MPX4080D - 0 to 80 kPa Differential Pressure Sensor | NXP / ST
MPN: MPX4080D ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.45 | $64.50 |
| 100 | $5.62 | $562.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.4 | $4,400.00 |
MPX4080D Overview
A pressure sensor is a transducer that converts an applied mechanical pressure into a proportional electrical output. Within the broader sensor hierarchy it belongs to MEMS (micro-electro-mechanical systems) devices, specifically the piezoresistive family, which uses silicon strain gauges whose resistance changes with applied stress. Integrated pressure sensors add on-chip signal conditioning, temperature compensation, and factory calibration, so the user does not have to design an instrumentation amplifier or trim resistors. The output is a ratiometric, single-ended analog voltage that can be read directly by a microcontroller ADC or a comparator, making these parts a staple in low-cost pressure measurement.
Key features of the MPX4080D include a 0 to 80 kPa differential pressure range, 5.1 V typical supply voltage, 0.6 V to 4.9 V analog output span, on-chip temperature compensation and calibration, monolithic single-element transducer design, and bipolar processing with thin-film metallization for long-term stability. The output is essentially linear with applied pressure, simplifying firmware-side conversion.
The MPX4080D combines micromachined silicon, thin-film metallization, and bipolar signal-conditioning circuitry on one die. This single-element patented architecture eliminates the mismatch errors that plague two-element bridge sensors and gives excellent offset and full-scale repeatability. The 6-SIP through-hole package exposes the backside pressure port while routing the six electrical pins through a standard PCB footprint.
Typical applications include HVAC blower and air-handling pressure monitoring, barometric correction for engine control, blood pressure and medical instrumentation, weather stations, altimeters, manifold absolute pressure sensing, and any MCU-based system that needs a calibrated analog pressure signal. The differential configuration is well suited to measuring pressure drop across a filter, orifice, or fan.
When designing with this part, ensure the media is dry air (or compatible gas/liquid per the datasheet), add a 0.01 uF decoupling capacitor close to the supply pin, and protect the port from condensing moisture. The output is ratiometric to the supply, so a stable 5.0 V reference improves absolute accuracy.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MPX4080D — 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 MPX4080D (same form factor and footprint) — differing in Mounting Type, Operating Pressure Range, Output Type, Supply Voltage, Pressure Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPX4080DP
✅ Drop-In📋 Reference alternative (not in catalog)
MPXV4080D
✅ Drop-In📋 Reference alternative (not in catalog)
MPX4080GP
✅ Drop-In📋 Reference alternative (not in catalog)
MPX4080AP
✅ Drop-In📋 Reference alternative (not in catalog)
MPX5700DP
✅ Drop-In✓ In Stock
$9.2 / Unit
View Datasheet →MPX5700AS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$11.05 / Unit
View Datasheet →MPX4080D Maximum Ratings & Electrical Characteristics
| Pressure Type | Differential |
| Operating Pressure Range | 0 kPa to 80 kPa (0 PSI to 11.6 PSI) |
| Output Voltage Span | 0.6 V to 4.9 V (typical) |
| Output Type | Analog voltage, ratiometric to Vsupply |
| Supply Voltage | 4.85 V to 5.35 V (5.1 V typical) |
| Port Configuration | Differential, single axial port on package top |
| Port Size | Female, 0.136 in (3.4544 mm) |
| Package / Case | 6-SIP Module (through-hole) |
| Termination Style | PCB (through-hole) |
| Media Compatibility | Dry air (other media require factory consultation) |
| On-Chip Signal Conditioning | Yes (amplified, temperature compensated, calibrated) |
| Technology | Piezoresistive monolithic silicon, single-element |
| Mounting Type | Through-hole |
MPX4080D Pin Configuration
| Pin 1 | Vout — Analog pressure output (0.6 V to 4.9 V, ratiometric) |
| Pin 2 | GND — Ground reference |
| Pin 3 | Vs — Supply voltage (5.1 V typical) |
| Pin 4 | NC — Not connected (mechanical) |
| Pin 5 | NC — Not connected (mechanical) |
| Pin 6 | NC — Not connected (mechanical) |
Typical Applications
MPX4080D is suitable for 7 applications: HVAC Duct Pressure Monitoring, Engine Manifold Absolute Pressure (MAP) Sensing, Barometric Pressure / Altimeter Module, Medical and Respiratory Equipment, Industrial Process Pressure Drop Monitoring, Differential Airflow and Fan Characterization, Weather Station and Environmental Monitoring.
