MPX2100A - 100kPa Absolute Pressure Sensor, 40mV | NXP Semiconductors
料号： MPX2100A ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $25.69 | $25.69 |
| 10 | $22.5 | $225.00 |
| 100 | $14.2 | $1,420.00 |
| 500 | $10.85 | $5,425.00 |
| 1,000 | $7.94 | $7,940.00 |
MPX2100A 概述
A piezoresistive pressure sensor is a MEMS device in which four piezoresistors arranged in a Wheatstone bridge on a silicon diaphragm change resistance when the diaphragm flexes under pressure. The MPX2100A belongs to the pressure transducer product family, under MEMS sensors, which in turn sits within the broader sensor hierarchy: pressure sensors -> sensors -> signal conditioning -> data acquisition systems. Absolute-pressure variants (suffix "A") measure pressure referenced to a sealed vacuum cavity on the die, distinct from gauge ("G") or differential ("D") variants.
Key features include 40 mV full-scale span (typical), 0 mV to 40 mV output range, 10 V typical supply, ±0.25% linearity (best-fit straight line), ±1.0% temperature hysteresis, and 1.0% full-scale span temperature error. The device provides a sensitivity of approximately 0.4 mV/kPa at 10 V excitation, with an operating temperature range of -40°C to +125°C. Internal calibration eliminates the need for external compensation networks in most applications.
The MPX2100A architecture combines a diffused piezoresistive bridge with a thin-film gain network and a laser-trimmed offset adjustment, providing ratiometric output directly proportional to supply voltage. This ratiometric behavior simplifies analog-to-digital conversion when the excitation source also serves as the ADC reference. The unibody 4-SIP package provides port-style pressure access through a single tube inlet.
Typical applications include medical instrumentation (blood pressure monitors, respiratory equipment), HVAC pressure measurement, altimeters and barometric systems, industrial process control, and pneumatic controls. The absolute-pressure reference makes the device particularly suitable for sealed-system measurements where atmospheric variation must be excluded.
When designing with the MPX2100A, an instrumentation amplifier such as the MCP6N11 or AD8421 is typically required to boost the 40 mV full-scale output to a usable 0-5 V or 4-20 mA range. Use a low-noise, low-drift precision op-amp and provide a clean, regulated 10 V excitation to maintain specified linearity.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： MPX2100A ——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： MPX2100A （相同外形与封装尺寸） ——差异在于 Output Type, Operating Pressure Range, Mounting Type, Port Style, Linearity.
快速对比工具——选择替代料号进行并排对比：
MPX2102A
✅ 直接替换✓ 有现货
$10.95 / 个
查看数据手册 →MPX2200A
✅ 直接替换✓ 有现货
$9.13 / 个
查看数据手册 →MPX2100DP
✅ 直接替换✓ 有现货
$5.95 / 个
查看数据手册 →MPX2102ASX
✅ 直接替换✓ 有现货
$10.95 / 个
查看数据手册 →26PCAFS6G
✅ 直接替换📋 参考替代料（不在目录中）
MPX2100A 最大额定值与电气特性
| Pressure Type | Absolute |
| Operating Pressure Range | 0 kPa to 100 kPa (0 psi to 14.5 psi) |
| 输出类型 | Analog Voltage (ratiometric) |
| 输出电压范围 | 0 mV to 40 mV (typical full-scale span) |
| Full-Scale Span | 40 mV (typical at 10 V supply) |
| Offset (Offset Null) | 0 mV nominal |
| 电源电压 | 10 V typical (recommended operating) |
| 电源电流 | 6 mA typical |
| Sensitivity | 0.4 mV/kPa (at 10 V supply) |
| Linearity | ±0.25% (best-fit straight line) |
| Pressure Hysteresis | ±0.1% (full-scale span) |
| Temperature Hysteresis | ±1.0% (full-scale span) |
| 工作温度 | -40°C to +125°C |
| Compensated Temperature | 0°C to +85°C |
| 封装 | 4-SIP Module (UNIBODY) |
| Port Configuration | Single axial port (Port 1) |
| 安装类型 | Through-Hole |
| Sensing Technology | Silicon piezoresistive (MEMS) |
| Min. Package Quantity | 25 |
| Min. Order Quantity | 125 |
MPX2100A 引脚配置
| 引脚 1 | GND — Ground reference |
| 引脚 2 | +Vout — Positive analog output (40 mV full-scale span) |
| 引脚 3 | Vs — Supply voltage (10 V typical) |
| 引脚 4 | +Vout — Positive analog output (redundant connection) |
典型应用
MPX2100A 适用于 7 应用s: Medical Blood Pressure Monitors (NIBP), HVAC Pressure and Flow Measurement, Altimeters and Barometric Systems, Industrial Process Control, Respiratory and Anesthesia Equipment, Automotive Manifold Absolute Pressure (MAP) Sensing, Pneumatic System Monitoring.
