MPXV53GC7U - 50 kPa Uncompensated Vented Gauge Pressure Sensor | NXP
MPN: MPXV53GC7U ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.85 | $985.00 |
| 500 | $8.45 | $4,225.00 |
| 1,000 | $7.2 | $7,200.00 |
MPXV53GC7U Overview
A piezoresistive pressure sensor is a MEMS device in which four strain-sensitive resistors arranged in a Wheatstone bridge on a silicon diaphragm change resistance when pressure deflects the diaphragm. The bridge is excited by an external voltage (typically 3 V to 10 V) and delivers a low-level analog output that the user conditions with op-amps, instrumentation amplifiers, or dedicated ADC front-ends. In the broader hierarchy, the MPXV53GC7U sits in the transducer sub-family of sensors, which falls under MEMS sensors, semiconductor sensors, and finally signal-chain components.
Key specifications include a 0 kPa to 50 kPa operating range, 60 mV full-scale output at 3 V excitation, 1.0 mV/kPa typical sensitivity, a 1.0 kΩ to 3.0 kΩ input impedance, and a -40 °C to +125 °C operating temperature range. The package is through-hole DIP-8 (0.550" / 13.97 mm body width) with port style A (top port), and the uncompensated nature means offset, span, and nonlinearity calibration are performed by the host circuit.
The sensing element is a monolithic silicon diaphragm with an implanted piezoresistive bridge, laser-trimmed for span but deliberately left without temperature or offset compensation. This makes the device well-suited to cost-sensitive applications where the downstream MCU or analog signal chain can perform software compensation. Because the device is uncompensated, PCB designers must keep excitation and reference paths short to minimize noise pickup and thermal EMF.
Typical applications include medical respiratory monitoring (spirometers, ventilators, CPAP), HVAC variable-air-volume (VAV) controllers, altimeters and barometric correction, air-flow and draft sensing, process control gauges, and hobby/drone altitude estimation. The vented-gauge topology inherently compensates for changes in ambient barometric pressure, which simplifies outdoor installations.
When designing with this sensor, pair it with a low-noise instrumentation amplifier such as an INA125 or a 24-bit delta-sigma ADC such as the ADS1220 to digitize the millivolt-level output. Provide a clean, low-noise 3 V to 5 V excitation supply; any ripple on the excitation appears directly in the output. Avoid placing the part near heat sources because uncompensated sensors exhibit thermal drift that cannot be corrected without calibration data.
Drop-in alternatives for MPXV53GC7U — 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 MPXV53GC7U (same form factor and footprint) — differing in Mounting Type, Operating Temperature, Output Type, Output Voltage, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPXV53GP
✅ Drop-In📋 Reference alternative (not in catalog)
MPX53DP
✅ Drop-In✓ In Stock
$7.48 / Unit
View Datasheet →MPXV5050GP
✅ Drop-In✓ In Stock
$10.66 / Unit
View Datasheet →MPX5700GP
✅ Drop-In✓ In Stock
$12.03 / Unit
View Datasheet →MPXV4115VC6U
✅ Drop-In✓ In Stock
$9.95 / Unit
View Datasheet →MPXV53GC7U Maximum Ratings & Electrical Characteristics
| Sensor Type | Pressure Sensor, Vented Gauge |
| Operating Pressure Range | 0 kPa to 50 kPa (0 PSI to 7.25 PSI) |
| Pressure Port Type | Male - 0.13" (3.17 mm) Tube, Top Port |
| Reference Type | Vented Gauge |
| Output Type | Analog Voltage (Wheatstone bridge) |
| Output Voltage | 0 mV to 60 mV at 3 V excitation |
| Sensitivity (typ) | 1.0 mV/kPa at 3 V excitation |
| Excitation Voltage | 3 V typical (up to 10 V max per datasheet) |
| Input Impedance | 1.0 kΩ to 3.0 kΩ |
| Output Impedance | 1.0 kΩ to 3.0 kΩ |
| Operating Temperature | -40 °C to +125 °C |
| Package / Case | 8-DIP (0.550", 13.97 mm) through-hole, top port |
| Mounting Type | Through Hole |
| Compensation | Uncompensated (raw bridge output) |
| RoHS Status | Compliant |
MPXV53GC7U Pin Configuration
| Pin 1 | GND / Vent — Ground / side vent reference to ambient |
| Pin 2 | Vout+ — Bridge differential output positive |
| Pin 3 | Vout- — Bridge differential output negative |
| Pin 4 | Vex+ — Excitation supply positive (3 V typ) |
| Pin 5 | Vex- — Excitation supply negative / GND |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
Typical Applications
MPXV53GC7U is suitable for 6 applications: Medical Spirometer / Respiratory Monitor, HVAC Variable Air Volume (VAV) Controller, Barometric Altitude / Drone Altimeter, Industrial Process Pressure Gauge, Indoor Air Quality / Cleanroom Pressure Monitor, CPAP / Positive Airway Pressure Device.
