MPX4100API - 20-105kPa Absolute Pressure Sensor | NXP
N.º de pieza: MPX4100API ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $13.05 | $130,50 |
| 100 | $11.6 | $1.160,00 |
| 500 | $10.15 | $5.075,00 |
| 1.000 | $8.7 | $8.700,00 |
MPX4100API Descripción general
What is a MAP sensor? A Manifold Absolute Pressure sensor is a piezoresistive silicon device that measures the absolute pressure inside an engine's intake manifold. The measurement lets the engine control unit (ECU) compute air mass and therefore the fuel quantity required per cylinder, which is why MAP sensors sit at the heart of every speed-density engine management strategy. MAP sensors belong to the wider class of absolute pressure sensors and pressure transducers used throughout automotive, industrial, and HVAC systems.
Key features of the MPX4100API include a maximum pressure rating of 400 kPa (proof pressure), 54 mV/kPa typical sensitivity, ±1.5 %V_FSS typical accuracy, and 5.0 V typical supply voltage. The device operates from -40 °C to +125 °C, uses a precision Wheatstone bridge with thin-film on-chip trimming, and is AEC-Q100 qualified for under-hood automotive deployment. The integrated design replaces several discrete parts (sensor + op-amp + reference + temp-comp network), reducing BOM cost and PCB footprint.
The architecture relies on a single-crystal silicon diaphragm with diffused piezoresistors arranged in a Wheatstone bridge. Laser-trimmed resistors cancel offset and span at 25 °C, while the on-board ASIC applies second-order compensation across the full -40 °C to +125 °C automotive range. The output is a ratiometric analog voltage that swings roughly from 0.3 V at 20 kPa up to 4.9 V at 105 kPa.
Typical applications include automotive engine control (MAP sensing for fuel injection), industrial pressure monitoring, HVAC systems, altimeter/barometer instrumentation, and pneumatic control systems. Because it is factory-calibrated and laser-trimmed, the MPX4100API is well suited for production designs where per-unit calibration is impractical.
When designing with the MPX4100API, route the analog output through an anti-alias RC filter before the ECU ADC to suppress RF noise from the ignition system. The sensor's case must be sealed to the manifold using an O-ring and a port that does not expose the gel-coated die to direct airflow; mounting orientation matters because the gel is gravity-sensitive.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not collected in the manufacturer datasheet alone.
Alternativas directas para MPX4100API — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MPX4100API (mismo factor de forma y huella) — difiere en Mounting Type, Output Type, Sensitivity, Accuracy, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MPX4100AP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MPX4100AP1
✅ Sustitución directa✓ En stock
$9.1 / unidad
Ver hoja de datos →MPX4100A
✅ Sustitución directa✓ En stock
$10.85 / unidad
Ver hoja de datos →MPX4100API Valores máximos y características eléctricas
| Tipo de sensor | Absolute Pressure (MAP) |
| Pressure Range | 20 kPa to 105 kPa (2.9 PSI to 15.23 PSI) |
| Maximum Overload Pressure | 400 kPa |
| Tensión de salida | 0.3 V to 4.9 V |
| Tensión de alimentación | 5.0 V typical (4.85 V to 5.35 V) |
| Sensitivity | 54 mV/kPa typical |
| Accuracy | ±1.5 %V_FSS typical |
| Temperatura de funcionamiento | -40 °C to +125 °C |
| Encapsulado | 6-SIP Module (Case 867A) |
| Tipo de montaje | Through-Hole (Manifold Mount) |
| Tipo de salida | Analog, Ratiometric |
| Signal Conditioning | On-Chip, Temperature Compensated |
| Calibration | Factory Calibrated, Laser Trimmed |
| Automotive Qualification | AEC-Q100 Qualified |
| Estado RoHS | Compliant |
| Lead Free | Yes |
Configuración de pines de MPX4100API
| Pin 1 | VCC — 5 V supply input (4.85 V to 5.35 V) |
| Pin 2 | Vout_ref — Output reference / signal ground |
| Pin 3 | GND — Power ground |
| Pin 4 | Vout — Analog ratiometric pressure output (0.3 V to 4.9 V) |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | NC — Not connected (per datasheet) |
Aplicaciones típicas
MPX4100API es adecuado para 6 aplicacións: Engine Control Unit (MAP Sensing), HVAC and Refrigeration Pressure Sensing, Industrial Pneumatic Pressure Monitoring, Altimeter and Barometric Instrumentation, Medical Respiratory and CPAP Equipment, Weather Station and Environmental Monitoring.
