Power on Coms?
Power on Coms?
(OP)
Does anyone know of any power on communications IC? I have DC power, and need to modulate a low speed digitial communication signal on it (like from a UART). I could dsign my own from PLLs and Drivers, but there must be a IC out there that does this? Have searched all the sites I know of, but come up empty.
Steve Owens
Finish Line Product Development Services
www.FinishLinePDS.com
Steve Owens
Finish Line Product Development Services
www.FinishLinePDS.com





RE: Power on Coms?
I think you will find there is lots of stuff out there.
RE: Power on Coms?
RE: Power on Coms?
I have used the original Signetics chips, before X10, on top of telephone voice communication. But if you put a modem on the phone line and it is active, the harmonics would kill my data stream. And a phone line is after all a DC line.
RE: Power on Coms?
Steve Owens
Finish Line Product Development Services
www.FinishLinePDS.com
Steve.Owens@FinishLinePDS.com
RE: Power on Coms?
Just make sure there are no coils in the line, and no capacitors across the line.
On some DC supplies, you may need a choke in each lead at the source to isolate you from a capacitor.
RE: Power on Coms?
http://www.e-insite.net/ednmag/archives/1998/010198/01di_08.htm
http://www.epanorama.net/links/psu_monitor.html
http://www.toshiba.co.jp/about/press/1999_12/pr1701.htm
http://www.mods.dk/log.php3
etc. for more info