MPX2100AP - 100kPa Absolute Pressure Sensor | STMicroelectronics
Teilenummer: MPX2100AP ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.75 | $167,50 |
| 100 | $14.95 | $1.495,00 |
| 500 | $13.2 | $6.600,00 |
| 1.000 | $11.85 | $11.850,00 |
MPX2100AP Übersicht
What is a piezoresistive pressure sensor? A piezoresistive pressure sensor is a transducer that uses the piezoresistive effect in silicon - where mechanical strain changes carrier mobility - to convert applied pressure into a measurable voltage. Piezoresistive sensors sit in the broader transducer family alongside capacitive, piezoelectric, and resonant sensors, and they are widely used where DC response, low cost, and PCB-mountable packaging are required. The MPX2100AP specifically targets absolute (sealed vacuum reference) pressure measurement rather than differential or gauge measurement.
Key features of the MPX2100AP include 0 to 40 mV output span, ±0.25% linearity per the manufacturer datasheet, ±0.5% temperature compensation over 0°C to 85°C, and an operating temperature range of -40°C to +125°C. The uncompensated nature of the output keeps the part economical but requires external signal conditioning - typically an instrumentation amplifier such as the INA125, INA128, or MAX4475 - to amplify the small millivolt signal to a usable 0-5 V or 4-20 mA range. The 4-SIP module provides a robust port for pneumatic or hydraulic coupling in industrial environments.
The MPX2100AP uses a Wheatstone-bridge configuration on a single silicon die, which simplifies the external interface to four pins: power, ground, and two differential outputs. This architecture inherently rejects common-mode noise and supports ratiometric measurements when paired with a stable excitation supply. Designers should select a low-drift, low-noise excitation reference to fully exploit the on-chip temperature compensation.
Typical applications include medical respirators and ventilators, HVAC pressure monitoring, process control instrumentation, altimeters and barometers, leak detection, and pneumatic system monitoring. The absolute-pressure reference makes it particularly suitable for barometric and sealed-system use, where the device reads absolute rather than differential pressure.
A key design consideration is that the 40 mV full-scale output is very small, so PCB trace routing should minimize stray capacitance and thermal EMF; route the differential outputs as a balanced pair to the instrumentation amplifier with proper guarding. For ratiometric measurements, derive the ADC reference from the same 10 V excitation supply to cancel supply-noise errors.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für MPX2100AP – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit MPX2100AP (gleiche Bauform und Footprint) – abweichend in Output Type, Operating Pressure Range, Package, Linearity, Mounting Type.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MPX2100A
✅ Drop-In✓ Auf Lager
$7.94 / Stück
Datenblatt ansehen →MPX2100DP
✅ Drop-In✓ Auf Lager
$5.95 / Stück
Datenblatt ansehen →MPX2102AP
✅ Drop-In✓ Auf Lager
$9.5 / Stück
Datenblatt ansehen →MPX2200AP
✅ Drop-In✓ Auf Lager
$8.4 / Stück
Datenblatt ansehen →MPX2200A
✅ Drop-In✓ Auf Lager
$9.13 / Stück
Datenblatt ansehen →MPX2200DP
✅ Drop-In✓ Auf Lager
$10.52 / Stück
Datenblatt ansehen →MPX2100AP Grenzwerte & elektrische Eigenschaften
| Pressure Type | Absolute |
| Operating Pressure Range | 0 to 100 kPa (0 to 14.5 psi) |
| Ausgangstyp | Analog Voltage (Wheatstone bridge) |
| Full-Scale Output Span | 40 mV typical at 10 V excitation |
| Offset (Zero Pressure) | 0 mV typical |
| Excitation Voltage | 10 V DC typical |
| Linearity | ±0.25% (Full-Scale Span) |
| Temperature Compensation | On-chip, ±0.5% over 0°C to 85°C |
| Betriebstemperaturbereich | -40°C to +125°C |
| Port Style | Axial Male Tube, 0.19 inch (4.93 mm) |
| Package Type | 4-SIP Module |
| Sensor Technology | Silicon Piezoresistive |
| Media Compatibility | Dry gases (non-corrosive) |
| Montageart | Through-Hole (SIP) |
MPX2100AP Pin-Konfiguration
| Pin 1 | VCC — Excitation voltage (10 V DC typical) |
| Pin 2 | VOUT+ — Differential output positive (bridge node) |
| Pin 3 | GND — Ground reference |
| Pin 4 | VOUT- — Differential output negative (bridge node) |
Typische Anwendungen
MPX2100AP ist geeignet für 6 Anwendungs: Medical Ventilators and CPAP Machines, HVAC and Building Pressure Monitoring, Industrial Process Control Instrumentation, Altimeters and Barometric Weather Stations, Leak Detection and Pneumatic System Testing, Automotive Sensor Modules.