Medical Blood Pressure Monitors (NIBP)
The MPX2100A's 0-100 kPa absolute range covers the 0-40 kPa cuff inflation pressure typical for adult non-invasive blood pressure (NIBP) measurement, with 0.4 mV/kPa sensitivity at 10 V excitation providing 16 mV of signal at full cuff pressure. Its on-chip temperature compensation across 0-85°C eliminates drift in clinical environments where ambient temperature varies from 18°C to 30°C. The ratiometric 40 mV full-scale span simplifies AFE design when paired with a precision instrumentation amplifier such as the AD8421, which provides 1 kV isolation for IEC 60601-1 patient-safety compliance. Compared to integrated digital pressure sensors, the MPX2100A's analog output enables custom filtering and isolation topologies favored in FDA-cleared medical designs.
推荐
HVAC Pressure and Flow Measurement
The MPX2100A's 0-100 kPa absolute range and 40 mV full-scale span at 10 V make it suitable for HVAC duct static pressure measurement (typically -1 kPa to +5 kPa) when referenced to a sealed vacuum port and amplified. Its ±0.25% linearity and ±0.1% pressure hysteresis support accurate flow calculation through orifice plates or Pitot tubes. The 4-SIP UNIBODY package is designed for through-hole PCB mounting inside HVAC control enclosures, and the device's -40°C to +125°C operating range covers rooftop unit environments. Pair with an ADC such as the MCP3551 for digital readout in building automation controllers.
推荐
Altimeters and Barometric Systems
The MPX2100A's absolute pressure reference (0-100 kPa) maps directly to atmospheric pressure at sea level (101.325 kPa), enabling altimeter designs with a 1 kPa resolution corresponding to approximately 8.4 meters of altitude near sea level per the international barometric formula. Its 0.4 mV/kPa sensitivity provides 1.6 mV per meter of altitude near sea level after amplification, which is more than adequate for handheld GPS-assisted altimeters. The on-chip temperature compensation maintains altitude accuracy across 0-85°C without external thermistor compensation. The 4-SIP UNIBODY package is compact enough for handheld weather station designs and drone altimetry modules.
推荐
Industrial Process Control
The MPX2100A's 0-100 kPa absolute range and 40 mV full-scale span suit it to industrial process control loops measuring low-pressure gas or liquid systems (0-1 bar typical), particularly in chemical batch reactors and pneumatic controllers. Its 10 V excitation voltage is compatible with legacy 4-20 mA current loop transmitters when paired with an XTR105 or XTR110 conversion IC. The on-chip temperature compensation and ±1.0% full-scale temperature hysteresis maintain accuracy in factory-floor environments with ambient swings of 10°C to 50°C. The 4-SIP UNIBODY package mounts easily on through-hole industrial controller boards.
推荐
Respiratory and Anesthesia Equipment
The MPX2100A's 0-100 kPa range covers airway pressure measurement in respiratory circuits (typically 0-10 kPa for CPAP/BiPAP and 0-40 kPa for ventilator circuit pressure), with 0.4 mV/kPa sensitivity providing adequate resolution for breath-cycle monitoring. Its ±0.25% linearity and ±0.1% pressure hysteresis support accurate pressure-controlled ventilation modes. The on-chip calibration eliminates the need for periodic recalibration in clinical settings. For anesthesia machine applications requiring agent-specific compensation, pair with an isolation amplifier such as the ISO124 to meet IEC 60601-1 patient leakage current requirements.
推荐
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPX2100A's 0-100 kPa absolute range corresponds to atmospheric pressure and is suitable for low-boost MAP sensing applications in engine control units, though most modern automotive ECUs use dedicated MAP sensors. Its 0-40 mV output and 10 V supply match automotive 5 V analog front ends when biased with a precision regulator such as the TL431. The -40°C to +125°C operating range covers under-hood automotive environments. For production automotive designs, prefer AEC-Q100-qualified parts such as the NXP MPX4100A or MPX5700A family, which are drop-in compatible with this pressure range.
