MPXH6250A6T1 - 20-250kPa Absolute Pressure Sensor | NXP/STMicro
MPN: MPXH6250A6T1 ✓ Hoạt độngMPXH6250A6T1 Tóm tắt
An absolute pressure sensor is a transducer that outputs a voltage proportional to the pressure measured relative to a sealed reference vacuum rather than to ambient atmosphere. It belongs to the broader sensor product category (sensor -> pressure sensor -> absolute pressure sensor -> MEMS-based piezoresistive sensor), commonly used to close the air-fuel feedback loop in gasoline direct-injection engines and to monitor boost pressure in turbocharged systems. The MPXH6250A6T1's 0-5 V output swings a span of roughly 230 kPa across 4.6 V, giving the MCU an analog digital-converter channel's worth of dynamic range without instrumentation amplification.
Key features include a typical full-scale span of 4.6 V, accuracy better than 1.5% over 0 to 85 C per the manufacturer datasheet, and integrated thin-film resistor networks that trim offset, span and temperature coefficient at the wafer level. The SOIC-8 package exposes four port variants (ported axial, ported side, dual-port, no-port); the T1 suffix here selects the axial-port option. The device operates from a single 4.74 V to 5.46 V supply, sinks a typical 5 mA supply current, and includes EMI/RFI hardening on the output pin.
The MPXH6250A6T1 uses a monolithic piezoresistive Wheatstone bridge diffused into a silicon diaphragm, followed by an on-chip bipolar op-amp stage that conditions and temperature-compensates the millivolt-level bridge output into the 0.3-4.9 V swing. The integrated thin-film laser-trimmed network cancels first-order temperature errors, while a second-order compensation is performed in software by the host ECU. The 8-SOIC packaging routes pressure into a forward axial port, and the internal gel isolation (where fitted) allows direct media contact on selected variants.
Typical applications include automotive manifold absolute pressure (MAP) sensing for engine control units (ECUs), barometric air-pressure correction for fuel-injection strategies, HVAC refrigerant pressure monitoring, and industrial pneumatic control loops. Because the part is AEC-Q qualified by automotive pedigree, it also fits heavy-duty truck and motorcycle engine management.
When designing with this device, route the analog output through an RC low-pass filter (typically 1 kohm / 100 nF) before the ADC input to suppress out-of-band noise and motor-borne spikes, and keep supply decoupling close to the VCC pin with a 100 nF ceramic plus 1 uF bulk. The axial port draws airflow over the gel-isolated die, so avoid kinking or filtering the inlet line.
This page synthesizes distributor pricing snapshots, same-brand and cross-brand drop-in alternatives, AEO-optimized FAQs and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho MPXH6250A6T1 — 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 MPXH6250A6T1 (cùng hình factor và footprint) — khác nhau ở Accuracy, Output Type, Supply Voltage, Operating Temperature, Port Style.
MPXH6250AC6T1
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MPXHZ6250A6T1
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MPXH6300A6U
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPXH6250A6T1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MPXH6300A6T1
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MPXH6250A6T1 Tỷ lệ tối đa & tính chất điện
| Pressure Type | Absolute |
| Operating Pressure Range | 20 kPa to 250 kPa (2.9 PSI to 36.26 PSI) |
| Kiểu đầu ra | Analog, ratiometric |
| Khoảng điện áp đầu ra | 0.3 V to 4.9 V |
| Full-Scale Span (typical) | 4.6 V |
| Điện áp cung cấp | 4.74 V to 5.46 V (5 V typical) |
| Supply Current (typical) | 5 mA |
| Accuracy | 1.5 % over 0 C to 85 C (datasheet typical) |
| Port Style | Axial port (T1 suffix) |
| Hộp | 8-SOIC (0.295 inch / 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| On-Chip Signal Conditioning | Yes (bipolar op-amp + thin-film trimming network) |
| Temperature Compensation | Yes (on-chip, calibrated) |
| Media Compatibility | Dry air / non-corrosive gases (T1 variant) |
| Trạng thái RoHS | Compliant per NXP product page |
Cấu hình chân MPXH6250A6T1
| Chân 1 | VOUT_HI — Differential bridge output (high side) - test/calibration use |
| Chân 2 | NC — Not connected (per datasheet) |
| Chân 3 | VCC — 5 V supply input |
| Chân 4 | NC — Not connected (per datasheet) |
| Chân 5 | GND — Ground reference |
| Chân 6 | VOUT_LO — Differential bridge output (low side) - test/calibration use |
| Chân 7 | VOUT — Conditioned analog pressure output (0.3 V to 4.9 V) |
| Chân 8 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
MPXH6250A6T1 phù hợp cho 6 Áp dụngs: Engine Manifold Absolute Pressure (MAP) Sensing, Barometric Pressure Correction, HVAC Refrigerant Pressure Monitoring, Industrial Pneumatic Control Loops, Motorcycle and Small Engine ECU, Diesel Particulate Filter (DPF) Differential Pressure Reference.
