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SMA790

用于安全气囊系统的卫星传感器

应用和技术摘要

SMA7xy

SMA790是一款用于汽车被动安全系统的通用型high-g加速度传感器,可检测车辆的减速情况。它通常用于卫星传感器中,以感应正面和侧面碰撞。

SMA790通过PSI5 v1.3进行通信。所有传感器数据均由安全气囊中央ECU处理,ECU根据加速度数据识别碰撞并激活相应的安全气囊。该传感器是根据ISO26262开发的,用于ASIL D系统。

产品优势

  • 符合VDA AK-LV 27规范
  • Robustness against microcuts
  • 可触发的偏移量调整
  • 符合RoHS标准
  • 专为要求达到ASIL D的系统而开发

目标应用

  • 卫星传感器

丰富的现场经验

从数亿个传感器中获得,这是SMA7xy的基础

技术特点

类型
单轴high-g加速度传感器
封装
LGA SiP
感应轴
Z
范围
±120/240/480
接口
PSI5 (PAS)
数据解析
10 bit or 14 bit
公差
±7%
电源电压
4.5 to 11 V
电源电流
< 6 mA (sink current 26 mA)
工作温度
-40°C to 125°C

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