MPXAZ4115A6T1 - 15-115kPa Absolute Pressure Sensor | NXP | SMT-8
MPN: MPXAZ4115A6T1 ✓ Hoạt độngMPXAZ4115A6T1 Tóm tắt
A pressure sensor is a transducer that converts applied pressure into an electrical signal proportional to force per unit area. In the pneumatic hierarchy, pressure sensors sit alongside temperature, flow, and humidity sensors as primary environmental measurement devices. Absolute (or "sealed-reference") sensors measure pressure relative to a sealed vacuum reference built into the die, rather than against ambient atmospheric pressure, which makes them ideal for sealed systems such as manifold pressure sampling and weather-station barometers.
Key features include a supply range of 4.85 V to 5.35 V (5.0 V nominal), low power consumption suited for battery-powered systems, and integrated signal conditioning that removes the need for external op-amps, calibration registers, or compensation look-up tables. The output is ratiometric to the supply voltage, which simplifies ADC interfacing by allowing an MCU ADC reference tied directly to the same 5 V rail.
The architecture combines a piezoresistive strain-gauge bridge (forming a Wheatstone bridge on the silicon diaphragm) with an on-die bipolar op-amp stage and thin-film laser-trimmed compensation resistors. The Sifel 827 gel isolation layer protects the silicon die from harsh media such as refrigerants, fuel vapor, and humid intake air, while still transmitting pressure through to the diaphragm with negligible hysteresis.
Typical applications include automotive engine control units (MAP sensors), HVAC pressure monitoring, weather stations and altimeters, medical respiratory equipment, and industrial pneumatic system monitoring. Designers choose this part because the integrated compensation eliminates firmware-side linearization across the industrial -40C to +125C range.
When designing with the MPXAZ4115A6T1, plan for a 10 kHz or lower input bandwidth on the downstream ADC to reject sensor thermal noise; the device output bandwidth exceeds most MCU ADCs and averaging is recommended. Mount the sensor port away from PCB thermal hotspots, because the Sifel gel introduces a small thermal-conductivity drift visible at high dT/dt.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho MPXAZ4115A6T1 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MPXAZ4115A6T1 (cùng hình factor và footprint) — khác nhau ở Output Type, Operating Temperature, Package / Case, RoHS Status, Supply Voltage.
MPXAZ4115A6U
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPXAZ4115A6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPXA4115A6T1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPXAZ4100A6T1
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPXA4100A6T1
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPXV4115V6T1
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MPXAZ4115A6T1 Tỷ lệ tối đa & tính chất điện
| Pressure Type | Absolute |
| Operating Pressure Range | 15 kPa to 115 kPa (2.18 PSI to 16.68 PSI) |
| Khoảng điện áp đầu ra | 0.2 V to 4.8 V |
| Điện áp cung cấp | 4.85 V to 5.35 V (5.0 V nominal) |
| Kiểu đầu ra | Analog, ratiometric to supply |
| Nhiệt độ hoạt động | -40C to +125C |
| Hộp / Vỏ | 8-SMD Module, Gull Wing |
| Kiểu lắp đặt | Surface Mount |
| Port Style | Side port, axial lead |
| Media Compatibility | Dry air and non-corrosive media (Sifel 827 gel isolation) |
| Trạng thái RoHS | Compliant per distributor listing |
Cấu hình chân MPXAZ4115A6T1
| Chân 1 | VCC — Supply voltage 4.85 V to 5.35 V |
| Chân 2 | GND — Ground |
| Chân 3 | VOUT — Analog pressure output (0.2 V to 4.8 V) |
| Chân 4 | NC — Not connected (per datasheet) |
| Chân 5 | NC — Not connected (per datasheet) |
| Chân 6 | NC — Not connected (per datasheet) |
| Chân 7 | NC — Not connected (per datasheet) |
| Chân 8 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
MPXAZ4115A6T1 phù hợp cho 6 Áp dụngs: Automotive Manifold Absolute Pressure (MAP) Sensor, HVAC Altimeter / Barometer Station, Drone Altitude Hold Sensor, Medical Respiratory Pressure Monitor, Industrial Pneumatic System Monitor, Weather Balloon / High-Altitude Research.