HVAC Duct Pressure Monitoring
The MPX4080D is well suited for measuring air-handling pressure drop across HVAC filters, coils, and variable-air-volume boxes. Its 0 to 80 kPa differential range covers typical dirty-filter loading (5 to 50 kPa) without saturating, and the 0.6 V to 4.9 V analog output can be read directly by an MCU ADC without an instrumentation amplifier. Designers commonly place a low-pass RC filter (1 kohm plus 0.1 uF) on Vout to suppress blower-induced pneumatic noise, and power the sensor from a low-noise 5 V LDO such as the LP2985 to keep the ratiometric output stable.
Recommended
Engine Manifold Absolute Pressure (MAP) Sensing
Although the MPX4080D is differential, the same die family (MPX4080AP absolute variant) is widely used in automotive MAP sensing for fuel-injection control. The 0 to 80 kPa range maps to 0 to ~600 mmHg manifold depression with 4.9 V full-scale at 5 V supply, giving the ECU enough resolution for closed-loop fuel trim. Engineers typically add a manifold reference tube and a small surge restrictor to dampen pulsations, and pair the sensor with an AEC-Q100 qualified MCU such as the NXP S9S12 family.
Recommended
Barometric Pressure / Altimeter Module
The MPX4080D's on-chip temperature compensation and factory calibration make it a candidate for low-resolution weather stations and consumer altimeters where a 1-meter altitude step (about 0.12 kPa) is acceptable. The differential port can be left vented to atmosphere on one side for gauge-mode barometric use by selecting the MPX4080GP variant. The 0.6 V to 4.9 V analog span maps to roughly 10-bit ADC codes per kPa, sufficient for hobby-grade altimeters when paired with an MSP430 or PIC MCU.
Recommended
Medical and Respiratory Equipment
In CPAP machines, spirometers, and ventilator pressure circuits, the MPX4080D provides a low-cost differential pressure readout across flow-restriction elements. Its 0 to 80 kPa span covers typical inspiratory and expiratory pressures (0 to 30 cmH2O is well within range), and the small 6-SIP module is easy to integrate into compact handheld designs. Designers must isolate the sensor from exhaled humidity with a hydrophobic membrane and follow IEC 60601-1 isolation requirements for patient-applied circuits.
Recommended
Industrial Process Pressure Drop Monitoring
Factory automation systems use the MPX4080D to detect clogged inlet filters on pneumatic equipment and to monitor vacuum lines in pick-and-place machines. Its through-hole 6-SIP module survives the vibration environment of factory floors and the wide operating temperature range typical of industrial enclosures. A 4 mA to 20 mA current-loop transmitter built around the sensor's 0.6 V to 4.9 V output, using an XTR105 or XTR110, lets the signal travel long distances back to a PLC analog input.
Recommended
Differential Airflow and Fan Characterization
Bench-test setups and laboratory instruments use the MPX4080D to characterize fan and duct performance by measuring pressure rise versus flow. Its calibrated 0.6 V to 4.9 V span at 5 V supply allows direct plotting on a data logger, and the 5 ms typical response time is fast enough for steady-state fan curves. Designers typically pair the sensor with a PIC18 or Arduino-class MCU and add a pitot-tube probe in front of the fan inlet to convert velocity pressure into the differential pressure the MPX4080D measures.
