the summing circuit does not work

suken · 发表于 2014-2-6 18:52:33

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summing circuit

I want to realize this summing circuit based on feedback opamp for input signals of 10G. I just write a verilog A opamp for simulation, but the circuit seems not work. I am confused about how to bias this circuit and is that right to just connect the positive input to groud? what's more , how to choose the resistors here? thanks very much.

rong00i8 · 发表于 2014-2-8 12:42:12

first, check whether the opamp model you designed works well

suken · 发表于 2014-2-9 23:51:16

回复 2# rong00i8

I think it goes well. I pay most attention to the Gain and bandwidth in the model with one pole. I check it before and after adding the feedback.

[求助] the summing circuit does not work

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