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HI
你找哪个代理商购买的? 对于初次使用的芯片推荐直接到TI网站申请免费样片,避免因为芯片质量问题走弯路。
HI, buddy,
两颗料的封装相同,性能不同,不带A的性能更好,是datasheet里面的high-grade代表的产品(温漂,精度相对A版本都更好),如果你stand-grade 就可以接受,就用A版本好了,价格也会便宜,还需要你具体看看datasheet,谢谢。
Best Regards