Medical Spirometer / Respiratory Monitor
The MPXV53GC7U is well-suited to spirometer and respiratory airflow measurement because its 0-50 kPa range matches typical airway pressure excursions during forced breathing maneuvers. The 1.0 mV/kPa sensitivity and 60 mV full-scale output at 3 V excitation pair directly with a 24-bit sigma-delta ADC such as the TI ADS1220, which has an integrated PGA and excitation current source. The vented-gauge reference eliminates ambient barometric drift between clinic visits, so calibration does not need to compensate for altitude or weather. Designers should place a low-pass RC filter at the ADC input and route the 3 V excitation from a low-noise LDO to keep the bridge output free of mains ripple.
Recommended
HVAC Variable Air Volume (VAV) Controller
HVAC VAV boxes regulate duct static pressure to optimize fan energy and zone comfort, and the MPXV53GC7U's 0-50 kPa range covers the typical 0-1.5 inch water column (0-373 Pa is too low; the unit scales to higher-pressure ducts) common in commercial rooftop unit ductwork. The vented-gauge topology automatically compensates for outdoor barometric swings, simplifying outdoor rooftop installation. The through-hole 8-DIP package with top port allows the sensor to be mounted directly on a manifold without custom fixturing. Pair the sensor with a low-cost MCU such as the TI MSP430G2553 running firmware-based thermal compensation for an accurate, low-BOM duct pressure transmitter.
Recommended
Barometric Altitude / Drone Altimeter
The MPXV53GC7U functions as a low-cost altimeter for hobby drones and outdoor sensing platforms. Its vented-gauge reference is referenced to sea-level barometric pressure, so the MCU integrates the pressure reading to estimate altitude change over time. The 50 kPa ceiling provides more than enough headroom for typical drone operating altitudes (under 5 kPa above sea level). Although the device is uncompensated, a single-point ground calibration and a temperature lookup table yield 1-meter altitude resolution, which is sufficient for return-to-home and altitude-hold flight modes. Low power consumption and a small DIP-8 footprint make it suitable for SWaP-constrained designs.
Recommended
Industrial Process Pressure Gauge
The MPXV53GC7U can digitize low-pressure industrial process lines such as cleanroom differential pressure, gas flow bench testing, or pneumatic actuator feedback. Its 1.0 mV/kPa sensitivity and uncompensated bridge output allow the host instrumentation amplifier to scale the output to the precise range required by the application. The through-hole DIP package with 0.13" tube port simplifies panel-mount integration with standard pneumatic fittings. Designers should add surge protection on the port and use a differential ADC input to reject common-mode noise from nearby VFDs and motor drives.
Recommended
Indoor Air Quality / Cleanroom Pressure Monitor
Cleanrooms and isolation rooms rely on differential pressure between zones to control contamination; the MPXV53GC7U's vented-gauge topology allows one port to monitor room pressure and the other to monitor a reference vent. The 50 kPa range is more than sufficient for typical ±125 Pa room-pressure alarms. The uncompensated output can be linearized and calibrated at production test, yielding a low-cost transducer suitable for OEM volume deployment. The through-hole package is well-suited to a wall-mounted transducer PCB that is field-replaceable.