Engine Control Unit (MAP Sensing)
The MPX4100API is purpose-built for engine control unit (ECU) MAP sensing in naturally aspirated port-injection systems. Its 20-105 kPa range directly covers the absolute pressure swing an ECU sees across idle, cruise, and wide-open throttle in a NA gasoline engine. The 0.3-4.9 V ratiometric output lines up with a 5 V A/D converter range and stays linear at 54 mV/kPa, simplifying fuel-air ratio computation via speed-density: fuel_mass = (MAP / (R_gas * IAT)) * displacement * volumetric_efficiency. AEC-Q100 qualification lets it survive under-hood temperatures from -40 °C to +125 °C, while the gel-coated die tolerates manifold condensation and oil vapor. Mounting via an O-ring sealed port keeps the on-chip ASIC free of combustion byproducts. The on-chip temperature compensation removes the need for external thermistor lookup tables, reducing firmware overhead.
Recomendado
HVAC and Refrigeration Pressure Sensing
The MPX4100API suits HVAC system monitoring where absolute pressures in the 20-105 kPa atmospheric range need continuous tracking. Its 0.3-4.9 V output connects directly to a building automation controller or an HVAC PLC with a 5 V ADC input. The on-chip temperature compensation holds across 0 °C to 85 °C typical indoor operating range with ±1.5 %V_FSS accuracy. Refrigeration system low-side suction pressures (typically 60-85 kPa for R-134a) fall inside the sensor's mid-range, and the 54 mV/kPa sensitivity yields sufficient resolution to detect refrigerant undercharge conditions. The 6-SIP package's gel isolation also tolerates humid return-air streams. Designers should add a small RC filter on the output to suppress compressor switching noise.
Recomendado
Industrial Pneumatic Pressure Monitoring
The MPX4100API monitors compressed air lines at pressures between 20 and 105 kPa in industrial pneumatic systems, factory automation, and process control. Its 5 V ratiometric output feeds a 4-20 mA loop converter or a panel meter, and the AEC-Q100 qualification ensures reliable operation in factory-floor thermal and EMI environments. The on-chip signal conditioning and factory calibration eliminate the per-unit calibration step normally required with raw pressure transducers, cutting production test cost. The 6-SIP package mounts in a standard manifold port fitting with an O-ring seal, allowing easy field replacement. The 400 kPa proof pressure gives a 4x safety factor over the 105 kPa top range, tolerating transient water-hammer spikes in air-line service.
Recomendado
Altimeter and Barometric Instrumentation
The MPX4100API fits portable altimeter and barometric weather-station designs. Atmospheric pressure at sea level is approximately 101.325 kPa, falling to about 25 kPa at the 8000 m altitude ceiling of the sensor's range, so a single MPX4100API covers the full operational envelope of consumer and industrial barometric instruments. The 54 mV/kPa sensitivity, paired with a 12-bit ADC at 5 V reference, yields resolution near 0.05 kPa or roughly 4 meters of altitude. The on-chip temperature compensation removes the need for a separate ambient temperature sensor for altitude computation, and the 6 mA supply current keeps battery-powered weather stations within tight operating budgets. Designers should average multiple samples to suppress wind-driven pressure fluctuations.
