The A31102 is an especially configurable and robust solution for the most demanding linear magnetic field sensing applications, including torque sensing in electronic power steering (EPS).
A31102的两个主要特征是低噪声输出和能力,即使具有非线性输入磁场,即使提供高度线性的装置输出。为此,每个BICMOS单片集成电路包括以下内容:霍尔传感元件,超低噪声前端放大器,专有动态偏移消除电路,片上应力补偿电路,一个16位模数转换器(ADC)和高度灵活的数字信号路径,包括精密温度补偿电路,以降低霍尔元素的内在灵敏度和偏移漂移,高级输出线性化电路和先进的诊断检测功能。它还包括片上EEPROM,用于存储所有必要的工厂和客户可编程参数,以正确配置每个设备。
The A31102 was developed in accordance with Allegro’s third party certified ISO 26262:2011 compliant development processes, and as such is ideal for safety-critical applications like EPS torqu sensing. The A31102 dual die option (DD) was designed to meet ASIL D requirements and the A31102 single die option was design to meet ASIL B requirements, when integrated and used in conjunction with the appropriate system-level control, in the manner prescribed in the A31102 Safety Manuals. Contact your local Allegro sales representative for more detailed functional safety-related documentation, like the Safety Manual.
除了SAEJ2716-SSENT和HEAT之外,A31102还包含两个专有的发送协议。两个协议使用户能够在一个发送的线上附加到四个设备,以降低系统成本。SSENT允许顺序访问连接到同一行的传感器。SSENt提供了一个非常低的开销方法,可在此单个发送线上最大化传感器带宽,从而最大限度地减少对系统性能的影响。结果允许直接可寻址访问通用的发送线上的所有传感器。两个协议允许在同一条线上允许各个传感器进入诊断模式,而其他传感器继续响应查询,允许最高的诊断覆盖,同时保持传感器解决方案的100%可用性。
A31102可在表面贴装,引线(PB)14针TSSOP封装(Lu后缀)中提供,具有100%哑光锡引线框架。
A31102符合2015/863 /欧盟的欧盟指令2002/95 / EC(RoHS)和2011/65 /欧盟(RoHS II)的要求,就电气和电子中某些有害物质的使用限制了设备。