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OPA564芯片经常烧掉和热关断标志位Tflag,电流标志位Iflag电压不正常等问题

Other Parts Discussed in Thread: OPA564

1.电路如图所示,在实际使用中,OPA564经常烧掉,具体现象为芯片刚上电未使能时,15脚,16脚输出电压约为7V左右,当使能脚置高,有信号输入后,OPA564工作电流很大,15V电压被拉低;使能脚再次置低后,测得15脚,16脚为低电平。在调试过程中有50%的OPA564出现此现象,会不会存在输入信号的异常致使OPA564的损坏?

2.能正常工作的OPA564,无论芯片有没有工作,IFLAG标志位电压持续在2.7V,TFLAG则会随着输入信号的有无而忽高忽低!

求解答,谢谢!