MPXA6115AC6T1 - 15-115kPa Absolute Pressure Sensor | NXP
MPN: MPXA6115AC6T1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $13.5 | $13.50 |
| 10 | $12.15 | $121.50 |
| 100 | $10.85 | $1,085.00 |
| 500 | $9.75 | $4,875.00 |
| 1,000 | $8.65 | $8,650.00 |
MPXA6115AC6T1 Overview
An absolute pressure sensor is a transducer that measures pressure relative to a perfect vacuum sealed inside its reference chamber, as opposed to a gauge sensor that references ambient atmospheric pressure. The MPXA6115AC6T1 belongs to the broader hierarchy of MEMS (Micro-Electro-Mechanical Systems) sensors, which combine mechanical sensing elements with on-chip signal conditioning; it is a specific member of the integrated pressure sensor family, more granularly classified as an absolute-pressure-type piezoresistive transducer with embedded analog front-end. This integration eliminates external compensation circuitry and reduces design footprint for system engineers.
Key differentiating features include ±1.5% accuracy over 0°C to 85°C, a 5 V single-supply rail, and built-in electromagnetic interference (EMI) protection. The on-chip temperature compensation spans -40°C to +125°C, and the small-form-factor 8-SMD package with axial top port simplifies pneumatic tubing integration. Ratiometric output ensures noise immunity and accurate analog-to-digital conversion when paired with an ADC that shares the same 5 V reference.
Typical applications include automotive manifold absolute pressure (MAP) sensing, industrial process control, barometric pressure measurement for weather stations and altimeters, medical respiratory equipment, and HVAC system monitoring. The wide operating pressure range makes it particularly suited to measuring atmospheric pressure variations up to approximately 9000 m altitude equivalent.
Designers should provide adequate PCB keep-out around the top port to prevent airflow restriction, place a 0.1 µF decoupling capacitor close to the supply pin, and use a 16-bit or higher ADC to fully exploit the device's ~0.7 mV/LSB native resolution. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MPXA6115AC6T1 — 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 MPXA6115AC6T1 (same form factor and footprint) — differing in Output Type, Port Size, Port Style, Supply Voltage, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPXA6115AC6U
✅ Drop-In✓ In Stock
$9.95 / Unit
View Datasheet →MPXA6115AC6T
✅ Drop-In📋 Reference alternative (not in catalog)
MPXA6115AC7T1
✅ Drop-In📋 Reference alternative (not in catalog)
SSCDANN015PA2A3
✅ Drop-In📋 Reference alternative (not in catalog)
SSCDANN150PA2A3
✅ Drop-In📋 Reference alternative (not in catalog)
MPXA6115AC6T1 Maximum Ratings & Electrical Characteristics
| Manufacturer | NXP Semiconductors (formerly Freescale) |
| Pressure Type | Absolute |
| Operating Pressure Range | 15 kPa to 115 kPa (2.18 PSI to 16.68 PSI) |
| Output Voltage | 0.2 V to 4.7 V (ratiometric to 5 V supply) |
| Supply Voltage | 4.75 V to 5.25 V |
| Accuracy | ±1.5% (0°C to 85°C) |
| Operating Temperature | -40°C to +125°C |
| Package / Case | 8-SMD, Gull Wing, Top Port (Case 1737-02, SOP-8) |
| Port Size | 0.13" (3.17 mm) Tube, Top |
| Output Type | Analog, Ratiometric |
| Mounting Type | Surface Mount |
| Termination Style | PCB (Gull Wing) |
| Sensor Technology | MEMS Piezoresistive with on-chip signal conditioning |
| Full-Scale Span (VFS) | 4.5 V typical |
| RoHS Status | Compliant |
MPXA6115AC6T1 Pin Configuration
| Pin 1 | VCC — 5 V supply voltage (4.75 V to 5.25 V) |
| Pin 2 | VOUT — Ratiometric analog output 0.2 V to 4.7 V |
| Pin 3 | GND — Ground reference |
| Pin 4 | NC — Not connected (per datasheet) |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
Typical Applications
MPXA6115AC6T1 is suitable for 6 applications: Automotive Manifold Absolute Pressure (MAP) Sensing, Barometric Pressure and Altimeter Measurement, Medical Respiratory and CPAP Equipment, Industrial Process Control and Pneumatic Systems, HVAC and Building Automation, Consumer Appliance Pressure Monitoring.
