MPXM2102A - 100kPa Absolute Pressure Sensor, 10V | NXP
MPN: MPXM2102A ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.5 | $1,350.00 |
| 500 | $11.85 | $5,925.00 |
| 1,000 | $10.4 | $10,400.00 |
MPXM2102A Overview
An absolute pressure sensor is a transducer that generates an electronic signal as a direct function of the pressure imposed on its sensing diaphragm, referenced to a sealed internal vacuum cavity rather than ambient air. Piezoresistive sensors belong to the broader sensor hierarchy of MEMS devices -> semiconductor transducers -> signal-conditioning front-ends, and they are commonly paired with instrumentation amplifiers in the system signal chain. The MPXM2102A integrates on-chip temperature compensation, eliminating the need for external thermistor linearization in many embedded designs.
Key features include a typical full-scale span of 40 mV at 10 V excitation, a 1.0 kOhm bridge impedance, ±0.1% linearity across the 0-100 kPa range, and a -40C to +125C operating temperature window with calibrated thermal behavior. The device operates from a 10 V DC nominal supply with low current draw, and its 5-MPAK module package provides easy PCB mounting alongside standard SMD components. The Wheatstone-bridge output enables direct interface to a differential ADC or op-amp front end.
The MPXM2102A uses a monolithic silicon strain-gauge diaphragm die bonded inside the plastic 5-MPAK housing, with laser-trimmed resistors providing temperature compensation across the qualified range. Pressure applied to the front face deflects the diaphragm, changing the piezoresistor bridge balance and producing a differential millivolt signal proportional to absolute pressure. This analog output preserves native fidelity and lets designers choose their own amplification and filtering topology.
Typical applications include medical spirometers and patient monitors, industrial process-control pressure transmitters, barometric altimeter reference designs, HVAC duct pressure sensing, and portable gas flow instrumentation. The 14.5 PSI absolute range suits body-pressure, weather-station, and low-pressure industrial use cases.
When designing with the MPXM2102A, route the bridge excitation through a quiet, low-noise supply and place an instrumentation amplifier (such as an INA126 or AD620) within 20 mm of the output pins to minimize common-mode pickup. Use separate analog and digital grounds tied at a single star point near the ADC.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for MPXM2102A — 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 MPXM2102A (same form factor and footprint) — differing in Package, Output Type, Operating Pressure Range, Supply Voltage, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPXM2102AS
✅ Drop-In✓ In Stock
$17.4 / Unit
View Datasheet →MPXM2102AST1
✅ Drop-In✓ In Stock
$10.65 / Unit
View Datasheet →MPXM2102A
✅ Drop-In✓ In Stock
$10.4 / Unit
View Datasheet →MPX2102ASX
✅ Drop-In✓ In Stock
$10.95 / Unit
View Datasheet →MPXM2102D
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.1 / Unit
View Datasheet →MPX2102AP
✅ Drop-In✓ In Stock
$9.5 / Unit
View Datasheet →MPXM2102A Maximum Ratings & Electrical Characteristics
| Sensor Type | Absolute Pressure |
| Operating Pressure Range | 14.5 PSI (100 kPa) |
| Maximum Overpressure | 58.02 PSI (400 kPa) |
| Output Type | Wheatstone Bridge (analog, differential) |
| Output Voltage Span | 0 mV to 40 mV (at 10 V excitation) |
| Supply Voltage | 10 V DC nominal |
| Operating Pressure Range (kPa) | 0 kPa to 100 kPa absolute |
| Pressure Port Style | No Port (board mount) |
| Bridge Impedance | 1.0 kOhm to 4.0 kOhm |
| Operating Temperature | -40C to +125C |
| Package | 5-SMD Module (MPAK) |
| Termination Style | Gull Wing |
| Supplier Device Package | 5-MPAK |
| Case Outline | CASE 1320 |
| Mounting Type | Surface Mount, Board Mount |
| Technology | Silicon Piezoresistive, on-chip temperature compensated |
MPXM2102A Pin Configuration
| Pin 1 | Vcc (Excitation +) — Bridge excitation voltage input (10 V DC nominal) |
| Pin 2 | Vout+ — Bridge output positive (differential, 0-40 mV) |
| Pin 3 | Vss / GND (Excitation -) — Bridge excitation return and signal ground |
| Pin 4 | Vout- — Bridge output negative (differential, 0-40 mV) |
| Pin 5 | NC / Lid — Lid connection or unconnected internal node (per CASE 1320 outline) |
Typical Applications
MPXM2102A is suitable for 6 applications: Medical Spirometer and Patient Monitor, Barometric Altimeter and Weather Station, HVAC Duct Pressure Sensing, Industrial Process-Control Pressure Transmitter, Portable Gas Flow Instrumentation, Automotive Manifold Absolute Pressure (MAP) Reference Design.
