Hi All, I want suggestions about making high-speed opto-isolated UART communications between 1. Microcoltroller to Microcontroller at TTL Levels. 2. RS232
Isolated UART communication
Started by ●May 3, 2007
Reply by ●May 3, 20072007-05-03
Rohan wrote:> Hi All, > > I want suggestions about making high-speed opto-isolated UART > communications between > 1. Microcoltroller to Microcontroller at TTL Levels. > 2. RS232 >Go to Analog Devices Web pages <http://www.analog.com/>, and click 'isolators'. -- Tauno Voipio tauno voipio (at) iki fi
Reply by ●May 3, 20072007-05-03
On May 3, 11:51 pm, Tauno Voipio <tauno.voi...@INVALIDiki.fi> wrote:> Rohan wrote: > > Hi All, > > > I want suggestions about making high-speed opto-isolated UART > > communications between > > 1. Microcoltroller to Microcontroller at TTL Levels. > > 2. RS232 > > Go to Analog Devices Web pages <http://www.analog.com/>, > and click 'isolators'. > > -- > > Tauno Voipio > tauno voipio (at) iki fiHi, Thanks. I forgot to add that I need a cheap working solution for mass production. Something with normal optocouplers. is it possible. Thanks, Rohan
Reply by ●May 3, 20072007-05-03
On 3 May 2007 11:40:41 -0700, Rohan <rohanshar@gmail.com> wrote:>Hi All, > >I want suggestions about making high-speed opto-isolated UART >communications betweenWhat is high speed ? 110/9600/115k2/12Mbit/s ? What isolation requirements 0.5 kV, 2.5 kV, 110 kV or 400 kV ?>1. Microcoltroller to Microcontroller at TTL Levels.Standard 20 mA current loop or +/-10 mA bipolar current loop.>2. RS232At least RS-232C did not specify speeds above 9k6, so going to 20 mA current loop would be sufficient. Paul
Reply by ●May 3, 20072007-05-03
Rohan wrote:> Hi, > Thanks. > I forgot to add that I need a cheap working solution for mass > production. Something with normal optocouplers. > is it possible. > Thanks, > RohanYou still have not said how fast you need to go! We use H11L1 optos (Schmitt, ~1us, 1.6mA ), as a good trade off between speed and price. -jg
Reply by ●May 5, 20072007-05-05
"Jim Granville" <no.spam@designtools.maps.co.nz> wrote in message news:463a57a6$1@clear.net.nz...> Rohan wrote: > > > Hi, > > Thanks. > > I forgot to add that I need a cheap working solution for mass > > production. Something with normal optocouplers. > > is it possible. > > Thanks, > > Rohan > > You still have not said how fast you need to go!In his first line:> Hi All, > > Any suggestions about making high-speed (16k baud) opto-isolated UARTMeindert
Reply by ●May 5, 20072007-05-05
Meindert Sprang wrote:> "Jim Granville" <no.spam@designtools.maps.co.nz> wrote in message > news:463a57a6$1@clear.net.nz... >> Rohan wrote: >> >> > Hi, >> > Thanks. >> > I forgot to add that I need a cheap working solution for mass >> > production. Something with normal optocouplers. >> > is it possible. >> > Thanks, >> > Rohan >> >> You still have not said how fast you need to go! > > In his first line: > >> Hi All, >> >> Any suggestions about making high-speed (16k baud) opto-isolated UART > > MeindertI don't know where you got the parenthesised portion of the text from but it was not in the original post of this thread nor any subsequent one from the OP. Original message was:-> Hi All, > > I want suggestions about making high-speed opto-isolated UART > communications between > 1. Microcoltroller to Microcontroller at TTL Levels. > 2. RS232-- ******************************************************************** Paul E. Bennett ....................<email://peb@amleth.demon.co.uk> Forth based HIDECS Consultancy .....<http://www.amleth.demon.co.uk/> Mob: +44 (0)7811-639972 Tel: +44 (0)1235-811095 Going Forth Safely ..... EBA. www.electric-boat-association.org.uk.. ********************************************************************
Reply by ●May 5, 20072007-05-05
"Paul E. Bennett" wrote:>... snip ...> > I don't know where you got the parenthesised portion of the text > from but it was not in the original post of this thread nor any > subsequent one from the OP.Second post in the thread, which included:> Any suggestions about making high-speed (16k baud) opto-isolated > UART communications betweenIt was posted 2 min after the first post. -- <http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.txt> <http://www.securityfocus.com/columnists/423> <http://www.aaxnet.com/editor/edit043.html> <http://kadaitcha.cx/vista/dogsbreakfast/index.html> cbfalconer at maineline dot net -- Posted via a free Usenet account from http://www.teranews.com
Reply by ●May 5, 20072007-05-05
CBFalconer wrote:> "Paul E. Bennett" wrote: >> > ... snip ... >> >> I don't know where you got the parenthesised portion of the text >> from but it was not in the original post of this thread nor any >> subsequent one from the OP. > > Second post in the thread, which included: > >> Any suggestions about making high-speed (16k baud) opto-isolated >> UART communications between > > It was posted 2 min after the first post.My newsreader had organised that into a different thread so it was unseen when I queried the parenthesis portion. Sorry. -- ******************************************************************** Paul E. Bennett ....................<email://peb@amleth.demon.co.uk> Forth based HIDECS Consultancy .....<http://www.amleth.demon.co.uk/> Mob: +44 (0)7811-639972 Tel: +44 (0)1235-811095 Going Forth Safely ..... EBA. www.electric-boat-association.org.uk.. ********************************************************************
Reply by ●May 5, 20072007-05-05
Meindert Sprang wrote:> "Jim Granville" <no.spam@designtools.maps.co.nz> wrote in message > news:463a57a6$1@clear.net.nz... > >>Rohan wrote: >> >> >>>Hi, >>>Thanks. >>>I forgot to add that I need a cheap working solution for mass >>>production. Something with normal optocouplers. >>>is it possible. >>>Thanks, >>>Rohan >> >>You still have not said how fast you need to go! > > > In his first line:Nope, Not on what I was reading; but no matter, the advice I gave was still sound. -jg