How to convert 8bit digital data to analog form?

[patel_ec]

hello
i want to convert 8bit digital data to analog form.

i want to generate different waveform using pc parallel port,for that i want digital to analog circuit which should give me frequency at least up to some hz.

if u have any idea then plz help me.

thx in advance...
saurabh patel

 

[rancohen_2000]

Re: digital-to-analog

hi,

if you need DAC and you want to controll it using LPT1 you can use Evaluation board from Analog Device. this is alink for the DAC of the analog device.

**broken link removed**

each board have Evaluation board that connect to the parallel port and software that can control it.


the evaluation board also has schematic that you can use for your needs.

 

[louisnells]

Re: digital-to-analog

Hi
You have to use a DAC to convert digital data in to analog. But you have to make specifications as the maximum frequency of the waveform you want to generate. Because all DACs has frequency limits.

As far as I know parallel port can support up to 2M SPS (may be more) data rate, but the data rate depends on the parallel port mode you are using. DAC0800 from National may be a good candidate. It needs minimal control signals and can support up to 10M SPS. Regarding parallel port may be you should refer beyondlogic.org.