Recommended
Weather Station and Environmental Monitoring
Low-cost weather stations use the MPX4080D as a coarse barometric pressure sensor where absolute accuracy is less critical than cost. The differential port can be configured for barometric use with the gauge variant, giving readings that track fast-changing weather systems within a few hundred Pa. Designers should shield the port from direct wind with a static-pressure head and shelter the assembly from rain to prevent water ingress that would damage the gel-protected backside port.
Recommended
Recommended Products Summary
Engineering reference data for MPX4080D — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPX4080DP | MPXV4080D | MPX4080GP | MPX4080AP | MPX5700DP |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | STMicroelectronics (second-source) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 6-SIP Module (through-hole) | 6-SIP Module (through-hole) - same | 6-SIP Module (through-hole) - same | 6-SIP Module (through-hole) - same | 6-SIP Module (through-hole) - same | 6-SIP Module (through-hole) - same |
| Pressure Type | Differential | Differential | Differential | Gauge | Absolute | Differential |
| Pressure Range | 0 to 80 kPa | 0 to 80 kPa | 0 to 80 kPa | 0 to 80 kPa (gauge) | 15 to 115 kPa (absolute) | 0 to 700 kPa |
| Output Span | 0.6 V to 4.9 V | 0.6 V to 4.9 V | 0.6 V to 4.9 V | 0.2 V to 4.9 V (approx) | 0.5 V to 4.5 V (approx) | 0.2 V to 4.7 V (approx) |
| Supply Voltage | 5.1 V typical | 5.1 V typical | 5.1 V typical | 5.1 V typical | 5.1 V typical | 5.0 V typical |
| On-Chip Calibration | Yes | Yes | Yes | Yes | Yes | Yes |
| Pinout Compatibility | Reference | Pin-compatible | Pin-compatible | Pin-compatible | Pin-compatible (port differs) | Pin-compatible |
Key Differentiators
- True differential configuration in a through-hole 6-SIP module (vs MPXV4115V)
- Lower pressure range for higher per-kPa resolution (vs MPX5700DP)
- Same 6-SIP module as the rest of the MPX4080 family (vs MPX4080AP (absolute))
Design Notes
Estimated: The MPX4080D draws a few mA from its 5.1 V supply. Add a 0.01 uF ceramic decoupling capacitor within 5 mm of the Vs pin (pin 3) and a 10 uF bulk cap at the supply rail entry point to suppress switching-regulator ripple. Because the output is ratiometric to Vs, supply noise directly appears on Vout - so power the sensor from a low-noise 5 V LDO such as the LP2985 rather than a switching converter when ADC accuracy matters.
Keep digital traces (MCU clocks, switching converters, PWM signals) at least 5 mm away from the Vout trace to avoid capacitive coupling. Route Vout as a guarded trace with GND on both sides if the board has noisy digital sections. Place the sensor away from heat sources (regulators, power resistors) because thermal gradients across the package can shift the offset. The 6-SIP module should be mounted with its port pointing vertically or horizontally away from board flex.
Do not apply more than the maximum rated pressure (overload rating) - even brief spikes can permanently shift calibration. Do not expose the port to condensing moisture or liquid water; the gel protection is for dry air only. Do not read the absolute Vout value without first measuring Vsupply, because the output is ratiometric. Do not assume the pinout is the same as the absolute (MPX4080AP) or gauge (MPX4080GP) variants - the pin assignments differ in some package options.
Add a first-order RC low-pass filter (1 kohm series resistor plus 0.1 uF capacitor to GND) at Vout to suppress high-frequency pneumatic noise from blowers and turbulence. With a 5 V ADC reference and 10-bit resolution, each LSB is about 4.3 mV, equivalent to roughly 0.1 kPa - so even small noise spikes corrupt the reading. For higher resolution, use a 12-bit or 16-bit ADC and oversample by 16x to average out residual noise.
Compliance Information
RoHS and REACH status not explicitly stated in the verified web data - set to unknown. The part is lead-free per the standard NXP automotive-grade process. AEC-Q100 qualification status not applicable for through-hole non-automotive-targeted variants in this family.