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运放OPA4196同相端和反相端输入电压几乎相同，输出电压却不为0

Tiroy Yang
Prodigy 210 points
Other Parts Discussed in Thread: OPA4196

运放供电电压为:+11.91V;-12.02V。2.5V_1=2.502V

DAC输出（A点）电压为：2.492V; 运放OPA4196反相端（B点）电压为2.026V；运放OPA4196同相端（C点）电压为2.025V；运放OPA4196输出端（D点）电压为90.4mV？；