Engine Manifold Absolute Pressure (MAP) Sensing
The MPXH6250A6T1's 20-250 kPa absolute range lines up precisely with naturally aspirated gasoline engine manifold pressures, and its ratiometric 0.3-4.9 V output drives a 5 V-tolerant ECU ADC directly without instrumentation gain. On-chip temperature compensation plus second-order SW compensation in the ECU hold total accuracy inside 1.5% from 0 C to 85 C, which is the band required for closed-loop air-fuel control. This part replaces earlier generation MAP sensors that needed external op-amp stages. Use it with one series resistor and a 100 nF capacitor at the ADC input to filter high-frequency injector and ignition noise.
Được đề xuất
Barometric Pressure Correction
Mounted on the ECU housing with no pressure port, the MPXH6250A6T1 reads ambient barometric pressure for fuel-injection strategy adjustment across altitude changes. Its 20-250 kPa span covers sea-level (101 kPa) to well above stratospheric cruise (any practical road altitude), and the 4.6 V full-scale span maps to 23.5 kPa per volt - plenty of resolution for 1% altimetry correction. The integrated op-amp stage means no external reference or gain error contribution, which is essential when the barometric channel is summed with the MAP channel upstream of the closed-loop PID.
Được đề xuất
HVAC Refrigerant Pressure Monitoring
Refrigerant line pressures in HVAC systems span 100-2,500 kPa, so the MPXH6250A6T1 is suited for the low-pressure evaporator side (20-250 kPa) where it can indicate low-refrigerant failure modes before the compressor is damaged. Its dry-air media compatibility accommodates the refrigerant oil-mist environments typical of AC service lines when an inline filter-drier is added. The 0.3-4.9 V swing drops directly onto a 0-5 V industrial ADC, simplifying the inverter-controller analog front end.
Được đề xuất
Industrial Pneumatic Control Loops
Factory pneumatic systems operating at 4-10 bar (400-1,000 kPa) typically add a downstream regulator to drop pressure to 20-250 kPa for the sensor, fitting the MPXH6250A6T1's range exactly. The on-chip signal conditioning means no in-line amplifier is needed before the PLC's analog input module, reducing panel space. The 5 mA supply current keeps total loop power well within a 4-20 mA current-loop budget when battery-backed. The wide 5 V supply tolerance (4.74-5.46 V) tolerates common 24 V industrial bus drops after the local DC-DC converter.
Được đề xuất
Motorcycle and Small Engine ECU
The MPXH6250A6T1's 8-SOIC surface-mount footprint is far smaller than legacy through-hole MAP sensors, enabling motorcycle ECU miniaturization. Its integrated compensation also drops calibration time and part count in price-sensitive small-engine markets where every BOM line counts. The 20-250 kPa absolute span maps well onto two-stroke and small-displacement four-stroke manifold pressures, and the ratiometric output simplifies the wiring harness (no separate calibration pin). Designers typically gate on AEC-Q100 pedigree where the application is on-road.
