Hi
I'm playing with 2 PCM1798 in mono mode.
I checked all voltages and signals with a scope, but don't get output. I should be able to see something with 100 R against GND on the output right?
I can run another DAC chip with the I2S-signal so the source should be ok.
At the output pins I measure 5V without load. I don't think this is normal, so are the chips dead? With 100 ohms it goes down to about 1 V.
Initially I had connected IoutR- with IoutL-, same with the + outputs, which seems not to be the right way
http://www.diyaudio.com/forums/digi...ono-mode-balanced-output-help.html#post339398
Could this have killed the chips?
thanks
P.S. This was a dumb question. I separated the ouputs, adjusted my I/V stage to 2.4 V and one chip played on one half for 10 seconds very well.
So I decided to connect both chips and + and - the right way. But it seems that now I really fried both chips. The 5V supply goes down to 2.1V. They got a liittle warm but not hot. Any idea how this happened?
P.P.S: even dumber. Supply connector displaced.
I'm playing with 2 PCM1798 in mono mode.
I checked all voltages and signals with a scope, but don't get output. I should be able to see something with 100 R against GND on the output right?
I can run another DAC chip with the I2S-signal so the source should be ok.
At the output pins I measure 5V without load. I don't think this is normal, so are the chips dead? With 100 ohms it goes down to about 1 V.
Initially I had connected IoutR- with IoutL-, same with the + outputs, which seems not to be the right way
http://www.diyaudio.com/forums/digi...ono-mode-balanced-output-help.html#post339398
Could this have killed the chips?
thanks
P.S. This was a dumb question. I separated the ouputs, adjusted my I/V stage to 2.4 V and one chip played on one half for 10 seconds very well.
So I decided to connect both chips and + and - the right way. But it seems that now I really fried both chips. The 5V supply goes down to 2.1V. They got a liittle warm but not hot. Any idea how this happened?
P.P.S: even dumber. Supply connector displaced.
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