Medical Spirometer and Patient Monitor
Spirometers and patient monitors demand accurate low-pressure measurement across the 0-100 kPa absolute window that mirrors human respiratory pressure swings. The MPXM2102A is a strong fit because its on-chip temperature compensation holds 40 mV span accuracy over -40C to +125C, eliminating the thermal drift that would otherwise corrupt breath-by-breath readings. Paired with an instrumentation amplifier (such as an INA126) and a 16-bit ADC, the MPXM2102A delivers clinically meaningful flow and pressure data. The 5-MPAK surface-mount footprint allows the transducer to sit directly on a compact PCB inside a handheld medical device, simplifying sterilization-friendly sealed enclosures.
Recommended
Barometric Altimeter and Weather Station
Barometric altimeter and weather-station designs rely on absolute pressure measurements between 30 kPa and 110 kPa, exactly the span supported by the MPXM2102A. The sensor's linear 40 mV transfer function at 10 V excitation lets designers resolve altitude to roughly 5-10 m after a single-point calibration, which is sufficient for hobby and consumer weather use. Low power and a small SMD outline suit battery-driven portable stations. The integrated temperature compensation removes the leading-order drift contributor, so a single reference transfer function remains valid across outdoor thermal cycles from -20C to +50C.
Recommended
HVAC Duct Pressure Sensing
HVAC duct pressure sensors measure 0-100 kPa absolute pressure across air-handling ductwork and blower manifolds, a range that the MPXM2102A covers natively. Its 5-MPAK SMT module makes board-mount integration simple behind a duct-pressure tap, while the on-chip temperature compensation prevents fan self-heating from biasing the reading across long operating hours. The 40 mV analog output is convenient for direct feed into a 4-20 mA loop transmitter, giving the sensor a path to industrial PLC input modules and to building automation controllers. With ±0.1% linearity, the transducer supports well-calibrated VAV (variable air volume) box feedback and filter-status detection.
Recommended
Industrial Process-Control Pressure Transmitter
Industrial pressure transmitters require a stable analog absolute-pressure front end that survives harsh environments, and the MPXM2102A is well matched because its CASE 1320 outline is rated to 400 kPa overpressure with operating temperature from -40C to +125C. The 40 mV native span lets designers choose a high-gain instrumentation front end to achieve the 0-5 V or 4-20 mA outputs expected by plant PLCs. On-chip temperature compensation reduces calibration overhead during volume manufacturing. Combined with a hermetic process fitting and a precision ADC, the MPXM2102A forms the core of a low-cost absolute-pressure transmitter for tank-level, vacuum-pump, and pneumatic-control applications.
Recommended
Portable Gas Flow Instrumentation
Portable gas-flow instruments such as spirometers, mass-flow controllers, and leak-test rigs commonly rely on differential or absolute pressure sensing across the 0-100 kPa range. The MPXM2102A provides a stable analog millivolt output that an AFE stage can digitize for flow calculation using Poiseuille or laminar-flow equations. Its surface-mount footprint supports compact, battery-driven devices where a tube-and-handheld form factor is essential. On-chip temperature compensation keeps the span consistent across warm-up and ambient swings, while the 400 kPa overpressure tolerance protects the die against the air hammer and back-pressure pulses present in pulsed flow systems.
Recommended
Automotive Manifold Absolute Pressure (MAP) Reference Design
Automotive MAP sensor designs use absolute pressure sensing near 100 kPa to measure engine manifold pressure, and the MPXM2102A is a development-reference part in NXP's sensor demos. Its 0-100 kPa absolute range matches the intake-manifold pressure window exactly, and the 40 mV span at 10 V excitation lets a low-cost op-amp front end produce a 0-5 V output for an MCU ADC. While not AEC-Q100 qualified, the MPXM2102A's on-chip temperature compensation and -40C to +125C rating make it well suited to under-hood development boards and aftermarket tuning kits. For production automotive MAP sensors, choose an AEC-Q100 grade such as the NXP MPXHZ6250A in the same port-package family.