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPXA6115AC6T1's 15-115 kPa range maps directly onto engine intake manifold pressure across all operating conditions from idle vacuum (~30 kPa absolute) to wide-open-throttle boost (~100 kPa absolute for naturally aspirated engines). Its ±1.5% accuracy from 0°C to 85°C is well within engine control unit MAP sensor requirements of ±2-3%, while the on-chip signal conditioning eliminates the external op-amp that bare piezoresistive bridges require. Placed in the intake tract just downstream of the throttle body via a vacuum hose to its top port, the sensor returns a 0.2-4.7 V ratiometric signal to the ECU's 5 V referenced ADC. Compared with discrete bridge sensors the MPXA6115AC6T1 trades about $1 of cost for several external components and EMC hardening - usually the right choice.
Recommended
Barometric Pressure and Altimeter Measurement
For weather stations, drone altimeters, and handheld GPS devices, the MPXA6115AC6T1's 115 kPa upper limit cleanly brackets standard sea-level atmospheric pressure (~101.325 kPa) with 13% margin, and its on-chip temperature compensation (-40°C to +125°C) prevents altitude-reading drift across outdoor operating ranges. The native 0.7 mV/LSB resolution at 5 V supply over 100 kPa span yields ~0.15 m resolution when fed to a 16-bit ADC, more than adequate for hiking altimeters and meteorological logging. Housed in the SOP-8 top-port Case 1737-02, the sensor vents through the package top - designers must keep the port unobstructed and avoid conformal coating over the inlet for accurate readings.
Recommended
Medical Respiratory and CPAP Equipment
Medical respiratory devices such as CPAP machines and spirometers use the MPXA6115AC6T1 to monitor patient airflow and pressure in the breathing circuit. The sensor's ±1.5% accuracy is well within medical-grade pressure monitoring requirements and the integrated signal conditioning reduces BOM for cost-sensitive single-patient-use designs. The compact 8-SMD top-port package allows the pressure tap to be integrated directly into the patient tubing manifold with minimal dead volume. Designers should still validate biocompatibility of any tubing interface material and consider the -Q1 suffix variant for medical applications requiring ISO 13485 traceability.
Recommended
Industrial Process Control and Pneumatic Systems
In industrial pneumatic control panels, the MPXA6115AC6T1 measures compressed-air line pressure from vacuum (15 kPa absolute during pump-down) up to 115 kPa for low-pressure supply regulation, giving a single sensor that covers both vacuum and positive-pressure stages without a gauge/absolute swap. The on-chip EMI protection and bipolar op-amp signal chain survive the electrical noise of factory floors with VFD drives and motor contactors. The SOP-8 surface-mount package allows direct PCB integration into DIN-rail controllers, with a tube fitting over the top port for pneumatic coupling. Compared with industrial gauge transducers costing $30-50, the MPXA6115AC6T1 delivers NXP's automotive-grade reliability at consumer pricing.
Recommended
HVAC and Building Automation
Building HVAC systems use the MPXA6115AC6T1 for duct static pressure sensing across variable-air-volume (VAV) boxes, where maintaining proper airflow requires absolute pressure reference rather than gauge. The sensor's 15-115 kPa range covers the typical 0-1 inH2O (0-249 Pa) duct pressure spans via simple resistive scaling, and its temperature-compensated output eliminates the drift that plagues uncompensated bridge sensors in rooftop installations. The low 5 V single-supply operation enables direct interface to building automation controllers powered from 24 V AC via a small 5 V LDO; alternatively the TLE4254G low-drop regulator suits the same role with automotive-grade transient immunity.
