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FXLS90322AESR2
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- NXP FXLS90322AESR2
- Type
- NXP
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- FXLS90322AESR2
- Electronic Component
- 1
- Package
- HLQFN-16(4x4)
- Electronic Component
- IMU Sensor / Gyroscope
- Electronic Component
- 1g
- Electronic Component
- 1
- Electronic Component
- BM0258741638
- Operating Temperature
- 40℃~+125℃
- Operating Voltage
- 3.135V~5.25V
- Interface Type
- I2C；SPI
- Output
- 12bit
- Sensor Type
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- 2000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FXLS90322AESR2 产品概述
一、概述
FXLS90322AESR2 是恩智浦（NXP）面向汽车安全领域的 XY 双轴中等量程惯性传感器，专为安全气囊触发与碰撞检测等高冲击应用设计。器件采用 HLQFN-16 (4×4 mm) 封装，工作温度范围宽 (-40℃ 至 +125℃)，适应汽车级环境要求。
二、主要参数与特性
- 传感器类型：双轴加速度计（X、Y）。
- 量程（最大）：±500 g（medium-g，适用于碰撞事件捕获）。
- 输出分辨率：12 bit（12 位输出，4096 步）。按 ±500 g 量程估算，量化步距约 0.244 g/LSB（近似值，具体线性与偏移请参照数据手册）。
- 接口类型：I2C 与 SPI（双接口，便于不同 MCU 集成）。
- 工作电压：3.135 V ~ 5.25 V（宽电压兼容常见 3.3 V 与 5 V 系统）。
- 工作温度：-40℃ ~ +125℃（满足汽车环境）。
- 封装：HLQFN-16（4×4 mm），便于 PCB 紧凑布局与自动化贴装。
三、典型应用场景
- 汽车安全气囊与碰撞检测系统（air bag / crash sensing）。
- 被动安全事件记录、侧向碰撞检测与安全控制单元触发逻辑。
- 工业冲击监测、振动分析等需要短时高冲击响应的场合。
四、设计与布局建议
- 电源去耦：在 VDD 近端放置 0.1 μF 陶瓷去耦电容，必要时并联 1 μF 以抑制低频噪声。
- I2C / SPI 接口：I2C 侧使用上拉电阻到 VDD；SPI 需关注时钟极性/相位配置与片选使能。若 MCU 电压低于传感器最小电压，需做电平转换。
- 走线与阻抗：信号线缩短并远离高频开关电源，SDA/SCL 或 MOSI/MISO/CLK 走线尽量并行并加终端/滤波以降低干扰。
- 机械安装：传感器应靠近车体参考点或碰撞测量点安装，保证测量轴与车辆坐标系对齐；避免在应力集中或高振幅共振区域粘贴。
五、可靠性与环境适配
- 温度与冲击：器件额定温度与高量程使其适合汽车碰撞环境，但应避免超过 ±500 g 的短时冲击峰值或长期机械残伤。
- ESD 与防护：在汽车系统中常见静电和浪涌，设计时须在外部添加保护元件（如瞬态抑制）并在 PCB 布局上考虑接地与屏蔽。
六、快速选型与实施要点
- 若系统需要同时支持 I2C 和 SPI，则 FXLS90322 提供灵活接口选择；若 MCU 电源在 3.135 V~5.25 V 范围内，可直接对接。
- 依据 12-bit 分辨率与 ±500 g 量程评估是否满足触发阈值与分辨率需求；如需更高分辨率或低速测量精度，请比对其他量程/分辨率器件。
- 最终设计前请参考恩智浦官方数据手册获取完整寄存器映射、电气特性、滤波/带宽设置及推荐 PCB 布局图，完成软件阈值与去偏校准以确保可靠触发与重复性。
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