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信号处理

Other Parts Discussed in Thread: OPA657, LMH6643

各位TI专家:


我设想调节LED的电流实现对其亮度控制,从而实现mask多进制信号传输。现在,输入才170k左右,输出就不可分辨了。各位TI专家,我该怎么处理输出信号


谢谢了!

图一:四幅值,蓝线是输入,黄线是输出

图二:八幅值,蓝线是输入,黄线是输出