) | Yes (0 to +85 C) | Yes (0 to +85 C) | Yes (0 to +85 C) | Yes (0 to +85 C) | Yes (external calibration typical) |
Key Differentiators
- Same 4-SIP unibody pinout as the broader MPX2102 family (vs MPX2100GP)
- On-chip laser-trimmed temperature compensation (vs MPX2010GP)
- Single-source NXP family with no second-source licensing (vs XGZP191 (CFSensor))
- 40 mV full-scale output at 10 V excitation gives predictable signal conditioning (vs MPX2202GP (200 kPa range))
Design Notes
The MPX2102GP outputs only 40 mV full-scale at 10 V excitation, so it must drive a low-offset, low-noise instrumentation amplifier such as the INA128 or AD8421 with gain of 50-100 to reach ADC-friendly voltage levels. Use a stable low-ripple 10 V excitation supply (LDO after a switching pre-regulator, or a low-noise reference) because span and offset are ratiometric to Vexcitation; any noise or drift on the 10 V rail appears directly on the output. Decouple the excitation rail with 100 nF ceramic plus 10 uF bulk at the sensor pins. Route the differential bridge traces as a twisted or guarded pair back to the instrumentation amplifier to reject common-mode pickup.
Although the MPX2102GP integrates on-chip temperature compensation across 0 C to +85 C, the compensation is calibrated at 10 V excitation. Operating outside this excitation voltage invalidates the temperature curves, so designers using duty-cycled or non-10 V supplies must recalibrate offset and span for the actual Vexcitation used. Avoid placing heat-generating components (LDOs, power resistors) within 5 mm of the SIP body because thermal gradients across the unibody package cause apparent pressure shifts. For outdoor or weather-station deployments, shield the body from direct solar radiation with a radiation shield.
Mount the MPX2102GP through-hole SIP package vertically on the PCB so the 4.93 mm pressure port faces the source of pressure without strain on the leads. Provide a sealed pneumatic path between the port and the measurement point - any leak in the tubing acts as a low-pass filter on the pressure signal and degrades dynamic response. Use flexible silicone tubing rather than PVC which can leach plasticizers and contaminate the port. Avoid bending the SIP pins close to the body; the unibody stress isolation design requires mechanical isolation from the PCB for best long-term drift performance.
Do not connect the bridge outputs (pins 2 and 4) directly to a single-ended ADC without an instrumentation amplifier, because common-mode voltage near half-excitation will not be rejected and the small 40 mV signal will be lost in the ADC's input range. Do not block the vented-gauge port; the device references ambient pressure through the housing and sealing the port converts it to a sealed-gauge sensor with a different zero. Do not apply liquids or condensing humidity without a hydrophobic filter, because corrosion of the thin-film resistor network permanently shifts calibration.
Compliance Information
RoHS compliant per NXP product page. Pressure sensors are not typically AEC-Q100 qualified because they are not automotive silicon ICs in the discrete component sense; consult NXP automotive-grade portfolio separately for automotive sensor options.
