Does anyone knows the altmustech I2S/LVDS Modules?

Status
Not open for further replies.
Jump to Latest
#4
I would imagine these would be far better than trying to take the RAW I2S signal off board (something it is not designed to do) and LVDS is the best method of transmitting such a signal. No ground connection between the units🙂
Do you know what device they use, I couldn't find any info on their site...
I am a fan of LVDS, its far better than messing with a single ended signal... I would like to know the devices they are using, those data sheets will give further insight.
 
#8
Probably the best way to transmit signals is LVDS (look at USB and the Ethernet.)
No ground connection required, over the short distance to be used probably not much noise pick up...
I'd be interested in any views you have when you try them (if you do).
I have seen these devices used before but not for Audio signals, rear end of 50 ADC channels to send digital data down differential PCB routes.
 
#9
marce said:
snipped......I have seen these devices used before but not for Audio signals, rear end of 50 ADC channels to send digital data down differential PCB routes.
Click to expand...

In case you mean analog signal with 'Audio signals':

I believe it's the intention of the OP to run I2S signals from the player to the DAC. These are digital/logic signals.

These modules are in functionality equal to Twisted Pear's Teleporter modules.
 
#10
Read what I said the rear end of ADCs they carried the digital outputs of the ADCs, so they could be transmitted as differential signals down differential routing, instead of single ended, thus allowing me to reduce crosstalk noise pick up for the 50 digital signals for each analogue channel, this was a test board for UV sensor to go in a satellite(so not audio based analogue)... So I would hope that laying out such a board I could differentiate between analogue and digital signals..........
 
#11
I intend to use it sending the I2S from the CD to the DAC. On the other site i plan to use a balanced DAC-Sytem. I know that many users disadvise to use a balanced-TDA1541-DAC-System but i´ll try it. Will it be a possibility to resign the receiver and feed the DAC with the + and - Signal (balanced) out of the transmitter?

Best regards
Dieter
 
#13
But two DACs, one left feed with L+ and L- and the other for right feed with R+ and R-, can receive the Signal from the transmitter, or not? And i Think with the transmitter in use as "Line-Driver" i can go a distance from 50cm over cable.
 
#19
You did not understand what i would say. The transciever sends a differetial Signal. But when i feed a dac with the "cold channel" (the inverted Signal) it is not the inverted analog Signal on the output of the Dac, isn't it? Or is it? Then it would be possible to feed a dac with the differential Signal of the transmitter to get a balanced output Signal. I'm just confused....
 
#20
DieterK said:
You did not understand what i would say. The transciever sends a differetial Signal. But when i feed a dac with the "cold channel" (the inverted Signal) it is not the inverted analog Signal on the output of the Dac, isn't it? Or is it? Then it would be possible to feed a dac with the differential Signal of the transmitter to get a balanced output Signal. I'm just confused....
Click to expand...

What would be the benefit of feeding the DAC with one-half of the differentlal signal?

As Marce wrote: you take the single ended I2S signals from de CD transport and before you send it onto a long distance connection to your DAC you convert it to a differential signal. When it arrives at the DAC the first thing is that you convert it back to single ended and then feed it to the DAC.

I2S was never intended for 'long distance' communication but with LVDS you can stretch the distance I2S (or any other signal) can travel with some immunity to disturbence to other electrical stuff (sorry, not a native speaker, but I guess you understand what i mean).

Actually, why not transport the signal by S/P-DIF?
 
Status
Not open for further replies.
Top Bottom