Recommended
Consumer Appliance Pressure Monitoring
Consumer products such as washing-machine water-level sensors, smart vacuum cleaners, and portable espresso machines leverage the MPXA6115AC6T1 for low-cost absolute pressure monitoring where its integrated signal chain replaces discrete bridges plus instrumentation amplifiers. The 8-SMD package with axial top port is friendly to low-profile consumer enclosures and the on-chip temperature compensation yields consistent readings across cold-fill and warm-fill cycles. Designers should account for the ratiometric output requiring a shared 5 V reference with the host ADC; otherwise an absolute-voltage reference like the TL431 may be added for true absolute readings independent of supply variation.
Recommended
Recommended Products Summary
Engineering reference data for MPXA6115AC6T1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXA6115AC6U | MPXA6115AC6T | SSCDANN015PA2A3 | SSCDANN150PA2A3 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Honeywell | Honeywell |
| Package | 8-SMD Case 1737-02 (SOP-8), Top Port | 8-SMD Case 1737-02 - same | 8-SMD Case 1737-02 - same | 8-SMD SOP-8 equivalent - same | 8-SMD SOP-8 equivalent - same |
| Operating Pressure Range | 15-115 kPa (2.18-16.68 PSI) | 15-115 kPa - same | 15-115 kPa - same | 0-15 PSI absolute | 0-150 PSI absolute |
| Output Voltage | 0.2-4.7 V (5 V supply) | 0.2-4.7 V - same | 0.2-4.7 V - same | 0.5-4.5 V ratiometric | 0.5-4.5 V ratiometric |
| Accuracy | ±1.5% (0°C to 85°C) | ±1.5% - same | ±1.5% - same | ±0.25% FS (non-ratiometric compensated) | ±0.25% FS |
| Supply Voltage | 4.75-5.25 V | 4.75-5.25 V - same | 4.75-5.25 V - same | 4.75-5.25 V | 4.75-5.25 V |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C - same | -40°C to +125°C - same | -40°C to +85°C | -40°C to +85°C |
| Output Type | Analog ratiometric | Analog ratiometric - same | Analog ratiometric - same | Analog ratiometric | Analog ratiometric |
Key Differentiators
- Integrated signal conditioning eliminates external op-amp (vs SSCDANN015PA2A3)
- Wider operating temperature range than cross-brand equivalents (vs SSCDANN015PA2A3)
- Mature family with multiple drop-in package variants (vs MPXA6115AC6U)
Design Notes
Decouple the MPXA6115AC6T1 supply pin (VCC, pin 1) with a 0.1 µF ceramic capacitor placed within 5 mm of the package and a 10 µF bulk capacitor at the regulator output. Estimated: the sensor draws <10 mA quiescent current per the family datasheet, so a TPS7A4533 or LM7805 LDO is sufficient. Sharing the supply with the host ADC reference ensures the ratiometric output tracks reference noise and drift.
Keep the top pressure port free of conformal coating, flux residue, and PCB silkscreen to avoid airflow restriction. Route the analog VOUT trace away from digital switching lines and switch-mode nodes; keep trace length under 50 mm and surround with a ground pour on both layers for EMI immunity. The sensor's exposed plastic top is the only pressure inlet, so mechanical mounting should use a soft gasket and never rigid epoxy against the port.
Do not apply pressure exceeding 200 kPa absolute - mechanical damage will occur. Avoid mounting the package with the top port facing down (venting against PCB) as trapped oil or flux can block the inlet. When interpreting the ratiometric output, remember that any error in the 5 V reference directly translates to output error; for absolute measurements independent of supply, use a precision reference like the TL431 or REF02 instead of ratiometric ADC conversion.
For the cleanest output, place a unity-gain op-amp buffer such as the OPA2333 (zero-drift chopper) or MCP6001 immediately adjacent to the sensor output pin to drive the ADC input and prevent loading-induced offset. Add an RC low-pass filter (1 kΩ + 1 nF, fc ≈ 160 kHz) if the application can tolerate the group delay; the sensor's intrinsic noise bandwidth extends to about 1 kHz and is dominated by thermal-mechanical (Brownian) noise of the MEMS diaphragm.
Compliance Information
Commercial-grade MPXA6115AC6T1 is RoHS compliant and lead-free per NXP product environmental compliance; choose -Q1 suffix variant for AEC-Q100 automotive qualification. Halogen-free per NXP declaration.
