http://www.pic16.com/soft/PCM1793DAC_sch.pdf
what is the role of lm1875 here? Rail splitting. I would have chosen standard positive and negative from the bridge and use positive and neg regs instead of that? what do you say?
apart from that is everything ok with that schematic?
Im planning to saperate Analog GND and Digital GND
any suggestions?
do I need to short these two grounds?
regulators thinking of using TI TPS7A4700 and its compliment.
what is the role of lm1875 here? Rail splitting. I would have chosen standard positive and negative from the bridge and use positive and neg regs instead of that? what do you say?
apart from that is everything ok with that schematic?
Im planning to saperate Analog GND and Digital GND
any suggestions?
do I need to short these two grounds?
regulators thinking of using TI TPS7A4700 and its compliment.
Yes, the LM1875 is being used as a rail splitter.
I have one of these DACs and it has worked well for
the last four years. That said, I would not design it the way it is either.
Like you, I would go the route of separate digital and dual rail analog
supplies. No need to use separate grounds for analog and digital if you
steer your currents correctly.
TPS7A4700 does not have a direct compliment.
I have one of these DACs and it has worked well for
the last four years. That said, I would not design it the way it is either.
Like you, I would go the route of separate digital and dual rail analog
supplies. No need to use separate grounds for analog and digital if you
steer your currents correctly.
TPS7A4700 does not have a direct compliment.
the terminations of the pcm1793 are not good i believe rather look at this..
http://pic.hifidiy.net/forum/forumid_2/10031015291a74eacc47512192.jpg
what do you say is the above one is better than the older one?
http://pic.hifidiy.net/forum/forumid_2/10031015291a74eacc47512192.jpg
what do you say is the above one is better than the older one?
The filter networks are the same.
The difference is they used to single op amps and power comes from somewhere else(?)
The difference is they used to single op amps and power comes from somewhere else(?)
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