Adau1452 evaluation board

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#3
Best to ask analogue devices, they are usually helpful and reply quickly, just go to there forum. It definitely says in the user guide its restricted to 48Khz but doesn't say why. Its a good idea to download sigma studio and have a play (its free) and see if your design will fit at 192Khz, the sample rate affects the complexity of design that you can build. I used the ADAU1701 for a sub and it performs very well.
 
#4
golfgtig60 said:
Hi..is It possible to use adau1452 evaluation board as a dsp for my audio system ?
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YES.
golfgtig60 said:
I've seen that the sampling rate of ad1938 is at 48khz..But adau supporto 192khz
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The eval board has fixed rate of 48kHz, I think this is only for the ADCs and DACs. Read the documentation - you might be able to get a digital output at a higher rate.
 
#8
golfgtig60 said:
But is this board a good choise for an high quality dsp ?
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You can build a high quality DSP with ADAU1452, if this is your question.

It is an evaluation board for ADAU1452 !!
I don't remind the accurate result, but THD+N was approximately -88dB for a loop DSP->DA->AD. (just one spec.)

What are your requirements ? (you did not answered any question).


Maybe you should clarify your requirements.
You can hook up additional D/A to the freeDSP.

Are you looking for single-ended or differential output? Inputs? Is 0,9VRMS enough for your application?
Supply structure? all-in-one/modular? Special processing needed? (This is one of the main limitation of the MiniDSP)
For example do you need dynamic processing, extended control functions, limiter/compressor, FIR IIR ... budget ...

For the price, i can recommend the eval board, but does it fulfill your requirements ?? ...
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If you just want common IIR filtering, use a miniDSP/freeDSP.
 
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#9
Are you looking for single-ended or differential output? I'm looking for single-ended output.
Almost 6 outputs


Inputs?
Almost 1 digital input and 1 analog input


Is 0,9VRMS enough for your application?
i have a car audio stereo and i will connect it into my dsp..so i will connect my smartphone in it.. so can you explane what is input level? aren't they similar?

Supply structure? all-in-one/modular? indifferent


Special processing needed? (This is one of the main limitation of the MiniDSP)
For example do you need dynamic processing, extended control functions, limiter/compressor, FIR IIR ... budget ...
now i will use it for processing a 2way audio system with subwoofer in my car
for a crossover frequencies but if it is possible i'dd like a very good performance for my dsp in order to have the way if i need special functions


For the price, i can recommend the eval board, but does it fulfill your requirements ?? ...
 
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#10
If you want to overshoot, go for the eval board.

You just have to take care on power supply.
I would prefer galvanic isolation.

golfgtig60 said:
Is 0,9VRMS enough for your application?
i have a car audio stereo and i will connect it into my dsp..so i will connect my smartphone in it.. so can you explane what is input level? aren't they similar?
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Input sensitivity / voltage gain of your amp.

But there will be a (maybe big?) problem, you have to create your own project.
SigmaStudio is a GUI based development environment, without any basic knowledge it can be a difficult task.

Maybe it'll be a better solution for you to go for a finished product.
For example Helix HX DSP (ADAU1452 inside) ..
 
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