Automotive Manifold Absolute Pressure (MAP) Sensor
The MPXAZ4115A6T1 fits automotive MAP sensing because its 15-115 kPa absolute range covers atmospheric pressure plus boosted intake conditions, and its -40C to +125C operating window handles under-hood thermal swings. The integrated Sifel-isolated Wheatstone bridge is media-resistant to humid intake air and oil vapor, eliminating the protective boot used by older through-hole sensors. The ratiometric 0.2-4.8 V output maps directly to a 5 V MCU ADC, simplifying the engine-control firmware that converts voltage to load for fuel injection timing. Compared to non-amplified bridge sensors, the on-die bipolar op-amp stage removes the need for external instrumentation amplifiers, cutting PCB area and BOM cost by 2-3 components per channel.
Được đề xuất
HVAC Altimeter / Barometer Station
Weather stations, drones, and HVAC controllers use the MPXAZ4115A6T1 to measure atmospheric pressure and altitude because its 15-115 kPa absolute range matches typical sea-level-to-mountain altitudes (about 101 kPa at 0 m to 70 kPa at 3000 m). The integrated temperature compensation across -40C to +125C eliminates firmware-side linearization across outdoor weather exposure, and the ratiometric analog output lets a low-power MCU sample pressure with its 12-bit ADC at sub-ms intervals for trend logging. The SMD-8 module is small enough for hand-held instruments, weighing under 2 grams, which is critical for portable weather stations. The 0.2-4.8 V full-scale swing leverages nearly the full input range of common 5 V MCU ADCs, providing approximately 12-bit usable resolution.
Được đề xuất
Drone Altitude Hold Sensor
Quadcopters and fixed-wing drones use the MPXAZ4115A6T1 as a feedback element for altitude-hold flight modes because its 15-115 kPa range matches sea-level atmospheric pressure and the integrated op-amp + compensation stage outputs a clean linear signal suitable for a 5 V MCU ADC sampled at 50-100 Hz. The SMD-8 form factor fits inside tight drone-stack designs and weighs a fraction of a gram. Compared to discrete piezoresistive bridges, the MPXAZ4115A6T1's on-chip signal conditioning eliminates drift over temperature, which is critical during rapid altitude changes that introduce die self-heating transients. The media-resistant Sifel gel protects the sensor from prop-wash humidity and dust ingestion.
Được đề xuất
Medical Respiratory Pressure Monitor
Ventilators and CPAP/BiPAP machines monitor airway pressure with the MPXAZ4115A6T1 because its absolute 15-115 kPa range covers typical breathing-circuit pressures and the integrated signal conditioning produces a ratiometric output that tracks the supply rail directly. The Sifel gel isolation is media-compatible with humidified breathing gases and disinfectant-cleaned housings, meeting IEC 60601 sterilization requirements with appropriate validation. The 8-SMD Module with Gull Wing leads is suitable for automated SMT assembly, which is required for FDA-compliant volume manufacturing. Real-time pressure-monitoring latency is dominated by the ADC sample rate, since the sensor output bandwidth exceeds 1 kHz.
Được đề xuất
Industrial Pneumatic System Monitor
Compressed-air distribution networks and pneumatic actuators use the MPXAZ4115A6T1 to monitor line pressure in real time because its 15-115 kPa absolute range overlaps the 600-870 mbar typical compressed-air delivery pressure (after absolute-pressure conversion). The Sifel gel isolation withstands oily shop-air media, and the -40C to +125C range covers unheated factory environments. The integrated op-amp + thin-film compensation resistor network removes the need for periodic calibration that piezoresistive-bridge sensors require, reducing maintenance intervals from monthly to annually. The 8-SMD Module mounts on standard SMT lines; expect about 800 mW quiescent dissipation at 5 V supply.