Được đề xuất
Diesel Particulate Filter (DPF) Differential Pressure Reference
Some DPF systems use a MAP-grade absolute sensor as a reference arm in a differential pressure bridge, where the absolute channel anchors the ambient side to remove barometric drift. The MPXH6250A6T1 fills this reference slot cleanly: low output noise, on-chip temperature compensation, and a robust 8-SOIC package that survives under-hood temperatures. Combined with a gauge sensor on the high side, the design closes the sooting-load feedback loop without instrument-amplifier drift.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MPXH6250A6T1 — 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 | MPXH6250AC6T1 | MPXHZ6250A6T1 | MPXH6300A6U | MPXH6250A6T1 (ST second source) | MPXH6300A6T1 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | STMicroelectronics | NXP Semiconductors |
| Package | 8-SOIC (7.50 mm) | 8-SOIC (7.50 mm) - same | 8-SOIC (7.50 mm) - same | 8-SOIC (7.50 mm) - same | 8-SOIC (7.50 mm) - same | 8-SOIC (7.50 mm) - same |
| Pressure Range | 20 kPa to 250 kPa | 20 kPa to 250 kPa | 20 kPa to 250 kPa | 20 kPa to 304 kPa | 20 kPa to 250 kPa | 20 kPa to 304 kPa |
| Output Voltage | 0.3 V to 4.9 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V (extended span) | 0.3 V to 4.9 V | 0.3 V to 4.9 V (extended span) |
| Supply Voltage | 4.74 V to 5.46 V | 4.74 V to 5.46 V | 4.74 V to 5.46 V | 4.74 V to 5.46 V | 4.74 V to 5.46 V | 4.74 V to 5.46 V |
| Supply Current | 5 mA typical | 5 mA typical | 5 mA typical | 5 mA typical | 5 mA typical | 5 mA typical |
| On-Chip Compensation | Yes (bipolar op-amp + thin-film trim) | Yes | Yes | Yes | Yes | Yes |
| Port Configuration | Axial (T1) | Axial (T1) | No port (Z) | Axial (U-side port) | Axial (T1) | Axial (T1) |
Bảo phân biệt quan trọng
- Tightest MAP-grade pressure window in family (vsMPXH6300A6U)
- On-chip thin-film calibration eliminates external op-amp (vsLegacy MPX4100 series)
- ST second source shields supply chain risk (vsNXP-original MPXH6250A6T1 only)
Ghi chú thiết kế
Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of the VCC pin (pin 3) and a 1 uF bulk tantalum or ceramic across VCC to GND as close as the layout permits. The differential bridge reference pins (1 and 6) should be left floating on the board or routed to test points only - any capacitive load on those pins shifts the temperature compensation curve. Keep the analog output trace (pin 7) short and over a continuous ground pour to suppress ground-loop noise from the ECU's switching injectors.
Insert a 1 kohm series resistor and 100 nF capacitor to ground at the MCU ADC input pin to form a single-pole RC low-pass filter (~1.6 kHz cutoff) for the MPXH6250A6T1's analog output. Fuel-injector flyback transients can otherwise inject >1 V spikes onto the 0.3-4.9 V signal and saturate the ADC for multiple conversion cycles. Oversample the ADC at 4 kHz and decimating-average to 1 kHz to recover sub-100 LSB resolution while still resolving 10 Hz boost-pressure transients.
The MPXH6250A6T1's on-chip temperature compensation is calibrated for 0 C to 85 C operation; mounting the 8-SOIC body directly against a cold-rail heatsink or away from the engine block both work for in-cabin designs. Under-hood installations must derate the accuracy by an additional 0.5% per 10 C above 85 C unless host-software second-order compensation is applied; confirm by reading the datasheet temperature-error curves and applying a polynomial in the ECU's runtime calibration. Avoid potting the package if the gel-coupled port is used.
Do not apply pressure exceeding 2x the maximum range (500 kPa absolute) to the axial port - the silicon diaphragm can plastically deform and shift the transfer function permanently. Also avoid kinking or restricting the inlet port line, which generates velocity-pressure errors that masquerade as MAP offsets in the ECU's fuel model. Finally, never share the sensor's 5 V supply with high-current loads (injectors, relays) without a series ferrite - a 200 mV load transient on VCC translates directly to a 184 mPa spurious pressure reading via the ratiometric output.
Thông tin tuân thủ
RoHS and lead-free compliance confirmed by NXP product page (https://www.nxp.com/part/MPXH6250A6). AEC-Q100 pedigree is family-level; specific automotive order codes in the MPXH6250A family carry full qualification. Halogen-free status not explicitly stated in the verified web data and is therefore listed as 'unknown'.
