MMA3204KEG - ±100g/±30g Dual-Axis Accelerometer | NXP
部品番号: MMA3204KEG ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $12.95 | $129.50 |
| 100 | $10.85 | $1,085.00 |
| 500 | $9.4 | $4,700.00 |
| 1,000 | $8.25 | $8,250.00 |
MMA3204KEG 概要
An accelerometer is a micro-electromechanical sensor (MEMS) that measures proper acceleration (the rate of change of velocity relative to free fall). It belongs to the broader category of motion sensors, which itself is a subset of sensors and transducers. The MMA3204KEG sits within this hierarchy as a dual-axis linear accelerometer, commonly used in industrial and consumer systems that need to detect tilt, shock, vibration, or impact. MEMS accelerometers convert mechanical motion into a change in capacitance, which is then conditioned and amplified into a voltage proportional to acceleration.
Key features include integrated signal conditioning, a four-pole low-pass filter for noise bandwidth control, on-chip temperature compensation, and g-select input pins that allow designers to switch between full-scale ranges. The X-axis sensitivity is 20 mV/g and the Y-axis sensitivity is 66.67 mV/g, with 0 g output at approximately 2.5 V. The device is qualified to the automotive temperature grade and supports surface-mount assembly.
Internally, the MMA3204KEG uses a capacitive sensing cell in which a differential capacitor changes capacitance in response to acceleration, followed by a switched-capacitor amplifier, low-pass filter, and output buffer. This architecture provides stable ratiometric output across the operating temperature range, simplifying firmware calibration.
Typical applications include appliance control, vibration recording, impact monitoring, hard drive protection, virtual reality input devices, and sports diagnostics. The dual-axis capability is particularly valuable in applications where both lateral and vertical motion need to be measured with a single component.
When designing with this device, add 0.1 µF decoupling capacitors close to the supply pin and follow good PCB grounding practice to preserve signal integrity. The g-select pins must be tied high or low to configure the desired full-scale range at power-up.
This page synthesizes distributor pricing, drop-in same-brand alternatives from the MMA3200 series, and practical design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: MMA3204KEG — 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: MMA3204KEG （同一形状・フットプリント） — 相違点: Bandwidth, Operating Temperature, Output Type, Package.
クイック比較ツール — 並列比較する代替部品を選択:
MMA3202KEG
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MMA3201KEG
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MMA3200KEG
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MMA3204KEG 最大定格＆電気的特性
| センサタイプ | Accelerometer, Dual-Axis (X, Y) |
| Technology | MEMS, Silicon Capacitive |
| X-Axis Full-Scale Range (typical) | ±100 g (±112.5 g max) |
| Y-Axis Full-Scale Range (typical) | ±30 g (±33.75 g max) |
| X-Axis Sensitivity | 20 mV/g |
| Y-Axis Sensitivity | 66.67 mV/g |
| 0g Output Voltage | 2.5 V (nominal) |
| 電源電圧 | 4.75 V to 5.25 V |
| Bandwidth | 400 Hz (4-pole low-pass filter) |
| 出力タイプ | Analog, Ratiometric (X and Y separate) |
| g-Select Inputs | Yes (X and Y) |
| Temperature Compensation | On-chip |
| 動作温度 | -40 °C to +105 °C |
| パッケージ | 20-pin SOIC (SOP-20) |
| 実装タイプ | Surface Mount |
| Temperature Grade | Automotive |
| RoHS ステータス | Compliant |
MMA3204KEG ピン構成
| ピン 1 | NC — Not connected (per datasheet) |
| ピン 2 | NC — Not connected (per datasheet) |
| ピン 3 | NC — Not connected (per datasheet) |
| ピン 4 | VDD — Power supply (4.75 V to 5.25 V) |
| ピン 5 | GND — Ground |
| ピン 6 | NC — Not connected (per datasheet) |
| ピン 7 | NC — Not connected (per datasheet) |
| ピン 8 | NC — Not connected (per datasheet) |
| ピン 9 | NC — Not connected (per datasheet) |
| ピン 10 | NC — Not connected (per datasheet) |
| ピン 11 | NC — Not connected (per datasheet) |
| ピン 12 | NC — Not connected (per datasheet) |
| ピン 13 | XOUT — X-axis analog output |
| ピン 14 | YOUT — Y-axis analog output |
| ピン 15 | g-SELX — X-axis full-scale range select |
| ピン 16 | g-SELY — Y-axis full-scale range select |
| ピン 17 | NC — Not connected (per datasheet) |
| ピン 18 | NC — Not connected (per datasheet) |
| ピン 19 | ST — Self-test input |
| ピン 20 | NC — Not connected (per datasheet) |
主な用途
MMA3204KEG の用途: 6 件s: Hard Disk Drive Protection, Appliance Vibration Monitoring, Sports and Fitness Diagnostics, Virtual Reality Input Devices, Industrial Impact Monitoring, Tilt and Inclination Sensing.
