I am using a line driver(ds900c032) that feeds the dac7734 and I am having trouble with the off time, or turning parts off then on and collecting data. The power sequence on is -15v, +5v then the +15v. Reverse in shut down. The driver is getting warm during shut down but is not failing. I am also using the dac7731 with the same buffer. We did have a sequence issue on turn on originally when we where turning the +/- 15v then +5 and we were drawing to much current through the buffer. we have to wait 2-3 minutes before we can cycle power on and collect data. I would like that to be much faster. I have not been able to collect data on the system yet but I thought I would post the question since I have done a data sheet review.
Any thoughts?
Thanks
Bill