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'[EE]: Re: distributing video signal'
2002\06\09@201809 by Dave Mumert

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Hi Tal

Try these
http://www.elantec.com/pages/pdf/d42009.pdf
http://www.geocities.com/IECMaster/circuits1/cir_rfv030.html

Dave

> when distributing one video signal to more then one amplifier using
hi-freq
> Operational Amplifier, do I need to distribute as well the inputs for all
> opamps or just connect them all together?

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2002\06\10@053704 by Tal Bejerano - AMC

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if you look at the page that Dave Mumert sent at:
http://www.geocities.com/IECMaster/circuits1/cir_rfv030.html

My question refer to the input of the opamp, if I connect many opamps to one
source with so many resistors on the input, shouldn't it effect the source
signal power? maybe I'll need to amplify the initial signal source? so each
opamp get it's "standard" signal power.

hope that everybody understand what i write.

Regards

Tal Bejerano
AMC - ISRAEL


{Original Message removed}

2002\06\10@061240 by Jinx

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> My question refer to the input of the opamp, if I connect many
> opamps to one source with so many resistors on the input,
> shouldn't it effect the source signal power? maybe I'll need to
> amplify the initial signal source? so each opamp get it's
> "standard" signal power

The terminating resistance is the 75R, and that would be the
major load on the input signal. The signal from the junction of
the 4k7 and 2k5 level control should be able to be taken to a
few more op amps. However, the CA3100 does not have a
particularly high input impedance (and is also obsolete
unfortunately, but there are others around - the Philips NE592
is an 8-pin cheapie) and you should be able to compensate
for that with other amplification stages

The circuit you refer to has already split the signal 3 ways,
could you not just repeat it for further fan out ? Degradation
will probably become apparent the more removed the output
becomes from the input though

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2002\06\10@063356 by Tal Bejerano - AMC

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Jinx

CA3100 isn't a must. I can use others. so no problem

about the outputs, I want to distribute to 20 or so TV monitors and I was
under the assumption that this component can deliver only to 3 outputs.

if I can make it deliver more than 3 outputs it's better for me.



Regards

Tal Bejerano
AMC - ISRAEL


{Original Message removed}

2002\06\10@070205 by Jinx

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> if I can make it deliver more than 3 outputs it's better for me.

I've had a look through some of Maxim's ICs. This page here

http://www.maxim-ic.com/1st_pages/DI135.htm

has ICs with 4 and 6 outputs. Using a combination of buffers
and splitters you should be able to do what you want quite
simply without degrading the signal


Start here http://www.maxim-ic.com/

through

http://dbserv.maxim-ic.com/appnotes10.cfm/ac_pk/26

through

http://dbserv.maxim-ic.com/appnotes10.cfm?filter=category

for other video / product information

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2002\06\10@070620 by Tal Bejerano - AMC
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10x Jinx

Regards

Tal Bejerano
AMC - ISRAEL


-----Original Message-----
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[.....PICLISTKILLspamspam.....MITVMA.MIT.EDU]On Behalf Of Jinx
Sent: Monday, June 10, 2002 1:01 PM
To: EraseMEPICLISTspam_OUTspamTakeThisOuTMITVMA.MIT.EDU
Subject: Re: [EE]: Re: distributing video signal


> if I can make it deliver more than 3 outputs it's better for me.

I've had a look through some of Maxim's ICs. This page here

http://www.maxim-ic.com/1st_pages/DI135.htm

has ICs with 4 and 6 outputs. Using a combination of buffers
and splitters you should be able to do what you want quite
simply without degrading the signal


Start here http://www.maxim-ic.com/

through

http://dbserv.maxim-ic.com/appnotes10.cfm/ac_pk/26

through

http://dbserv.maxim-ic.com/appnotes10.cfm?filter=category

for other video / product information

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