Hi,
Recently I have a DSP filter project. From the DSP evaluation module circuit I found that for almost all digital outputs there are 33 ohm resistors connecting in series before to the target pin. I wonder if it is necessary as it would spend much PCB space in my custom board.
Thanks!
Thanks!
Acts as a series termination, to "kill" reflections on the driven line. You obviously need some trace length to go from one IC to another; an
0402 size chip will take no more space...Have something to add? Share your thoughts — no account required.
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