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New CS4398 plus PGA2320 DAC board set to work

Posted 25th June 2012 at 01:57 AM by googlyone

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ID:	719Just finished set to work of the new DAC for the digitial crossover. This includes a PGA2320 programmable attenuator on the output of the CS4398 DAC.

This replaces the home made PCB thai I was using on the CS4398 output. I went the professionally made board mainly because PCBCART was able to deliver 16 of these to my house for $140, that includes tooling!!! The actual boards were like $3 or 4 each!

The quality of these baords is fine - though I must admit that I am not breaking any new ground in PCB technology here.

The board is only double sided - I thought about adding a seperate ground and power plance - but the routing density is so lot it would be crazy. The whole back side only has a handful of tracks on it - and is a ground plane in itself. The top side even has room for significant ground fill.

All the digital stuff is in between the connector and the DAC, with a few SPI lines up the left hand...
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