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ADC alignment


New Member
I am trying to know what is real use of ADC alignment ? wheather right alignment or left alignment

I have tried searching on google..failed to get satisfactory answer for it
what will be the effect for 12-bit ADC cortex m4 core if I put
1.right alignment or
2.left alignment


Nigel Goodwin

Super Moderator
Most Helpful Member
The use is simply how you want to handle the data - the classic example would be to left justify it and read just the top byte to get an 8 bit result. Personally I'd normally right justify it if I was wanting full resolution, but the option is there is you prefer it left justified.


Well-Known Member
Most Helpful Member
Left alignment can be used for Q formatted data. It's used a lot in DSP applications to avoid floating point arithmetic in hardware without floating point support.

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