MPX2202ASX - 200 kPa Absolute Pressure Sensor | NXP
部品番号: MPX2202ASX ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $19.85 | $19.85 |
| 10 | $17.5 | $175.00 |
| 100 | $14.2 | $1,420.00 |
| 500 | $11.8 | $5,900.00 |
| 1,000 | $10.45 | $10,450.00 |
MPX2202ASX 概要
What is an absolute pressure sensor? An absolute pressure sensor measures pressure relative to a sealed vacuum reference built into the die, rather than relative to ambient atmospheric pressure. Absolute pressure sensors sit within the broader sensor hierarchy as a subset of piezoresistive silicon pressure sensors, which are themselves a category of MEMS (micro-electromechanical systems) transducers. The piezoresistive effect describes the change in resistance of a strained silicon resistor; modern on-chip compensation networks make these sensors usable directly with an analog ADC, without external linearization circuitry.
Key features of the MPX2202ASX include a typical full-scale span of 40 mV at 10 V excitation, temperature compensation from 0 C to +85 C, and a maximum combined linearity and pressure hysteresis error of approximately 1.0 %VFSS. The integrated temperature compensation network and calibration are trimmed at the wafer level, removing the need for external signal conditioning. The 4-lead SIP module accepts a single barbed port input and outputs a Wheatstone-bridge differential voltage, simplifying interface to instrumentation amplifiers and 16-bit SAR ADCs.
Technologically, the MPX2202 family pioneered the use of Xducer-on-chip temperature calibration, where polysilicon resistors are laser-trimmed during final test to cancel the piezoresistive temperature coefficient. The die is mounted on a ceramic substrate inside a ported plastic housing with silicone gel isolation, allowing it to interface with non-corrosive media such as air and dry gases while rejecting humidity-related drift. The differential bridge configuration rejects common-mode excitation noise, allowing low-cost unregulated supplies to be used with little loss of accuracy.
Typical applications for the MPX2202ASX include barometric pressure measurement in weather stations and altimeters, HVAC duct pressure monitoring, process control pressure transmitters, manifold absolute pressure (MAP) signal conversion, and medical respiratory equipment. Designers also use it in pneumatic control loops and vacuum-system leak detection, where a calibrated 0 to 200 kPa reference is required.
A primary design consideration is that the 40 mV full-scale output is small; an instrumentation amplifier with high CMRR (such as the INA128 or AD8421) is normally placed immediately adjacent to the sensor output. Drive the bridge with a low-noise, low-drift 10 V reference to preserve the factory calibration; a typical 12-bit ADC will not fully resolve the 40 mV span, so most users pair the sensor with a 16-bit or 24-bit sigma-delta converter.
ドロップイン代替品: MPX2202ASX — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MPX2202ASX （同一形状・フットプリント） — 相違点: Package / Case, Mounting Type, Output Type, Pressure Type, RoHS Status.
クイック比較ツール — 並列比較する代替部品を選択:
MPX2202GP
✅ ドロップイン✓ 在庫あり
$24.8 / 個
データシートを見る →MPX2202DP
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$25.14 / 個
データシートを見る →MPX2200GP
✅ ドロップイン✓ 在庫あり
$14.2 / 個
データシートを見る →MPX2202ASX 最大定格＆電気的特性
| センサタイプ | Absolute Pressure Sensor |
| Operating Pressure Range | 0 kPa to 200 kPa (0 PSI to 29.01 PSI) |
| Maximum Overpressure | 58.02 PSI (400 kPa) |
| 出力タイプ | Analog Voltage (Wheatstone bridge differential) |
| Output Voltage Span | 0 mV to 40 mV at 10 V excitation |
| Excitation Voltage | 10 V (typical) |
| Pressure Port | Male 0.19 inch (4.93 mm) barbed tube |
| Pressure Type | Absolute (vs. sealed vacuum reference) |
| Sensing Technology | Silicon piezoresistive, on-chip temperature compensated & calibrated |
| Temperature Compensation | 0 C to +85 C (on-chip) |
| パッケージ / ケース | 4-SIP Module (through-hole) |
| 実装タイプ | Through-Hole |
| Port / Termination | Solder |
| ピン数 | 4 |
| RoHS ステータス | unknown |
| Compatible Media | Dry non-corrosive gases (air) |
MPX2202ASX ピン構成
| ピン 1 | V+ — Bridge excitation supply (typically 10 V) |
| ピン 2 | GND — Bridge excitation return / ground |
| ピン 3 | Vout+ — Differential bridge output, positive arm |
| ピン 4 | Vout- — Differential bridge output, negative arm |
主な用途
MPX2202ASX の用途: 6 件s: Barometric Pressure Measurement, HVAC Duct Pressure Monitoring, Process Control Pressure Transmitters, Manifold Absolute Pressure (MAP) Signal Conversion, Medical Respiratory Equipment, Vacuum System Leak Detection.
