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首先这款运放本身就是高电流输出,所以功耗大也是正常的,一般来说VCA822不需要额外的加散热片,这款芯片的结温能大150度,或者你也可以根据Tj = T a+ Pd* theta Ja计算下VCA822的结温是否符合芯片实际的结温温度。
你好!请问:环境温度28摄氏度,芯片无自激振荡现象,单端输入50Hz正弦波,Vpp=0.8V,Rf=1K,R1=Rg=510ohm,带1K、100ohm、50ohm的负载,芯片发热几乎无差别,为60摄氏度,是否正常?谢谢!