MPXA4250AC6T1 - 20-250 kPa MAP Pressure Sensor, 5V | NXP
MPN: MPXA4250AC6T1 ✓ Hoạt độngMPXA4250AC6T1 Tóm tắt
Manifold Absolute Pressure sensors are a class of piezoresistive transducers that measure the absolute pressure inside an engine's intake manifold. The absolute pressure reading, combined with intake air temperature, allows the ECU to compute air mass and determine the optimal fuel injector pulse width. Within the broader sensor hierarchy, a MAP sensor belongs to pressure sensors, which sit alongside temperature, motion, and position sensors as primary automotive powertrain feedback devices. The MPX/MPXA family from NXP pioneered on-chip signal conditioning, eliminating the external op-amp and temperature-compensation circuitry that earlier MAP designs required.
Key features include on-chip temperature compensation from -40 C to +125 C, factory calibration of offset and full-scale output, ratiometric analog output that tracks the supply voltage, and a robust 8-SMD gull-wing package rated for automotive underhood environments. The integrated signal path combines a piezoresistive Wheatstone bridge with a precision instrumentation amplifier, achieving better than +/- 1.5% FS accuracy across the full temperature range.
Typical applications include automotive engine control (gasoline and diesel), turbocharger boost sensing, motorcycle and small-engine fuel injection (EFI), and industrial pneumatic pressure monitoring. The top-side port accepts a 3.17 mm tube for direct manifold tap connection.
When designing with this device, decouple the Vcc pin with a 100 nF ceramic capacitor placed within 5 mm of the package. Add a 10 kohm pull-down on the output if the ECU ADC input is high-impedance, and route analog ground separately from digital ground to avoid ground-loop noise coupling into the pressure reading.
This page synthesizes distributor stock and pricing, AEC-Q100-qualified drop-in alternatives from NXP's MPX family, and practical PCB layout guidance not collected in any single manufacturer datasheet revision.
Bộ thay thế dễ dàng lắp đặt cho MPXA4250AC6T1 — 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 MPXA4250AC6T1 (cùng hình factor và footprint) — khác nhau ở Pressure Type, Output Type, Package, Sensitivity, Operating Temperature.
MPXA4250AC6U
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPXA4250AP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPXA4250AC7U
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MPXH6250AC6U
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPXH6300AC6U
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MPXA4250AC6T1 Tỷ lệ tối đa & tính chất điện
| Pressure Type | Absolute (MAP) |
| Operating Pressure Range | 20 kPa to 250 kPa (2.9 PSI to 36.26 PSI) |
| Khoảng điện áp đầu ra | 0.2 V to 4.9 V |
| Điện áp cung cấp | 4.85 V to 5.35 V (5 V typical) |
| Kiểu đầu ra | Analog, ratiometric |
| Nhiệt độ hoạt động | -40 C to +125 C |
| Hộp | 8-SMD, Gull Wing, Top Port |
| Port Size | 0.13 in (3.17 mm) Tube, Top Side |
| Kiểu lắp đặt | Surface Mount |
| Termination Style | PCB (Gull Wing) |
| Pressure Port Style | Top Port, Vertical Manifold Tap |
| Sensor Technology | Piezoresistive (Wheatstone bridge, on-chip amplifier) |
| AEC-Q100 Qualification | Qualified (automotive grade) |
| Trạng thái RoHS | Compliant |
Cấu hình chân MPXA4250AC6T1
| Chân 1 | Vcc — 5 V supply input |
| Chân 2 | GND — Ground |
| Chân 3 | Vout — Analog ratiometric output (0.2 V to 4.9 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
MPXA4250AC6T1 phù hợp cho 6 Áp dụngs: Automotive Engine Control (Gasoline/Diesel), Turbocharger Boost Sensing, Motorcycle and Small-Engine EFI, Industrial Pneumatic Pressure Monitoring, HVAC and Refrigeration System Monitoring, Altitude and Barometric Pressure Measurement.
Automotive Engine Control (Gasoline/Diesel)
The MPXA4250AC6T1's 20-250 kPa absolute range and AEC-Q100 qualification make it ideal for Manifold Absolute Pressure (MAP) sensing in gasoline and diesel engine control units. Connected to the intake manifold via the top-side 3.17 mm port, it provides the ECU with real-time absolute pressure data that, combined with intake air temperature, computes air mass for optimal fuel injection pulse width.
Được đề xuất
Turbocharger Boost Sensing
For turbocharged engines producing up to ~1.4 bar of boost, the MPXA4250AC6T1's 250 kPa full-scale covers the operating envelope without saturating. The ratiometric 0.2-4.9 V output connects directly to ECU ADC inputs, and the on-chip temperature compensation maintains accuracy from cold-start to high-load boost conditions. Use this sensor on the charge pipe upstream of the throttle body.
