Analog output stage for DAC (AK4584)

Ekkeri · 21st March 2009, 04:07 PM

Hi!

I have this DAC, AK4584:

http://www.asahi-kasei.co.jp/akm/en/...84/ak4584.html

I'm asking your opinion what to put to its LOUT & ROUT pins. There isn't nothing yet.

I'm thinking to use that with Corda HA-1 II Headphone amp and modified Sure Electronics Tripath TA2024 amp (sureelectronics Tripath boards?)

Any ideas? Some kind of opamp circuit? What opamp to use? Dual AD843 or something else? I will appreciate all help.. Thanks!

-Mikko

Extreme_Boky · 22nd March 2009, 05:11 AM

That is A/D and D/A interface chip...

If you need differential to single end analog stage, one was discussed in detail in this thread:

Experience with this DIY DAC ?

Boky

Ekkeri · 22nd March 2009, 11:44 AM

Yeah, I'm thinking to use its ADC as a measure device with Eric Wallin's preamp 2 microphone preamp (green inputs). I don't know why there are capacitors in the picture because text says there are internal HiPassFilter that removes DC offset? So I don't have to put any caps to signal path?

Here is some schematics of that AK4584:

DZF in Zero Input Detect Pin (output) so I think it can be used to turn amp off when there isn't anything in the ROUT & LOUT. It says in the page 8 of the datasheet that DAC analog output is 3 Vpp (@5V VREF). So if I use opamp, I don't need too much gain?

I did some more searching (a little too much, I think) and there was op amps (which sounded promising) like LM4562, OPA627, AD843.. And then I found discrete opamps / discrete output stages. And then.. I'm now considering Lampizator.

So hard to decide what to do..

Extreme_Boky · 22nd March 2009, 06:37 PM

"Analog Outputs are single ended" .... you can feed them straight to the pre-amp with reasonably high input impedance. No need for any further gain neither.

The inputs can do without the capacitors.

Boky

21st March 2009, 04:07 PM	#1
Ekkeri diyAudio Member Join Date: Dec 2008	Analog output stage for DAC (AK4584) Hi! I have this DAC, AK4584: http://www.asahi-kasei.co.jp/akm/en/...84/ak4584.html I'm asking your opinion what to put to its LOUT & ROUT pins. There isn't nothing yet. I'm thinking to use that with Corda HA-1 II Headphone amp and modified Sure Electronics Tripath TA2024 amp (sureelectronics Tripath boards?) Any ideas? Some kind of opamp circuit? What opamp to use? Dual AD843 or something else? I will appreciate all help.. Thanks! -Mikko

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22nd March 2009, 05:11 AM	#2
Extreme_Boky diyAudio Member Join Date: Dec 2003 Location: Sydney	That is A/D and D/A interface chip... If you need differential to single end analog stage, one was discussed in detail in this thread: Experience with this DIY DAC ? Boky

22nd March 2009, 11:44 AM	#3
Ekkeri diyAudio Member Join Date: Dec 2008	Yeah, I'm thinking to use its ADC as a measure device with Eric Wallin's preamp 2 microphone preamp (green inputs). I don't know why there are capacitors in the picture because text says there are internal HiPassFilter that removes DC offset? So I don't have to put any caps to signal path? Here is some schematics of that AK4584: DZF in Zero Input Detect Pin (output) so I think it can be used to turn amp off when there isn't anything in the ROUT & LOUT. It says in the page 8 of the datasheet that DAC analog output is 3 Vpp (@5V VREF). So if I use opamp, I don't need too much gain? I did some more searching (a little too much, I think) and there was op amps (which sounded promising) like LM4562, OPA627, AD843.. And then I found discrete opamps / discrete output stages. And then.. I'm now considering Lampizator. So hard to decide what to do..

22nd March 2009, 06:37 PM	#4
Extreme_Boky diyAudio Member Join Date: Dec 2003 Location: Sydney	"Analog Outputs are single ended" .... you can feed them straight to the pre-amp with reasonably high input impedance. No need for any further gain neither. The inputs can do without the capacitors. Boky