Electronic Circuits and Projects Forum

Use a PIC to do it, or any other micro-controller - you need to intrface the DAC in someway anyhow, presumably it doesn't just take RS232?.

Hmm OK, Thanks.. We are intending on using this DAC chip: AD5668 | Octal, 16-Bit D/A Converter with 5 ppm/°C On-Chip Reference in 16-Lead TSSOP | D/A Converters | Digital to Analog Converters | Analog Devices

-Dan

Hmm, why is my Reputation bad? I haven't done anything wrong have I?

Originally Posted by Pommie

There is no device that can buffer data that has not been received. A Pic will buffer the data until more data is required. You will require handshake lines or the Pic will get full up very quick.

Mike.

Sorry, I didn't mean to buffer invisible data, I meant to buffer the previously sent data untill new data is received.

-Dan

hahaha OK

Well, essentially, we have the FTDI drivers here for a premade DAC that uses a FTDI chip too, so essentially all we need to do, is interface PC ->FTDI USB - Serial -> Buffer -> DAC and then amp 2 of the DAC outputs to +/-5V differential, and the other channels to just 5-0v, then the rest is just software. Sounds about right, am I missing anything?

Originally Posted by Pommie

What speed will the serial be running? Feeding what I assume is a stereo DAC at good quality is a lot of data and will define how you can solve the problem.

Mike.

Hi, the DAC chip I linked is 8 channels, 16bit. My friend reckons about 30mhz.

Essentially, we need to amp 2 of those output channels to give us +/-5v, or 10v PTP, and the other 6 are just going to be 0-5V output.

-Dan