Được đề xuất
Motorcycle and Small-Engine EFI
The MPXA4250AC6T1's compact 8-SMD footprint fits within space-constrained motorcycle ECU enclosures, and its top-side port accepts a standard 3 mm vacuum hose tap. The 5 V single-supply operation matches common motorcycle regulator outputs, while the AEC-Q100 rating ensures reliability under underhood thermal stress. The 0.2-4.9 V swing spans naturally-aspirated vacuum through small turbo boost.
Được đề xuất
Industrial Pneumatic Pressure Monitoring
Beyond automotive use, the MPXA4250AC6T1 serves industrial pneumatic systems monitoring compressed air lines and vacuum generators. The 20-250 kPa range covers atmospheric and slightly pressurized conditions typical of factory pneumatic networks. The ratiometric output simplifies interface to industrial PLC analog input modules powered from the same 5 V rail.
Được đề xuất
HVAC and Refrigeration System Monitoring
The MPXA4250AC6T1 monitors refrigerant line pressure and air handler static pressure in HVAC and refrigeration systems. Its calibrated output directly drives system controllers, and the on-chip temperature compensation maintains accuracy across the -40 C to +125 C range covering rooftop unit and cold-storage applications.
Được đề xuất
Altitude and Barometric Pressure Measurement
For drone flight controllers, altimeters, and weather stations, the MPXA4250AC6T1's 20-250 kPa absolute range maps directly to barometric pressure from sea level (~101 kPa) up to ~10 km altitude (~26 kPa). The ratiometric analog output interfaces directly to microcontroller ADC inputs without additional signal conditioning, and the small 8-SMD package suits weight-sensitive drone designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MPXA4250AC6T1 — 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 | MPXA4250AC6U | MPXA4250AP | MPXA4250AC7U | MPXH6250AC6U |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 8-SMD, Gull Wing, Top Port | 8-SMD, Gull Wing, Top Port - same | 8-SMD, Gull Wing, Top Port - same | 8-SMD, Gull Wing, Top Port - same | 8-SMD, Gull Wing, Top Port - same |
| Pressure Range | 20-250 kPa | 20-250 kPa | 20-250 kPa | 20-250 kPa | 20-250 kPa |
| Output Voltage | 0.2-4.9 V | 0.2-4.9 V | 0.2-4.9 V | 0.2-4.9 V | 0.2-4.9 V |
| Supply Voltage | 4.85-5.35 V | 4.85-5.35 V | 4.85-5.35 V | 4.85-5.35 V | 4.85-5.35 V |
| Temperature Range | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +125 C |
| Overpressure Tolerance | Standard | Standard | Standard | Standard | Enhanced (H series) |
| AEC-Q100 | Qualified | Qualified | Qualified | Qualified | Qualified |
Bảo phân biệt quan trọng
- Tape-and-reel packaging optimized for high-volume automotive assembly (vsMPXA4250AC6U)
- Higher overpressure margin for harsh transient environments (vsMPXH6250AC6U)
- On-chip signal conditioning eliminates external amplifier circuits (vsMPX4250A through-hole variant)
Ghi chú thiết kế
Decouple Vcc (pin 1) with a 100 nF ceramic capacitor placed within 5 mm of the package to suppress supply transients from the automotive 5 V rail. Add a bulk 10 uF tantalum or aluminum polymer capacitor on the ECU analog supply node. The MPXA4250AC6T1 draws approximately 7 mA typical; the regulator must source at least 15 mA peak under cold-start conditions. Per NXP application note, do not share the analog and digital ground returns - use a star-ground topology at the sensor GND pin.
Route the analog output trace away from high-current switching paths (injector drivers, ignition coils) with at least 5 mm of clearance. Use a guard ring tied to analog ground around the output trace if the ECU PCB has noisy digital regions. The output is ratiometric to Vcc, so the ADC reference should track the same 5 V rail to maintain calibration accuracy. A 10 kohm pull-down on Vout prevents the output from floating if the sensor loses supply.
Do not reverse the pressure port orientation - the top-side port must face the manifold vacuum source. Do not apply pressure exceeding the 250 kPa full-scale plus transient margin; the datasheet specifies maximum overpressure ratings that must be observed to avoid sensor element damage. Avoid contaminating the port with oil or moisture; if the medium is wet, install an inline hydrophobic filter. The sensor is calibrated at the factory - no external trim is required or should be attempted.
Thông tin tuân thủ
AEC-Q100 qualified for automotive underhood applications. RoHS and REACH compliant per NXP product page. Conflict-minerals declaration available from NXP.
