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请教OPA2277发烫问题

Other Parts Discussed in Thread: DAC7821, OPA2277

应用为利用OPA2277将REF5010产生的10V电压变为-10V给DAC7821提供一个负电压基准,

如下图,R1=R2=1K

发现OPA2277发烫,温度可以达到50度以上

请问这正常吗?

尝试过将R1,R2加大和去掉DAC7821,温度都没有降下来。

用的是VSON封装的芯片。

请问我该从哪些方面去查看这个问题