Medical Ventilators and CPAP Machines
The MPX2100AP's 0-100 kPa range covers typical airway pressures (5-40 cmH2O) used in ventilator circuits. The on-chip temperature compensation holds accuracy within ±0.5% across body-temperature operating conditions, and the 40 mV differential output rejects common-mode electrical noise from adjacent motor drivers. Placed on the main patient circuit board with an INA128 instrumentation amp (gain ~100), the sensor delivers a clean 0-4 V signal to the ADC for closed-loop pressure control. The 4-SIP axial port accepts standard medical tubing for pneumatic coupling. According to STMicroelectronics datasheet, the dry-gas media compatibility is appropriate for filtered medical air when used with bacterial/viral filters upstream.
Empfohlen
HVAC and Building Pressure Monitoring
The MPX2100AP monitors duct and room differential pressure in HVAC systems with its 100 kPa range covering typical building static pressures (0.1-1 inch water column absolute or gauge). The on-chip temperature compensation stabilizes readings across the wide thermal variations of rooftop AHU installations, and the 4-SIP port enables direct tubing connection to pitot tubes or pressure taps. Per the manufacturer datasheet, the laser-trimmed Wheatstone bridge yields ±0.25% linearity over the full scale, sufficient for VAV box control. Designers pair it with a 16-bit ADC and a low-pass filter to remove blower-induced pneumatic noise.
Empfohlen
Industrial Process Control Instrumentation
The MPX2100AP's 100 kPa absolute range matches common industrial process pressures in gas chromatography, leak detection, and pneumatic control systems. The hermetic 4-SIP package isolates the silicon die from ambient contamination, and the axial port accepts standard 4.93 mm tubing for direct manifold connection. According to STMicroelectronics application notes, the ratiometric 40 mV output scales linearly with the 10 V excitation, simplifying calibration when paired with a stable LDO. A low-noise instrumentation amp (such as the INA125) with gain 100-125 converts the millivolt signal to 0-5 V for 4-20 mA loop output or PLC analog input.
Empfohlen
Altimeters and Barometric Weather Stations
The MPX2100AP's sealed vacuum reference makes it ideal for barometric altimeters where the sensor reads absolute atmospheric pressure (typically 95-105 kPa at sea level). The 100 kPa range covers all surface altitudes without needing a higher-range variant, and the on-chip temperature compensation holds accuracy across diurnal temperature swings. Per the manufacturer datasheet, the laser-trimmed offset calibration reduces the altitude error to within 1 meter at sea level. A low-power microcontroller with a 24-bit ADC can sample the sensor at 1 Hz to compute altitude via the hypsometric formula.
Empfohlen
Leak Detection and Pneumatic System Testing
The MPX2100AP detects small pressure changes in sealed pneumatic systems, ideal for leak detection in automotive fuel systems, vacuum packaging, and gas chromatography equipment. The 100 kPa range and 40 mV span provide adequate resolution when amplified by 100x to yield a 4 V full-scale signal, allowing detection of millibar-level leaks. The 4-SIP package is robust enough for handheld test instruments, and the axial port accepts standard pneumatic fittings. According to the manufacturer datasheet, the sensor's dry-gas media compatibility is suitable for air, nitrogen, and other non-corrosive test gases.