Recommended
CPAP / Positive Airway Pressure Device
CPAP machines deliver constant positive airway pressure in the 4-20 cm H2O range (0.4-2 kPa), well within the MPXV53GC7U's 50 kPa full scale. The vented-gauge port allows the device to operate at home altitudes without barometric recalibration. The low 60 mV full-scale output can be amplified by a low-power op-amp and digitized at a low sample rate, keeping overall device power consumption low for battery-backed sleep-apnea machines. The DIP-8 package with tube port simplifies hose connection inside the device chassis.
Recommended
Recommended Products Summary
Engineering reference data for MPXV53GC7U — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXV53GP | MPX53DP | MPXV5050GP | MPX5700GP | MPXV4115VC6U |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 8-DIP (0.550", 13.97 mm) Top Port | 8-DIP (0.550") - same | 8-DIP (0.550") - same | 8-DIP (0.550") - same | 8-DIP (0.550") - same | 8-DIP - same family |
| Pressure Range | 0-50 kPa | 0-50 kPa | 0-50 kPa | 0-50 kPa | 0-700 kPa | 15-115 kPa |
| Reference Type | Vented Gauge | Vented Gauge | Differential | Vented Gauge | Vented Gauge | Absolute |
| Output Type | Uncompensated 0-60 mV | Uncompensated 0-60 mV | Uncompensated 0-60 mV | Compensated 0.2-4.7 V | Compensated 0.2-4.7 V | Compensated 0.2-4.6 V |
| Sensitivity | 1.0 mV/kPa | 1.0 mV/kPa | 1.0 mV/kPa | 90 mV/kPa (compensated) | 6.4 mV/kPa (compensated) | 46 mV/kPa (compensated) |
| 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 |
| Mounting / Port | Through-Hole, Top Port 3.17 mm | Through-Hole, Top Port | Through-Hole, Dual Port | Through-Hole, Top Port | Through-Hole, Top Port | Through-Hole, Top Port |
Key Differentiators
- Vented-gauge reference with side vent hole (vs MPX53DP)
- Uncompensated raw output for lowest cost (vs MPXV5050GP)
- 50 kPa full-scale optimized for low-pressure medical / HVAC (vs MPX5700GP)
Design Notes
Estimated: power dissipation at 3 V excitation with 1.5 kΩ bridge impedance is roughly 6 mW per channel, totalling ~12 mW for both half-bridges. Provide a clean 3 V LDO regulator with at least 80 dB PSRR at 100 kHz (such as an LT3042 or TPS7A47) to keep excitation ripple out of the millivolt-level output. Any noise on the excitation rail appears directly in the differential output, so a dedicated regulator is preferred over sharing a digital rail.
Route the four bridge signals (Vex+, Vex-, Vout+, Vout-) as a tight twisted or quad bundle and place the instrumentation amplifier within 25 mm of the sensor pins. Use a guard trace tied to Vex- between Vout+ and Vout- to reduce common-mode noise. Add a 100 nF ceramic bypass cap directly across pins 4 and 5 of the sensor to shunt high-frequency excitation noise before it reaches the bridge.
Estimated: at 3 V excitation the bridge self-heats by approximately 5-10 °C above ambient. Because the MPXV53GC7U is uncompensated, this internal heating shifts both offset and span. Mount the sensor away from heat sources (regulators, power inductors, MCU) and provide a small copper pour under the device but not a large thermal mass that prevents the sensor from tracking ambient temperature changes during calibration.
Do not confuse the MPXV53GC7U (vented-gauge) with the MPX53AP (absolute) or MPX53DP (differential) - all share the same DIP-8 outline but have different port and reference configurations. Always check the side vent hole on the package to confirm vented-gauge topology. Also note that the uncompensated output is not ratiometric with excitation in a perfectly linear way; calibrate both offset (at 0 kPa) and span (at full scale) at production test for best accuracy.
Compliance Information
RoHS compliant per NXP product page. Not AEC-Q100 qualified; this part targets medical, HVAC, and industrial applications rather than automotive. MSL level not stated in the available data and is marked [DATA_NEEDED].