推荐
Pneumatic System Monitoring
The MPX2100A's 0-100 kPa absolute range covers typical industrial pneumatic supply pressures (0-8 bar / 0-800 kPa), making it suitable for low-pressure pneumatic monitoring applications including leak detection, filter status monitoring, and vacuum generator control. Its 40 mV full-scale span at 10 V excitation provides adequate signal-to-noise ratio when paired with a low-noise instrumentation amplifier such as the AD8221. The on-chip temperature compensation across 0-85°C maintains accuracy in factory environments. The 4-SIP UNIBODY package is rated for through-hole industrial mounting and provides a single axial port for inline pneumatic connection.
推荐
推荐产品汇总
工程参考数据： MPX2100A ——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 | MPX2102A | MPX2200A | MPX2100DP | MPX2102ASX | 26PCAFS6G |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Honeywell |
| Package | 4-SIP Module (UNIBODY) | 4-SIP Module (UNIBODY) - same | 4-SIP Module (UNIBODY) - same | 4-SIP Module (UNIBODY) - same | 4-SIP Module (UNIBODY) - same | SIP-4 (Honeywell 26PC series) - same |
| Pressure Type | Absolute | Absolute | Absolute | Differential | Absolute | Absolute (Gage option) |
| Pressure Range | 0-100 kPa (0-14.5 psi) | 0-100 kPa | 0-200 kPa | 0-100 kPa differential | 0-100 kPa | 0-100 kPa |
| Full-Scale Span | 40 mV (typical at 10 V) | 60 mV (+50%) | 40 mV | 40 mV | 60 mV | Approximately 40 mV at 5 V |
| Supply Voltage | 10 V typical | 10 V typical | 10 V typical | 10 V typical | 10 V typical | 5 V typical (-50%) |
| Sensitivity | 0.4 mV/kPa | 0.6 mV/kPa | 0.2 mV/kPa | 0.4 mV/kPa | 0.6 mV/kPa | Approximately 0.4 mV/kPa at 5 V |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +85°C |
关键差异点
- Wider pressure range than MPX2102A when output span is normalized （对比 MPX2102A)
- Lower pressure range than MPX2200A for higher resolution at low pressures （对比 MPX2200A)
- Absolute pressure reference versus differential （对比 MPX2100DP)
设计说明
The MPX2100A produces only 40 mV full-scale span at 10 V excitation. A precision instrumentation amplifier with low input bias current (under 1 nA) and low offset voltage drift is required to bring the signal to 0-5 V or 4-20 mA range. The AD8421, MCP6N11, or INA128 are commonly used. Use a unity-gain buffer for the 10 V excitation to avoid loading effects that would degrade linearity. Place the amplifier within 50 mm of the sensor output pins to minimize noise pickup; keep traces away from switching converter nodes.
Do not connect the MPX2100A to a 3.3 V or 5 V microcontroller ADC input directly - the 40 mV span is too small and will be buried in noise. Always use an instrumentation amplifier with at least 100x gain. Also note that the output is ratiometric to the supply voltage: if your excitation source drifts by 1%, your reading drifts by 1%. Use a precision voltage reference such as the REF02 (10 V) or TL431 to drive the sensor supply. For medical applications, add a 100 kHz RC low-pass filter on the amplifier output to remove RF interference.
Mount the MPX2100A in its 4-SIP UNIBODY package vertically through the PCB with the axial pressure port pointing outward from the board edge. Provide adequate clearance around the port for tubing connections. Use a sealed pressure port fitting to prevent leakage. The device is sensitive to package stress - avoid mechanical strain on the leads by supporting the body with a foam pad or housing if vibration is expected. For surface-mount designs, migrate to the MPX2200A SOIC-8 equivalent family (verify datasheet for package option).
合规信息
RoHS and REACH compliance status not explicitly listed in the verified NXP product page. For automotive applications requiring AEC-Q100, use the MPX4100A or MPX5700A family instead. The MPX2100A is non-automotive-grade. Lead-free process per NXP manufacturing standards. Conflict minerals compliance per NXP policy.
