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现在想用一个DAC产生一个直流电压去控制多片VCA810，可能大概有120片VCA810，打算用电压跟随器去增加一下驱动电流，然后再去控制，但是不知道具体能同时控制多少片VCA810，希望能给予解答
建议先仿真一下，下面帖子讨论了类似问题，请参考。
VCA810: Input impedance - Amplifiers forum - Amplifiers - TI E2E support forums
