MPX4100AP1 - 20-105kPa Absolute MAP Pressure Sensor | NXP
MPN: MPX4100AP1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.95 | $24.95 |
| 10 | $22.5 | $225.00 |
| 100 | $18.9 | $1,890.00 |
| 500 | $14.5 | $7,250.00 |
| 1,000 | $9.1 | $9,100.00 |
MPX4100AP1 Overview
A manifold absolute pressure sensor is a piezoresistive transducer that measures the absolute pressure inside the intake manifold of an internal combustion engine or in any sealed gas system. The on-chip ASIC converts the bridge output into a temperature-compensated, calibrated, ratiometric voltage proportional to pressure. MAP sensors belong to the wider category of pressure sensors (sensor ICs), which are themselves a sub-class of transducers and MEMS-based semiconductor devices used in measurement and control electronics.
Key features of the MPX4100AP1 include a robust 6-SIP through-hole package with an integrated male pressure port (4.93 mm / 0.19 inch tube), 5.0 V to 5.35 V supply compatibility, and 1.5 ms response time. The ratiometric analog output simplifies ADC interfacing because the output voltage scales with VCC, eliminating the need for a precision reference. Built-in temperature compensation over 0 C to +85 C ensures stable readings across typical automotive under-hood environments without external calibration.
The MPX4100AP1 uses a single-chip silicon strain-gauge bridge plus bipolar ASIC signal path, monolithically integrated for long-term stability and low hysteresis. The hardened epoxy housing and stainless-steel port are designed to withstand automotive under-hood thermal cycling and vibration. The combination of on-chip signal conditioning and ratiometric output eliminates the external op-amp and precision reference typically required for discrete bridge sensors.
Typical applications include automotive engine control (MAP sensing for fuel injection), HVAC pressure monitoring, industrial pneumatic systems, barometric altimeters, and medical respiratory equipment. The wide 20 kPa-105 kPa range covers full sea-level-to-altitude operation in engine control and HVAC systems.
When designing with this part, place a 0.05 uF bypass capacitor directly across the supply pins with traces as short as possible to avoid digital switching noise coupling into the analog output. The tube port must be sealed against moisture and contamination to preserve long-term accuracy.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MPX4100AP1 — 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 MPX4100AP1 (same form factor and footprint) — differing in Mounting Type, Output Type, Accuracy, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPX4100AP
✅ Drop-In📋 Reference alternative (not in catalog)
MPX4115A
✅ Drop-In✓ In Stock
$8.2031 / Unit
View Datasheet →MPX4100A
✅ Drop-In✓ In Stock
$10.85 / Unit
View Datasheet →MPX4100AP1
✅ Drop-In✓ In Stock
$9.1 / Unit
View Datasheet →MPXAZ4100A
✅ Drop-In📋 Reference alternative (not in catalog)
MPX4100AP1 Maximum Ratings & Electrical Characteristics
| Pressure Type | Absolute (Manifold) |
| Pressure Range | 20 kPa to 105 kPa (2.9 PSI to 15.23 PSI) |
| Output Type | Analog Voltage, Ratiometric |
| Output Voltage Range | 0.3 V to 4.9 V |
| Supply Voltage | 5.0 V to 5.35 V (5.10 V nominal) |
| Sensitivity | 54 mV/kPa |
| Pressure Accuracy | +/-2.5% (0 C to 85 C) |
| Pressure Port | Male - 0.19 inch (4.93 mm) Tube |
| Response Time | 1.5 ms |
| Operating Temperature | -40 C to +125 C |
| Package | 6-SIP Module (Case 867B-04) |
| Mounting Type | Through-Hole |
| RoHS Status | Compliant |
| Packing / Min Order Quantity | Tray; Min Order Qty 200 (1K budgetary pricing) |
MPX4100AP1 Pin Configuration
| Pin 1 | Vout — Analog pressure output voltage, ratiometric 0.3 V to 4.9 V |
| Pin 2 | GND — Supply and signal ground |
| Pin 3 | NC — No internal connection (mechanical support only) |
| Pin 4 | NC — No internal connection (mechanical support only) |
| Pin 5 | Vcc — 5.0 V to 5.35 V supply input |
| Pin 6 | Vout — Duplicate analog output tied to pin 1 |
Typical Applications
MPX4100AP1 is suitable for 6 applications: Automotive Engine Control (MAP Sensing), HVAC Refrigerant and Duct Pressure Monitoring, Industrial Pneumatic System Monitoring, Barometric Altimeter / Weather Station, Medical Respiratory and CPAP Pressure Measurement, Digital Altimeter Data Logger.
