MPXH6300A6U - 20-304kPa Absolute Pressure Sensor | STMicroelectronics
料号： MPXH6300A6U ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $13.5 | $13.50 |
| 10 | $12.15 | $121.50 |
| 100 | $10.8 | $1,080.00 |
| 500 | $9.45 | $4,725.00 |
| 1,000 | $8.1 | $8,100.00 |
MPXH6300A6U 概述
An absolute pressure sensor is a MEMS device that produces an output proportional to pressure referenced to a sealed internal vacuum cavity, rather than to ambient atmosphere. Absolute sensors sit one tier below gauge and differential pressure sensors in the transducer hierarchy (absolute -> gauge -> differential) and one tier above raw piezoresistive silicon strain gauges. The MPXH6300A6U sits at the top of the NXP/ST MPXHxxxx family for high-pressure (up to ~3 atm) industrial and automotive applications such as manifold absolute pressure (MAP) sensing and barometric correction.
Key differentiating features include on-chip bipolar op-amp signal conditioning, thin-film laser-trimmed resistor networks for temperature compensation, and a high-temperature operating range of -40 C to +125 C. The integrated ASIC eliminates the need for external amplification or calibration circuitry, allowing direct connection to an ADC input or microcontroller. The 5.0 V nominal supply, 0.3-4.9 V output swing, and ratiometric architecture simplify MCU firmware scaling, since Vout/Vin tracks the pressure ratio directly.
Technically, the device uses a piezoresistive transducer element whose Wheatstone bridge resistance changes with applied pressure, followed by a precision chopper-stabilized instrumentation amplifier. The sensor is calibrated across 0 to 85 C with second-order temperature correction, achieving a typical accuracy of better than +/-1.5% VFSS. Power consumption is approximately 10 mA from a 5 V supply, and the SSOP-8 package provides a stable platform for surface-mount assembly.
Typical applications include automotive MAP sensors, barometric altimeters, industrial process control, HVAC pressure monitoring, and weather station instrumentation. It is well-suited where a calibrated, ratiometric analog output is preferred over a digital I2C/SPI interface. Design considerations include using a stable 5.0 V supply to preserve ratiometric accuracy, providing adequate PCB isolation from vibration, and adding ESD protection at the sensor port for harsh environments.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the MPXH6300A6U that go beyond the manufacturer datasheet to help engineers select, source, and implement this absolute pressure sensor.
直接替换替代料： MPXH6300A6U ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MPXH6300A6U （相同外形与封装尺寸） ——差异在于 Accuracy, Output Type, Package, Port Style, Supply Voltage.
快速对比工具——选择替代料号进行并排对比：
MPXH6300A6
✅ 直接替换📋 参考替代料（不在目录中）
MPXH6250A6T1
✅ 直接替换✓ 有现货
$6.55 / 个
查看数据手册 →MPXH6300A6U
✅ 直接替换✓ 有现货
$8.1 / 个
查看数据手册 →MPXH6250A6T1
✅ 直接替换✓ 有现货
$6.55 / 个
查看数据手册 →MPXHZ6250A6U
✅ 直接替换📋 参考替代料（不在目录中）
MPXH6300A6U 最大额定值与电气特性
| Pressure Type | Absolute |
| Operating Pressure Range | 20 kPa to 304 kPa (2.9 PSI to 44.09 PSI) |
| 输出电压范围 | 0.3 V to 4.9 V |
| Sensitivity | 16.2 mV/kPa (typical) |
| 电源电压 | 4.74 V to 5.46 V (5.0 V nominal) |
| 电源电流 | 10 mA (maximum) |
| 输出类型 | Analog voltage, ratiometric to Vcc |
| 工作温度 | -40 C to +125 C |
| Compensated Temperature Range | 0 C to 85 C |
| Accuracy | +/-1.5% VFSS (typical, over compensated range) |
| 封装 | 8-SOIC (0.295 inch / 7.50 mm wide body) |
| 安装类型 | Surface Mount |
| Port Configuration | Single axial port, top side |
| Signal Conditioning | On-chip bipolar op-amp + thin-film resistor network |
| Technology | Piezoresistive MEMS with integrated ASIC |
| RoHS 状态 | Compliant |
MPXH6300A6U 引脚配置
| 引脚 1 | Vcc — 5.0 V supply voltage |
| 引脚 2 | GND — Ground |
| 引脚 3 | Vout — Analog pressure output (0.3-4.9 V) |
| 引脚 4 | Trim — Factory calibration (leave floating in production) |
| 引脚 5 | NC — Not connected (per datasheet) |
| 引脚 6 | NC — Not connected (per datasheet) |
| 引脚 7 | NC — Not connected (per datasheet) |
| 引脚 8 | NC — Not connected (per datasheet) |
典型应用
MPXH6300A6U 适用于 7 应用s: Automotive Manifold Absolute Pressure (MAP) Sensing, Barometric Pressure and Altitude Measurement, Industrial Process Pressure Monitoring, HVAC System Pressure Verification, Weather Station Instrumentation, Medical Respiratory Equipment, Pneumatic System Monitoring.
