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PSK調變與定電流源輸出

Other Parts Discussed in Thread: LM4121

hi,

1)

我在測試PSK調變/解調變的電路

載波約14KHz 

TI有調變的IC. 但是好像沒有看到適合的

請問有推薦可以用的調變IC嗎?

另想問官方有相關的application note嗎?

2)

我也正在找定電流源輸出的application note.

輸出0.03mA

上網找的定電流源輸出都很大, 沒有這麼小的

有推薦的電路嗎

 

謝謝