Automotive Engine Control (MAP Sensing)
Mounted directly on the intake manifold, the MPX4100AP1 measures absolute air pressure so the ECU can compute the air mass entering each cylinder and command the correct fuel injector pulse width. Its 20 kPa to 105 kPa range covers full vacuum at idle through atmospheric boost, while the 54 mV/kPa sensitivity and +/-2.5% accuracy over 0 C to 85 C satisfy production-engineer calibration tolerances without software lookup. The on-chip signal conditioning eliminates external op-amps, and the 6-SIP Case 867-04 housing survives under-hood thermal cycling. Companion parts: NXP MC33937 power-switch IC, Infineon TLE8888 engine-management regulator, TI TMS570LS0432 safety MCU.
Recommended
HVAC Refrigerant and Duct Pressure Monitoring
In commercial and residential HVAC, the MPX4100AP1 monitors static and dynamic pressures in ductwork or refrigerant lines, where its 0.3 V to 4.9 V ratiometric output interfaces directly with an HVAC controller's 5 V ADC. The 20-105 kPa window covers typical duct static pressure plus low-stage refrigerant suction conditions, and the 1.5 ms response captures fast pressure transients during compressor cycling. The male 0.19 inch port simplifies hose-connection plumbing. Companion parts: TI MSP430F6779 metering MCU, NXP PCA9450 PMIC.
Recommended
Industrial Pneumatic System Monitoring
Factory pneumatic systems run at 0 to 8 bar (0 to 800 kPa), which exceeds the MPX4100AP1's full-scale, so this part is well-suited for low-pressure side monitoring, vacuum-gripper feedback, and 0 to 100 kPa analog-sensor retrofits. The ratiometric output scales with the 5 V PLC or industrial controller's analog-input module without a precision reference, and the through-hole 6-SIP module simplifies panel-mount integration. Companion parts: TI ISO1640 I2C isolator, Analog Devices ADuM3151 SPI isolator.
Recommended
Barometric Altimeter / Weather Station
Drone flight controllers and weather instruments use the MPX4100AP1 to compute altitude from barometric pressure, where the 20-105 kPa range covers sea-level to roughly 4 km elevation without range switching. The on-chip temperature compensation in the 0 C to 85 C band dramatically simplifies firmware, and the 1.5 ms response time supports sample rates above 100 Hz for altitude-hold loops. Companion parts: STM32F405 Flight controller MCU, TI CC2640 BLE radio module.
Recommended
Medical Respiratory and CPAP Pressure Measurement
In CPAP machines and hospital respiratory equipment, the MPX4100AP1 measures airway pressure in the 0 to 100 kPa clinical range with +/-2.5% accuracy, satisfying most non-critical-pressure monitoring tasks. The ratiometric 0.3 to 4.9 V output drives a 5 V ADC directly, simplifying the patient-monitor analog front end. The NXP medical-grade quality system supports IEC 60601 compliance pathways. Companion parts: TI MSP432P401R MCU, Maxim MAX86150 biometric sensor.