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPXH6300A6U's 20-304 kPa absolute pressure range is a direct match for naturally aspirated and moderately boosted gasoline engines, where manifold pressures span vacuum at idle (~30 kPa) to boost pressure at wide-open throttle (~250 kPa). Its 16.2 mV/kPa sensitivity provides ~0.5 kPa resolution when digitized by a 10-bit ADC, sufficient for closed-loop fuel trim and ignition timing. The ratiometric 0.3-4.9 V output tracks Vcc variations, eliminating the need for a precision reference. Compared to digital I2C sensors, this analog output avoids bus contention during engine cranking voltage transients.
推荐
Barometric Pressure and Altitude Measurement
Although optimized for higher pressures, the MPXH6300A6U's 20 kPa lower bound covers the barometric range (sea level ~101 kPa down to ~30 kPa at 9 km altitude). The temperature-compensated analog output makes it ideal for portable weather stations and drone altimeters where a 5 V supply rail is already present. The -40 to +125 C operating range suits outdoor weather exposure, and the ratiometric output simplifies firmware scaling on microcontrollers without a precision ADC reference. Pair it with a 5 V LDO and a low-pass RC filter to reduce pressure-port noise from wind gusts.
推荐
Industrial Process Pressure Monitoring
Factories monitoring compressed air, hydraulic lines, or vacuum processes benefit from the MPXH6300A6U's calibrated analog output, which drops directly into 4-20 mA current loop transmitters or PLC analog input modules. The 304 kPa upper limit covers most low-pressure industrial applications, while the ratiometric output rejects supply noise common in motor-drive cabinets. With -40 to +125 C operation and on-chip signal conditioning, the sensor eliminates the maintenance burden of periodic recalibration in plant environments.
推荐
HVAC System Pressure Verification
Heating, ventilation, and air conditioning (HVAC) systems use pressure sensors to verify duct airflow, filter loading, and refrigerant line pressures. The MPXH6300A6U's 20-304 kPa range covers both duct static pressure (typically 0-2 kPa) and refrigerant high-side pressures in residential heat pumps. Its analog ratiometric output integrates seamlessly with HVAC controller boards that use 5 V supply rails and 10-bit ADC channels. The wide temperature range accommodates rooftop unit installations.
推荐
Weather Station Instrumentation
Professional and hobbyist weather stations use absolute pressure sensors for barometric trend reporting. The MPXH6300A6U's calibrated 20 kPa lower bound reaches well into the high-altitude regime (>8 km), while the ratiometric output simplifies data acquisition. The integrated temperature compensation from 0 to 85 C covers most temperate-climate deployments, eliminating the need for software compensation tables. Pair with a weatherproof enclosure and Gore-Tex vent to protect the sensor port from direct rain ingress.
推荐
Medical Respiratory Equipment
Respiratory therapy devices such as CPAP machines and ventilators require accurate absolute pressure sensing in the 0-50 kPa range to monitor patient airflow and circuit pressure. The MPXH6300A6U's on-chip signal conditioning and ratiometric output simplify FDA/IEC 60601-compliant designs where isolation barriers and noise immunity are critical. The wide 5 V supply tolerance accommodates battery-powered portable ventilators. For low-pressure CPAP use, however, verify the 20 kPa lower bound meets the application's minimum pressure specification.