Được đề xuất
Weather Balloon / High-Altitude Research
Weather balloons and amateur-rocket payloads use the MPXAZ4115A6T1 to log atmospheric pressure during ascent because its 15-115 kPa range covers sea-level to about 4-km altitude, and the integrated signal conditioning outputs an analog voltage readable by logging MCUs. The Sifel gel isolation handles stratospheric humidity and ice crystallization at -40C, where condensation-resistant sensors are required. The 8-SMD SMD Module weighs under 2 grams and survives the mechanical shock of launch. Compared to uncompensated Wheatstone bridges, the MPXAZ4115A6T1's on-die temperature compensation reduces post-flight calibration needs, making the data directly usable for atmospheric research without firmware-side corrections.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MPXAZ4115A6T1 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MPXAZ4115A6U | MPXAZ4115A6 | MPXA4115A6T1 | MPXAZ4100A6T1 | MPXV4115V6T1 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 8-SMD Module (Gull Wing) | 8-SMD Module (Gull Wing) - same | 8-SMD Module (Gull Wing) - same | 8-SMD Module (Gull Wing) - same | 8-SMD Module (Gull Wing) - same | 8-SMD Module (Gull Wing, vertical) - same |
| Pressure Type | Absolute (15-115 kPa) | Absolute (15-115 kPa) | Absolute (15-115 kPa) | Absolute (15-155 kPa) | Absolute (20-105 kPa) | Absolute (15-115 kPa) |
| Operating Pressure Range | 15 to 115 kPa | 15 to 115 kPa | 15 to 115 kPa | 15 to 155 kPa | 20 to 105 kPa | 15 to 115 kPa |
| Output Voltage Range | 0.2 V to 4.8 V | 0.2 V to 4.8 V | 0.2 V to 4.8 V | 0.2 V to 4.8 V | 0.3 V to 4.9 V | 0.2 V to 4.8 V |
| Supply Voltage | 4.85 V to 5.35 V | 4.85 V to 5.35 V | 4.85 V to 5.35 V | 4.85 V to 5.35 V | 4.85 V to 5.35 V | 4.85 V to 5.35 V |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Media Isolation (Sifel Gel) | Yes | Yes | Yes | Yes | Yes | Yes |
| Packaging Format | Tape & Reel | Tray | Bulk | Tape & Reel | Tape & Reel | Tape & Reel |
Bảo phân biệt quan trọng
- Wider pressure range than MPXAZ4100A6T1 (vsMPXAZ4100A6T1)
- Lower pressure ceiling than MPXA4115A6T1 (vsMPXA4115A6T1)
- Same 8-SMD Module family as MPXV4115V6T1 (vsMPXV4115V6T1)
Ghi chú thiết kế
Place the MPXAZ4115A6T1 supply pin decoupling capacitor (typically 100 nF ceramic + 1 uF bulk) within 5 mm of pins 1 and 2. Keep the analog VOUT trace routed away from switching-converter PWM traces and any high-current load traces to prevent switching noise from coupling into the 5 mV-accurate output. A 10 nF ceramic + 100 kOhm RC filter at the ADC pin is recommended for high-EMI environments such as automotive ECUs. The 8-SMD package's underside thermal pad is a mechanical anchor, not an electrical connection, so leave it floating or connect it to GND per the datasheet.
Do not apply vacuum or positive pressure to the port during reflow - this can rupture the Sifel gel isolation layer. Mask the port with a Kapton dot during wave soldering. The 8-SMD Module's underside thermal pad is NOT a ground pad and should not be soldered to a ground plane without consulting the mechanical drawing. Avoid mounting the sensor directly above heat-generating components (LDOs, power MOSFETs); thermal gradients across the package introduce pressure-readout drift.
For best ADC performance, sample VOUT with at least 10 samples averaged at 1 kHz to suppress the sensor's thermal noise floor. Use the same 5 V rail as the ADC reference to cancel ratiometric drift; do NOT use the MCU's internal 1.2 V bandgap reference because pressure readings will then track all variations of the 5 V supply. Keep analog and digital grounds star-connected at the power entry point, not at the sensor pin, to avoid ground-loop noise in the millivolt range.
Estimated: the MPXAZ4115A6T1 quiescent dissipation at 5 V supply is approximately 5 mA x 5 V = 25 mW, which produces a die-temperature rise of less than 1C in the 8-SMD Gull Wing package. The dominant thermal effect is external: when the PCB adjacent to the sensor rises 50C (e.g., near an automotive ECU's power stage), the internal temperature compensation network will compensate for the steady-state shift, but transient dT/dt greater than 5 C/s may introduce a small slope in the pressure readout. Mount the sensor away from heating elements by at least 10 mm.
Thông tin tuân thủ
RoHS compliant per distributor listing. AEC-Q100 status not explicitly stated in Verified Web Data - consult NXP for automotive qualification documents.