Hard Disk Drive Protection
The MMA3204KEG detects free-fall and high-shock events on portable computing devices so the drive head can be parked before impact. Its ±100 g X-axis range covers the typical 150–300 g operating shock seen on dropped laptops, while the ±30 g Y-axis is sufficient to sense vertical acceleration during handling. The 400 Hz four-pole low-pass filter suppresses high-frequency PCB vibration that could otherwise cause false triggers. The device's separate analog X and Y outputs feed directly into an MCU ADC, allowing fast hardware interrupt on threshold crossing. The 5 V analog supply and ratiometric outputs integrate easily with legacy drive controller ICs. Operating temperature of -40 °C to +105 °C supports both consumer and industrial storage products.
おすすめ
Appliance Vibration Monitoring
Front-loading washing machines, dryers, and dishwashers use the MMA3204KEG to monitor drum imbalance and detect abnormal vibration patterns during the spin cycle. The ±100 g X-axis can register the peak transient acceleration of an unbalanced load, while the ±30 g Y-axis captures vertical drum motion. The on-chip temperature compensation keeps sensitivity stable across the wide thermal range inside an appliance cabinet. The 400 Hz bandwidth covers the dominant mechanical resonances of most drum systems. Separate ratiometric outputs let a single MCU channel pair measure both axes, simplifying wiring and BOM cost. Automotive temperature grading ensures reliable operation in hot, enclosed appliance environments.
おすすめ
Sports and Fitness Diagnostics
Sports diagnostic equipment such as golf swing analyzers, baseball bat sensors, and impact-recording wearables rely on the MMA3204KEG to capture the high-g acceleration profiles of athletic motion. The ±100 g range comfortably records club-head speeds in golf and tennis racket impacts that can briefly exceed 50 g, while the ±30 g Y-axis suits running gait and stride analysis. The 400 Hz bandwidth preserves the spectral content of impact events without aliasing. On-chip signal conditioning and four-pole filtering deliver a clean analog signal that can be sampled at low MCU rates. The SOIC-20 surface-mount package allows compact PCB layouts in wearable form factors. Automotive-grade temperature rating supports both indoor gym and outdoor field use.
おすすめ
Virtual Reality Input Devices
VR controllers and motion-tracked input peripherals use the MMA3204KEG to sense quick hand gestures and controller tilts. The X-axis full-scale of ±100 g handles aggressive flick and shake gestures, while the ±30 g Y-axis captures vertical lift motions in casual play. The 400 Hz on-chip low-pass filter removes hand-tremor noise above the gesture bandwidth, providing a stable analog signal. Ratiometric analog outputs at 20 mV/g and 66.67 mV/g let designers connect directly to a low-latency ADC. The 20-pin package supports compact controller enclosures where PCB real estate is limited. The wide -40 °C to +105 °C range covers everything from refrigerated warehouses to outdoor AR/VR demos.
