INA250电流检测放大器的主要特性与优势
业界最准确的集成式解决方案:
集成式2毫欧分流电阻器可在在-40oC至125oC的范围内,提供0.1%的容差以及15pmm/°C的低漂移,使终端设备的性能更高。
该放大器可提供12.5mA的偏移电流、250μA/oC的温度漂移和30ppm/°C的增益漂移。
集成封装技术可确保集成电路(IC)和电阻器之间优化的开尔文连接(Kelvin connection)。
该放大器在-40°C至+125°C的温度范围内最大误差仅为0.75%。
大幅降低系统成本并并显著缩减电路板占位面积:通过集成分流电阻器,与同类竞争产品的解决方案相比能大幅降低系统成本(达76%)并显著缩减电路板占位面积(达66%)。
低功耗:最大功耗仅为300μA,可最大限度地减轻测量方法给系统增加的负载。
可加快设计速度的工具与支持
INA250评估模块(EVM)使设计人员能轻松快捷地评估该器件的准确度。INA250EVM现已开始供货,欢迎从TIStore和授权分销商处购买。INA250TINA-TI和TINA-TISpice模型可供下载。
大联大旗下世平集团的技术团队已成功完成可穿戴设备经由微信WechatAPI,与厂商服务器进行通讯的功能验证,并推出基于TICC254X的可穿戴设备与微信互联互通解决方案及加上基于CSR、Epcos-TDK、TI、Toshiba的低功耗蓝牙芯片解决方案的组合。此举将为可穿戴设备厂商提供微信平台入口与服务器通讯协议技术支持,更提升了可穿戴产品的快速、低功耗无线连接性能。
可穿戴设备市场是智能硬件设备的下一个重点发展领域,市场潜力巨大,不少互联网公司都已开始布局抢占可穿戴设备市场入口,包括百度、小米、阿里巴巴等。近期,又一位互联网巨头腾讯也强势进军可穿戴市场,拥有4.38亿月活跃用户的腾讯微信即将开放WeChatAPI接口。
在大联大世平推出的该方案中,微信WeChatAPI将为可穿戴设备用户提供无缝体验,用户不需要再下载额外的独立应用,直接通过扫描二维码关注可穿戴设备微信公众平台即可建立连接:实现可穿戴设备数据被实时传送至云端服务器,经过数据处理后,云端服务器再经由微信传回数据给可穿戴设备。此外,还可以利用微信朋友圈进行排行榜,口碑、话题等推广,但同时可穿戴设备也将对微信接口的技术能力提出更高要求。
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