MMA621010AEG - ±100g Dual-Axis Analog Accelerometer | NXP
部品番号: MMA621010AEG ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.95 | $119.50 |
| 100 | $11.08 | $1,108.00 |
| 500 | $10.49 | $5,245.00 |
| 1,000 | $9.91 | $9,910.00 |
MMA621010AEG 概要
An accelerometer is a micro-electromechanical sensor (MEMS) that measures proper acceleration along one or more axes, converting mechanical inertial force into an electrical signal proportional to g-force. Within the sensor hierarchy, an accelerometer belongs to the inertial sensor family, which also includes gyroscopes and IMUs (inertial measurement units); it sits at the lowest tier of motion-sensing signal chain components, downstream of the mechanical event and upstream of an ADC or microcontroller for digital conversion.
Key features of the MMA621010AEG include integrated digital signal processing for filter, trim, and data-formatting functions; over-damped transducer response to suppress resonance-induced errors; and a -40 °C to +105 °C operating range for automotive underhood and chassis deployments. The 20-pin SOIC wide package simplifies PCB layout compared to smaller LGA footprints used in many competing parts.
Technically, the device combines a surface-micromachined capacitive sense element with a sigma-delta modulation stage and decimation filter, yielding a flat ±100 g dynamic range with deterministic g-to-voltage transfer. Internal factory calibration sets zero-g offset and sensitivity, so most applications can omit external compensation. The dual-axis X-Y orientation simplifies system BOM by replacing two single-axis parts.
Typical applications include airbag deployment sensors, electronic stability control (ESC) rollover detection, vehicle dynamic control (VDC) modules, anti-lock braking systems (ABS), industrial vibration monitoring, and crash recorders. The 4.68 mV/V/g sensitivity at 5 V yields about 23.4 mV/g, which is convenient for direct ADC sampling without additional amplification.
When designing with this part, allocate at least 10 mm² of copper ground pour beneath the package thermal/epad to manage self-heating and to reduce coupled electrical noise. Use a low-impedance analog supply with a 100 nF ceramic bypass within 5 mm of the VDD pin; avoid routing digital switching signals across the die shadow to prevent coupled disturbance into the analog output.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes that are not aggregated in the manufacturer datasheet, providing engineers a single-decision resource for selecting and sourcing the MMA621010AEG.
ドロップイン代替品: MMA621010AEG — 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。
クイック比較ツール — 並列比較する代替部品を選択:
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MMA621010AEG 最大定格＆電気的特性
| センサタイプ | Accelerometer, dual-axis (X, Y) |
| Axis | X, Y |
| Acceleration Range | ±100 g |
| 出力タイプ | Analog voltage |
| Sensitivity | 4.68 mV/V/g (typical, 5 V supply) |
| 電源電圧 | 3.3 V or 5 V single supply |
| Bandwidth | 3 kHz (per DigiKey listing) |
| 動作温度 | -40 °C to +105 °C |
| パッケージ | 20-pin SOIC Wide (SOIC-20) |
| 実装タイプ | Surface Mount |
| Output Format | Analog, ratiometric to VDD |
| Sensor Technology | MEMS, silicon capacitive, surface-micromachined |
| Signal Conditioning | Integrated DSP for filtering, trim, data formatting |
| Damping | Over-damped transducer response |
| Lead Free / RoHS | Lead Free, RoHS Compliant |
| Application Grade | Automotive / Industrial |
MMA621010AEG 20-pin soic wide (soic-20) ピン配置ガイド
MMA621010AEG (20-pin soic wide (soic-20) パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: MMA621010AEG.
詳細は データシート をご参照ください。
主な用途
MMA621010AEG の用途: 3 件s: Airbag Deployment Sensing, Electronic Stability Control (ESC) / Rollover Detection, Anti-Lock Braking System (ABS) Wheel-Cylinder Monitoring.
Airbag Deployment Sensing
The MMA621010AEG is well suited to airbag crash-sensor modules because its ±100 g dual-axis range captures the high-magnitude deceleration pulse that occurs at impact. The 4.68 mV/V/g sensitivity at 5 V delivers roughly 23.4 mV/g, which a host ECU ADC can sample directly without an external amplifier. The over-damped transducer response prevents resonant ringing that would otherwise corrupt the crash-decision algorithm in the first milliseconds after impact. Placed at the vehicle crush zone, the sensor feeds X (longitudinal) and Y (lateral) channels to the airbag controller, where dual-axis coverage enables discrimination of frontal, oblique, and side impacts. The integrated DSP filtering reduces host processing load, freeing MCU cycles for deployment arbitration. Operating from -40 °C to +105 °C, the part tolerates underhood and passenger-compartment thermal environments without active cooling.
おすすめ
Electronic Stability Control (ESC) / Rollover Detection
For ESC and rollover-sensing modules, the MMA621010AEG supplies the high-g lateral acceleration channel needed to detect vehicle skid and tilt events. Its ±100 g range comfortably captures aggressive cornering and emergency-lane-change dynamics that exceed the dynamic range of typical ±2 g consumer-grade parts. The X-Y axis pair lets the ECU compute lateral acceleration versus vehicle yaw rate, supporting both stability and rollover decision algorithms. The 3 kHz analog bandwidth supports crash-relevant frequency content, while integrated factory calibration minimizes per-unit trim on the production line. The wide -40 °C to +105 °C operating range is well matched to chassis-mounted sensor pods that experience wide thermal swings from cold-soak to hot-asphalt conditions.
おすすめ
Anti-Lock Braking System (ABS) Wheel-Cylinder Monitoring
In ABS/ESC integration, the MMA621010AEG serves as the chassis reference accelerometer, providing deceleration feedback that complements individual wheel-speed sensors. With ±100 g full-scale, the part covers the deceleration range seen in panic stops and low-speed impacts. The dual-axis output lets the controller distinguish pure braking from combined brake-and-cornering maneuvers. Internal DSP filtering attenuates suspension-induced vibration and road noise, so the ABS controller sees only the vehicle's bulk acceleration. The SOIC-20 wide-body package is straightforward to inspect and rework during vehicle validation campaigns, which is valuable when iterating on brake-control algorithms.