おすすめ
Industrial Impact Monitoring
The MMA3204KEG is deployed in industrial impact recorders and condition-monitoring systems to detect collisions, drop events, and abnormal mechanical shocks on equipment such as forklifts, robotics, and shipping containers. The dual-axis ±100 g / ±30 g ranges cover the typical shock spectra seen in material-handling environments. The integrated four-pole low-pass filter limits noise bandwidth to 400 Hz, isolating the impact signal from motor and gearbox vibration. On-chip temperature compensation preserves calibration accuracy across the wide thermal swings of an industrial site. Separate analog outputs feed MCU ADCs that can trigger event logging on threshold. Automotive temperature grading ensures long-term reliability in continuous-operation industrial settings.
おすすめ
Tilt and Inclination Sensing
Static tilt measurement in construction equipment, agricultural machinery, and platform-leveling systems uses the MMA3204KEG's low-g Y output (±30 g) to detect small inclination changes. The 66.67 mV/g Y-axis sensitivity gives a usable signal of roughly 26.7 mV per degree of tilt at 1 g, easily resolved by a 10-bit ADC. The 0 g bias of 2.5 V sits at the midpoint of a 5 V supply, simplifying single-supply ADC front ends. The integrated four-pole low-pass filter removes vibration noise that would otherwise corrupt tilt readings. On-chip temperature compensation keeps the 0 g bias stable across the operating range. The 20-pin SOIC package is straightforward to integrate into industrial control PCBs.
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: MMA3204KEG — 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 | MMA3202KEG | MMA3201KEG | MMA3200KEG |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 20-pin SOIC | 20-pin SOIC - same | 20-pin SOIC - same | 20-pin SOIC - same |
| Sensor Type | Dual-axis (X, Y) MEMS accelerometer | Dual-axis (X, Y) MEMS accelerometer | Dual-axis (X, Y) MEMS accelerometer | Dual-axis (X, Y) MEMS accelerometer |
| X-axis Full-Scale Range | ±100 g (±112.5 g select) | ±50 g | ±40 g | ±25 g |
| Y-axis Full-Scale Range | ±30 g (±33.75 g select) | ±20 g | ±20 g | ±10 g |
| X-axis Sensitivity | 20 mV/g | 40 mV/g | 50 mV/g | 80 mV/g |
| Y-axis Sensitivity | 66.67 mV/g | 100 mV/g | 100 mV/g | 200 mV/g |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Bandwidth | 400 Hz (4-pole LPF) | 400 Hz (4-pole LPF) | 400 Hz (4-pole LPF) | 400 Hz (4-pole LPF) |
| Operating Temperature | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +105 °C |
主な差別化要因
- Highest g-range dual-axis part in the MMA3200 SOIC family （vs MMA3202KEG)
- Better suited for impact and shock than lower-range MMA3200 variants （vs MMA3201KEG)
- Dual-axis coverage in a single SOIC-20 footprint （vs MMA2204KEG)
設計ノート
The MMA3204KEG requires a clean 4.75 V to 5.25 V analog supply. Place a 0.1 µF ceramic decoupling capacitor as close as possible to the VDD pin (pin 4) and a bulk 1 µF to 10 µF capacitor on the supply trace. Noise on VDD couples directly into the XOUT and YOUT analog outputs because the device is ratiometric; ripple above 50 mV will be visible on the output and degrade measurement accuracy.
Route the analog XOUT and YOUT traces as differential pairs away from switching nodes such as DC-DC converters, motor drivers, and clock lines. Use a continuous ground plane beneath the device and avoid placing vias in the signal path. The exposed paddle (if present on the package variant) should be soldered to the ground plane to improve thermal dissipation and reduce mechanical stress on the sensing element.
Do not leave the g-SELX and g-SELY pins floating; tie them to VDD or GND with a defined logic level at power-up, or the full-scale range will be indeterminate. Avoid mechanical stress on the package during PCB assembly, as this shifts the 0 g bias. The self-test pin (ST, pin 19) should be left open or tied to GND during normal operation; only drive it high to perform a functional self-test at start-up.
コンプライアンス情報
RoHS and REACH compliant per NXP product page and distributor listings. AEC-Q100 not formally declared for this specific part number, but the part is qualified to the automotive temperature grade per the manufacturer datasheet. Halogen-free status not explicitly stated in the verified web data — confirm with NXP before requiring it.