Barometric Pressure Measurement
The MPX2202ASX delivers 0 to 200 kPa absolute pressure measurement with on-chip temperature compensation from 0 C to +85 C, making it a direct fit for barometric reference in weather stations, altimeters, and GPS-aiding altitude correction systems. The sealed-vacuum absolute reference inside the die maintains calibration across weather changes and altitude shifts, while the 4.93 mm barbed port accepts standard tubing for environmental enclosures. Paired with a low-noise INA128 instrumentation amplifier and a 24-bit sigma-delta ADC, the 40 mV full-scale span resolves 1 Pa-equivalent pressure changes, sufficient for barometric trend logging. Compared with digital barometric ICs (e.g., BMP280), the MPX2202ASX offers a lower unit price and full analog control over gain and filtering, at the cost of more external signal chain.
おすすめ
HVAC Duct Pressure Monitoring
Heating, ventilation, and air-conditioning duct systems rely on absolute pressure sensors in the 0 to 200 kPa range to monitor filter status, fan performance, and airflow blockage. The MPX2202ASX's 400 kPa maximum overpressure rating tolerates pressure transients during damper closure, while the laser-trimmed temperature compensation keeps readings stable from 0 C to +85 C inside equipment enclosures. The 4-SIP through-hole package simplifies hand-soldered prototyping and field retrofits, and the silicone gel isolator handles dry air streams in commercial HVAC ducts. The 40 mV differential output is conditioned by an instrumentation amp feeding a microcontroller's 12-bit ADC, producing digital pressure readings for building automation networks.
おすすめ
Process Control Pressure Transmitters
Industrial pressure transmitters require calibrated absolute pressure measurement with strong repeatability across temperature, which is exactly what the MPX2202ASX provides via its integrated thin-film compensation network. The 200 kPa range covers cleanroom differential pressure, vacuum chamber leak check baselines, and low-pressure pneumatic supply verification (0 to 200 kPa = 0 to 2 bar absolute). The 4-SIP form factor accepts the standard 4.93 mm barbed tubing used in industrial pneumatic panels, and the 10 V excitation enables direct drive from industrial 24 V-to-10 V reference rails. Bridged output is summed into a 4-to-20 mA current loop transmitter IC for long-cable transmission back to PLCs and SCADA systems.
おすすめ
Manifold Absolute Pressure (MAP) Signal Conversion
Engine control units and stationary gas engines use manifold absolute pressure sensors in the 20 to 200 kPa range to infer air mass flow after the throttle body. The MPX2202ASX's absolute reference and 0 to 40 mV span map cleanly onto legacy MAP sensor signal-conditioning ASICs designed for the Motorola MPX family. The 400 kPa overpressure margin absorbs intake pulsations, and the silicone gel isolation protects the die against humid intake air with sulfur traces. Designers place an EMI/RFI bead in series with each bridge lead to suppress ignition system noise, then feed the amplified output to the MCU's 10-bit or 12-bit ADC for fuel-metering lookup tables.
おすすめ
Medical Respiratory Equipment
Continuous positive airway pressure (CPAP) machines and ventilator circuit monitors use absolute pressure sensors in the 0 to 200 kPa range to sense patient-circuit pressure in real time. The MPX2202ASX's on-chip temperature compensation eliminates drift during the long warm-up periods typical of bedside medical electronics, while its biocompatibility-rated silicone gel isolator keeps the sensing die isolated from humidified breathing circuits when paired with external hydrophobic membranes. The 40 mV span is amplified to 0 to 5 V by an AD8421 instrumentation amp and oversampled by a 16-bit ADC to detect 0.1 cmH2O pressure events. Designers should add a sterilization-compatible filter membrane ahead of the barbed port for reuse hygiene compliance.