推荐
Pneumatic System Monitoring
Factory pneumatic systems operating at 0-100 psi (~0-700 kPa) use pressure sensors to monitor compressor output, line pressure, and actuator feedback. The MPXH6300A6U covers most low-pressure pneumatic applications up to ~44 PSI, with the ratiometric output eliminating the need for precision voltage references in noisy motor-control environments. The on-chip ASIC reduces BOM cost compared to raw piezoresistive bridges that require external amplification. For higher-pressure systems (>50 PSI), choose a sensor with a wider range such as the MPX5700 series.
推荐
推荐产品汇总
工程参考数据： MPXH6300A6U ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MPXH6300A6 | MPXH6250A6T1 | MPXH6300A6U | MPXH6250A6T1 | MPXHZ6250A6U |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 8-SOIC (7.50 mm wide) | 8-SOIC (7.50 mm wide) - same | 8-SOIC (7.50 mm wide) - same | 8-SOIC (7.50 mm wide) - same | 8-SOIC (7.50 mm wide) - same | 8-SOIC (7.50 mm wide) - same |
| Pressure Range | 20-304 kPa | 20-304 kPa | 20-250 kPa | 20-304 kPa | 20-250 kPa | 20-250 kPa |
| Max Pressure | 44.09 PSI | 44.09 PSI | 36.26 PSI | 44.09 PSI | 36.26 PSI | 36.26 PSI |
| Output Voltage Range | 0.3-4.9 V | 0.3-4.9 V | 0.3-4.9 V | 0.3-4.9 V | 0.3-4.9 V | 0.3-4.9 V |
| Supply Voltage | 5.0 V (4.74-5.46 V) | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| Operating Temperature | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +125 C | -40 to +125 C |
关键差异点
- Wider pressure range than MPXH6250A6T1 （对比 MPXH6250A6T1)
- Available from both STMicroelectronics and NXP for dual sourcing （对比 MPXH6300A6U (NXP))
- On-chip signal conditioning eliminates external components （对比 Raw piezoresistive bridge sensors)
- Wide temperature operating range （对比 Commercial-grade pressure sensors)
设计说明
Use a stable, low-noise 5.0 V supply to preserve the ratiometric accuracy of the MPXH6300A6U. Place a 100 nF decoupling capacitor as close as possible to the Vcc pin and a 1 uF bulk capacitor on the supply rail. Switching regulator ripple directly couples into Vout through the ratiometric transfer function, so an LDO post-regulator (e.g., TPS7A4701) is recommended for precision applications.
Keep the sensor port isolated from PCB vibration sources such as motors, fans, and transformers. Mount the device on a small 'floating' PCB island connected to the main board with a flexible silicone tube or short pneumatic line. Keep high-current traces away from the analog output line, and provide a ground guard ring around Vout to reduce capacitive pickup.
Route the Vout trace as a short, guarded analog line directly to the MCU ADC input. Add a 100 ohm series resistor and 100 nF capacitor to ground at the ADC input to form a 159 kHz low-pass filter that rejects MHz-range noise from switching regulators. Avoid running Vout parallel to high-speed digital lines (SPI, I2C clock, PWM) to minimize crosstalk.
Estimated: For a 10-bit ADC with 5 V reference, the LSB is 4.88 mV, giving ~0.30 kPa per bit at the 16.2 mV/kPa sensitivity. For better resolution, use a 12-bit ADC (0.076 kPa/LSB) or oversample with averaging. Software averaging of 16 samples reduces noise by ~4x and improves effective resolution to ~14 bits without external filtering.
Do not connect the Trim pin (pin 4) to ground or Vcc - it is reserved for factory calibration and should be left floating in production. Exceeding 304 kPa absolute can permanently damage the sensor; for higher-pressure applications choose the MPX5700 series. The device is sensitive to airflow over the port - enclose it in a still-air cavity to avoid wind-induced reading fluctuations in weather station deployments.
合规信息
RoHS compliant per STMicroelectronics product page. Lead-free packaging. Not AEC-Q100 qualified as a standalone component (automotive qualification done at the ECU level). Halogen-free status not explicitly stated in retrieved web data.