Recomendado
Medical Respiratory and CPAP Equipment
The MPX4100API can be applied in CPAP and bi-level respiratory pressure monitoring where absolute pressures in the 20-105 kPa atmospheric range need real-time tracking. Its ±1.5 %V_FSS typical accuracy after on-chip temperature compensation is sufficient for therapy pressure verification, and the ratiometric 0.3-4.9 V signal feeds directly into a motor-control MCU A/D channel. AEC-Q100 qualification, combined with NXP's ISO/TS 16949 quality system, supports medical-grade designs requiring traceable component history. The 6-SIP manifold port integrates with standard pneumatic fittings in the patient circuit, and the gel-coated die tolerates humidified breathing gases. Add an isolation barrier per IEC 60601 if patient contact is possible, and average the output to suppress patient-cough pressure spikes.
Recomendado
Weather Station and Environmental Monitoring
The MPX4100API is suited to remote weather stations and environmental monitoring nodes measuring barometric pressure trends. Its 20-105 kPa range covers typical meteorological variation including high-pressure and storm conditions, and the 0.3-4.9 V ratiometric output integrates with low-power MCUs that share the same 5 V rail. The 6 mA supply current is acceptable for solar-powered weather stations with battery backup. The -40 °C to +125 °C operating range tolerates outdoor enclosure thermal swings, and the on-chip temperature compensation removes cold-weather drift without external lookup. The 6-SIP case 867A manifold nozzle accepts a sealed weather-proof housing inlet. Add a Gore-Tex vent to the inlet to prevent humidity-driven errors in long-term deployments.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MPX4100API — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MPX4100AP | MPX4100AP1 | MPX4100A |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 6-SIP (Case 867A) | 6-SIP (Case 867A) - same | 6-SIP (Case 867A) - same | 6-SIP (Case 867A) - same |
| Pressure Range | 20 kPa to 105 kPa | 20 kPa to 105 kPa | 20 kPa to 105 kPa | 20 kPa to 105 kPa |
| Output Voltage | 0.3 V to 4.9 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V |
| Supply Voltage | 5.0 V typical | 5.0 V typical | 5.0 V typical | 5.0 V typical |
| Sensitivity | 54 mV/kPa | 54 mV/kPa | 54 mV/kPa | 54 mV/kPa |
| Manifold Port Nozzle | Yes | Yes | Yes | No (basic SIP body) |
| Automotive Grade | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Diferenciadores clave
- Manifold-port nozzle integrated in the package (frente a MPX4100A)
- Same-family pin compatibility with broader MPX4100 family (frente a MPXA4100A6T1)
- On-chip temperature compensation and factory calibration (frente a MPX5100API)
Notas de diseño
Route the MPX4100API output through an anti-alias RC filter (typical 1 kΩ + 100 nF) before the ADC input to suppress ignition and motor-drive RF noise common in automotive environments. Place the filter within 10 mm of the sensor output pin to maximize noise rejection. Add a 100 nF ceramic bypass capacitor directly between VCC (pin 1) and GND (pin 3) of the sensor, with short traces to minimize supply-induced noise on the ratiometric output. Use a star-ground topology tying the sensor GND to the ADC reference ground to avoid ground loops.
The MPX4100API uses an O-ring sealed manifold port that mates with the intake manifold via a barbed or push-on fitting. The gel-coated silicon die is gravity-sensitive, so the sensor must be mounted with the port oriented vertically downward or as specified by NXP application note AN1668 to prevent gel migration that would degrade accuracy over the device lifetime. Do not expose the gel to direct airflow, oil, or fuel - the manifold cavity protects the die. Use a fluorosilicone O-ring rated for -40 °C to +150 °C to ensure sealing across the operating range.
Do not confuse the MPX4100API (Manifold Absolute Pressure, Case 867A SIP with nozzle) with the MPX4100A (basic SIP body without nozzle) or the MPXA4100A6T1 (8-pin SMT package). Only the MPX4100API and MPX4100AP share the same 6-SIP Case 867A manifold-port package and are drop-in compatible. The MPXA4100A6T1 has a different PCB footprint and cannot be substituted on the same board. Verify the manifold port orientation against the datasheet mechanical drawing before PCB layout, because inverted mounting will produce sign-reversed output.
Información de cumplimiento
AEC-Q100 qualified by NXP for automotive under-hood applications. RoHS compliant per NXP product page. Lead-free reflow compatible.