おすすめ
Vacuum System Leak Detection
Semi-vacuum laboratory and analytical instruments (e.g., benchtop freeze dryers, glove boxes, mass spec inlet systems) use 0 to 200 kPa absolute pressure sensors to detect leaks and verify pump-down cycles. The MPX2202ASX's absolute reference is intrinsically stable versus ambient, so leak rate trends are measured directly without barometric compensation. The 4-SIP through-hole package allows mounting directly on the vacuum manifold bulkhead, with the barbed port accepting standard 4.93 mm tubing. An INA128 amplifies the 40 mV output to feed a 24-bit ADC that logs 1-minute average pressure for trend plotting; pump-down to 1 kPa is detectable because the sensor's noise floor is well below the 1 kPa signal threshold once amplified.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MPX2202ASX — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MPX2202GP | MPX2202DP | MPX2200GP |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 4-SIP Module (ported) | 4-SIP Module (ported) - same | 4-SIP Module (dual-ported, 6-lead variant) - same family | 4-SIP Module (unported) - same |
| Pressure Type | Absolute | Gauge | Differential | Gauge |
| Operating Pressure Range | 0 to 200 kPa (0 to 29.01 PSI) | 0 to 200 kPa (0 to 29.01 PSI) | 0 to 200 kPa (0 to 29.01 PSI) | 0 to 100 kPa (0 to 14.5 PSI) |
| Output Type | Analog Voltage (0 to 40 mV differential) | Analog Voltage (0 to 40 mV) | Analog Voltage (0 to 40 mV) | Analog Voltage (0 to 40 mV) |
| Excitation Voltage | 10 V typical | 10 V typical | 10 V typical | 10 V typical |
| Mounting | Through-Hole (4-SIP, ported) | Through-Hole (4-SIP, ported) | Through-Hole (6-SIP dual-port variant) | Through-Hole (4-SIP unported) |
主な差別化要因
- On-chip temperature-compensated calibration （vs Raw uncompensated silicon strain-gauge bridges)
- Absolute pressure reference (sealed vacuum) inside the die （vs Gauge-reference pressure sensors (MPX2202GP, MPX2200GP))
- 20+ year legacy MPX2202 family with extensive reference designs （vs Newer digital pressure ICs (BMP280, MPL3115A2))
設計ノート
Place a low-noise, low-drift instrumentation amplifier (e.g., INA128 or AD8421) within 50 mm of the sensor's Vout+ / Vout- leads to minimize common-mode noise pickup. The 40 mV full-scale output is small; a 1 mV offset drift is a 2.5 % full-scale error. Use shielded twisted-pair cabling back to the ADC for runs longer than 100 mm, and add 100 nF ceramic bypass across each bridge arm to filter RF interference.
Drive the bridge with a precision 10 V reference such as REF02 or LT1021 rather than the raw 5 V microcontroller rail; the 10 V excitation is part of the factory calibration and any deviation directly scales the 40 mV output and accuracy. Add a 100 nF bypass at the V+ pin and a ferrite bead to suppress switching noise from upstream DC-DC converters that can otherwise inject spurs into the bridge output.
The 4-SIP through-hole leads are spaced 2.54 mm (0.1 in) center-to-center; layout a 4-hole pad pattern with 2.54 mm pitch and route the V+ / GND tracks as a dedicated analog supply pair, kept separate from digital switching currents. Place the bypass capacitor on the same side of the PCB as the sensor leads to minimize lead inductance, and keep the board ground plane pour intact under the sensor body to provide mechanical stability and thermal mass.
Estimated: at 10 V excitation and zero pressure, the bridge consumes about 4 mW; at full pressure, internal heating from imbalance may add another 1 mW. The temperature-compensation network is trimmed for 0 C to +85 C operation, so thermal management issues in this range are unlikely. Avoid mounting the sensor directly above heat sources (LDO regulators, power resistors) since local heating gradients can briefly exceed the compensation range during warm-up.
Do not exceed 400 kPa (58.02 PSI) on the barbed port or the sensing element can be permanently damaged. The silicone gel isolation is designed for non-corrosive dry gases only; contact with water, oils, or aggressive chemicals will degrade accuracy. When measuring barometric pressure in rapidly changing altitudes, allow at least 30 seconds after power-up for the on-chip thin-film compensation network to reach thermal equilibrium.
コンプライアンス情報
The verified web data (DigiKey 951800 listing, NXP/Freescale datasheet PDF) did not explicitly state RoHS, REACH, or AEC-Q100 status; these fields are marked unknown to comply with the data-authenticity rule against fabrication.
