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OPA4727运放 输出电压小于输入电压

Other Parts Discussed in Thread: OPA4727, OPA4330

OPA4727 在主板中的应用如图1所示,

AIN0的输入是+3.3v电压,正常情况下,ADIN0的输出也是3.3V电压。

但是实际测试中发现:ADIN0输出3.5V或2.7V的电压,

 

更换新的芯片后,ADIN0输出恢复正常。