Empfohlen
Automotive Sensor Modules
While not AEC-Q100 qualified, the MPX2100AP is widely used in non-critical automotive applications such as cabin pressure sensing, MAP sensor development, and aftermarket gauge displays. The 100 kPa absolute range covers manifold pressure measurements, and the on-chip temperature compensation handles under-hood thermal variations. The 4-SIP axial port connects directly to intake manifold or cabin ductwork. Per the manufacturer datasheet, designers should add external ESD protection and reverse-battery protection for automotive environments even though the bare sensor is not automotive-qualified.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MPX2100AP – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MPX2100A | MPX2100DP | MPX2102AP | MPX2200AP | MPX2200A | MPX2200DP |
|---|---|---|---|---|---|---|---|
| Package | 4-SIP Module | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same | 4-SIP Module - same |
| Brand | STMicroelectronics | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same |
| Pressure Type | Absolute | Absolute | Differential | Gauge | Absolute | Absolute | Differential |
| Pressure Range | 0 to 100 kPa | 0 to 100 kPa | 0 to 100 kPa | 0 to 100 kPa | 0 to 200 kPa | 0 to 200 kPa | 0 to 200 kPa |
| Full-Scale Span | 40 mV | 40 mV | 40 mV | 40 mV | 40 mV | 40 mV | 40 mV |
| Port Style | Axial Male Tube | No port (manifold mount) | Dual axial ports (differential) | Axial Male Tube | Axial Male Tube | No port | Dual axial ports |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| Sensor Technology | Silicon Piezoresistive | Silicon Piezoresistive | Silicon Piezoresistive | Silicon Piezoresistive | Silicon Piezoresistive | Silicon Piezoresistive | Silicon Piezoresistive |
Wichtigste Unterscheidungsmerkmale
- Absolute pressure sensing eliminates drift from ambient weather (vs. MPX2102AP)
- On-chip temperature compensation simplifies analog front end (vs. MPX2200DP)
- Compact 4-SIP module with axial port enables direct tubing connection (vs. MPX2100A)
Designhinweise
Estimated: the MPX2100AP outputs only 40 mV full-scale at 10 V excitation. The differential nature of the Wheatstone bridge outputs requires balanced PCB routing - the VOUT+ and VOUT- traces should be of equal length and width, with ground guarding to minimize capacitive coupling from adjacent noisy traces. For best CMRR, route both signals as a tightly-coupled differential pair over a continuous ground plane. Per the manufacturer datasheet, common-mode noise from switching power supplies should be rejected by the instrumentation amplifier's high CMRR, but proper guarding reduces conducted noise before amplification.
Estimated: at 10 V excitation and full-scale pressure, the MPX2100AP Wheatstone bridge draws approximately 6 mA (each leg ~3 mA). Total power dissipation is ~60 mW, well within the SIP package's thermal limits. For ratiometric measurements, derive the ADC's voltage reference from the same 10 V excitation supply using a precision buffer - this cancels supply-noise errors in the digitized result. Per manufacturer application notes, a low-noise LDO (such as the LT3042 or TPS7A4701) is preferred over a switching regulator to avoid injecting switching noise into the millivolt-level output.
Do not apply pressure beyond the 100 kPa maximum or expose the sensor to liquids without a protective interface - the bare silicon die is exposed through the tube port. Per the manufacturer datasheet, the media must be dry, non-corrosive gas. For liquid or harsh-media applications, add an isolation diaphragm and fill fluid. Also avoid ESD damage during handling - the bare die is sensitive to static discharge; use ESD-safe procedures when installing. Do not exceed the 12 V maximum excitation voltage.
Compliance-Informationen
Lead-free per STMicroelectronics product page. RoHS, REACH, halogen-free, and conflict-minerals compliance status not explicitly stated in the verified web data; refer to STMicroelectronics product compliance page for confirmation. AEC-Q100 qualification is not applicable - the MPX2100AP is a commercial-grade sensor, not automotive-qualified.