Part Number: OPA189
我从官网下载了OPA189的TINA设计参考，里面给了一些波形图，我想问问这些图是怎么弄出来的
1、频率和噪声密度的图
2、小信号阶跃响应的图
3、用TINA做滤波器仿真时，无源或者有源滤波器，那个滤波器群延迟Group Delay的图怎么弄出来。
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