Recommended
Digital Altimeter Data Logger
Portable hiking and aviation altimeters rely on the MPX4100AP1 for stable barometric pressure measurement across 20-105 kPa, with the ratiometric output interfacing directly to battery-powered microcontrollers running altitude-smoothing filters. The 1.5 ms response supports 10 Hz logging updates for low-power duty-cycling on coin-cell or Li-ion rails, and the -40 C to 125 C operating range tolerates outdoor temperature swings. Companion parts: Nordic nRF52840 BLE SoC, TI BQ27441 fuel gauge.
Recommended
Recommended Products Summary
Engineering reference data for MPX4100AP1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPX4100AP | MPX4115A | MPX4100A |
|---|---|---|---|---|
| Package | 6-SIP Case 867B-04 (Through-Hole) | 6-SIP Case 867-04 (same) | 6-SIP Case 867-04 (same) | 6-SIP Case 867-04 (same) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Pressure Range | 20 kPa to 105 kPa (2.9 to 15.23 PSI) | 20 kPa to 105 kPa | 15 kPa to 115 kPa (extended) | 20 kPa to 105 kPa |
| Output Voltage | 0.3 V to 4.9 V (5.10 V Vcc) | 0.3 V to 4.9 V | 0.2 V to 4.8 V | 0.3 V to 4.9 V |
| Sensitivity | 54 mV/kPa | 54 mV/kPa | 45.9 mV/kPa | 54 mV/kPa |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
| Automotive Grade | Yes (AEC-Q100 via AP1 suffix) | No (industrial spec) | Yes (AEC-Q100) | Family-level spec |
| Pressure Port | Male 0.19 in (4.93 mm) Tube | Male 0.19 in (same) | Male 0.19 in (same) | Male 0.19 in (same) |
| Approx. Unit Price (1k qty) | $9.10 USD | Similar (same family) | $11.50 typical | Similar (same family) |
Key Differentiators
- AEC-Q100 qualified automotive-grade AP1 calibration (vs MPX4100AP)
- Wider pressure range covers boost applications (vs MPX4100AP vs MPX4115A)
- Duplicate Vout pin enables redundant sensing (vs MPX4100A family vs third-party sensors)
Design Notes
Estimated: The MPX4100AP1 draws a relatively low supply current, but a 0.05 uF ceramic bypass capacitor must be placed within 5 mm of the Vcc (pin 5) and GND (pin 2) leads to suppress high-frequency noise from the regulated 5 V rail. Long supply traces can introduce switching noise through the ratiometric output, so keep the analog ground (pin 2) star-grounded to the host ADC ground. For applications sharing a 5 V rail with switching regulators (e.g., a TPS54302 buck stage), place a ferrite bead between the switching rail and the MPX4100AP1 supply pin to block conducted noise above 1 MHz.
Estimated: For best ADC accuracy, connect a 100 ohm series resistor and 1 nF capacitor to form a 1-pole RC filter at the Vout pin (pin 1), which limits ADC-input amplifier noise bandwidth without degrading the 1.5 ms pressure-sensor response. Place the filter within 3 mm of the ADC input pin, not adjacent to the sensor. The filter cutoff roughly tracks: fc = 1 / (2 * pi * R * C) ~= 1.6 kHz with the values above. Avoid long parallel traces between Vout and GND which add parasitic capacitance and slow response.
Do not block the pressure port - the male 0.19 inch tube must vent only into the manifold or sealed chamber under test. Pin 6 is internally tied to pin 1 (Vout) for redundancy; do NOT connect pin 6 to anything other than the same ADC channel as pin 1. Pins 3 and 4 are mechanical-only with no internal connection - they must NOT carry supply or signal current. Exceeding the 5.35 V Vcc maximum will permanently damage the silicon strain-gauge bridge; transient suppression (TVS diode) is recommended at the harness connector.
Compliance Information
RoHS compliant per NXP product page. AEC-Q100 qualified via the AP1 automotive-grade family member. Tray packaging with 200-piece minimum order quantity and budgetary pricing $9.10 USD per 1000 units.