Recommended
Recommended Products Summary
Engineering reference data for MPXM2102A — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXM2102AS | MPXM2102AST1 | MPX2102AP | MPX2102ASX | MPXM2102D |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 5-SMD Module (MPAK, CASE 1320) | 5-SMD Module (MPAK, CASE 1320) - same | 5-SMD Module (MPAK, CASE 1320) - same | 5-SMD Module (MPAK, CASE 1320) - same | 5-SMD Module (MPAK, CASE 1320) - same | 5-SMD Module (MPAK) - same |
| Operating Pressure Range | 0 to 100 kPa (14.5 PSI) absolute | 0 to 100 kPa (14.5 PSI) absolute | 0 to 100 kPa (14.5 PSI) absolute | 0 to 100 kPa (14.5 PSI) absolute | 0 to 100 kPa (14.5 PSI) absolute | 0 to 100 kPa (14.5 PSI) absolute |
| Maximum Overpressure | 400 kPa (58.02 PSI) | 400 kPa (58.02 PSI) | 400 kPa (58.02 PSI) | 400 kPa (58.02 PSI) | 400 kPa (58.02 PSI) | 400 kPa (58.02 PSI) |
| Output Type | Analog Wheatstone Bridge (0-40 mV at 10 V) | Analog Wheatstone Bridge (0-40 mV at 10 V) | Analog Wheatstone Bridge (0-40 mV at 10 V) | Analog Wheatstone Bridge (0-40 mV at 10 V) | Analog Wheatstone Bridge (0-40 mV at 10 V) | Analog Wheatstone Bridge (0-40 mV at 10 V) |
| Supply Voltage | 10 V DC nominal | 10 V DC nominal | 10 V DC nominal | 10 V DC nominal | 10 V DC nominal | 10 V DC nominal |
| Pressure Port | No Port | Side Port | Side Port | Axial Port | Axial Port | Dual Port |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
Key Differentiators
- On-chip temperature compensation across -40C to +125C (vs MPX2102GP)
- 5-MPAK surface-mount case 1320 outline (vs MPX2102AP)
- Linear 40 mV span at 10 V excitation with 1 kOhm bridge impedance (vs MPX5500DP)
Design Notes
Place an instrumentation amplifier within 20 mm of the MPXM2102A output pins to convert the 0-40 mV differential bridge signal to a ground-referenced 0-5 V signal. Use a low-noise amplifier such as the INA126 or AD620 with gain set to 100 (producing 4 V full-scale) to maximize dynamic range for a 10-bit ADC. Twist the bridge-output traces as a differential pair on the PCB to reject common-mode pickup from switching regulators and 60 Hz mains hum.
The MPXM2102A is calibrated at a 10 V nominal bridge excitation; lowering the supply below 8 V proportionally reduces the 40 mV span. Use a low-noise, low-drift 10 V reference (such as the REF01 or ADR01) and buffer it with a low-impedance op-amp if the excitation needs to drive multiple sensors or survive transients on the rail. Decouple the supply pin with a 0.1 uF ceramic in parallel with a 10 uF tantalum or electrolytic to suppress switching noise from upstream DC-DC converters.
Avoid hand-soldering the MPXM2102A for production-grade rework - the gull-wing leads on the 5-MPAK package can be damaged by repeated thermal cycling above 260C. Use a standard lead-free SAC305 reflow profile (peak 245C, 60-90 s above 217C per JEDEC J-STD-020). Do not exceed the 400 kPa (58.02 PSI) maximum overpressure, which can permanently deform the diaphragm and shift the offset. The lid pin (pin 5) is normally NC - do not tie it to GND or to excitation, as it is reserved for manufacturing test only.
Place the MPXM2102A on the board edge away from heat sources such as power resistors and switching converters to minimize thermal gradient across the package. Provide a keep-out zone of at least 2 mm around the sensor body to allow airflow and reduce the influence of nearby hot components. Use a single star-ground connection near the sensor module so analog return currents from the bridge excitation and amplifier share one point, avoiding ground-loop offset shifts.
Compliance Information
Lead-free gull-wing termination. Standard (non-automotive) grade; for AEC-Q100 qualified MAP sensor, choose MPXHZ6250A or similar NXP automotive sensors.
