Cable for audio balanced line driver (drv134 )

fluc · 23rd April 2008, 04:48 PM

Anyone have experience with the type of cable that needs to be used between a DRV134 and a INA134 when we want to transmit over long distance (200m)?

In the chip specifications, they suggest the Belden 8451 or 9452 cable. It is a 22 AWG twisted and shielded pair with about 45 ohms impedance. Can we use other type of cable with good results? I would like to use cat 5e cable that has 100 or 120 ohm impedance.

fluc

BWRX · 23rd April 2008, 05:52 PM

If you parallel a couple strands of cat5e cable the impedance will be cut in half. If you already have the cat5e cable why not try it out and see how it works. 200m is a pretty long run.

AndrewT · 24th April 2008, 10:53 AM

Hi,
presumably if both ends of the cable are terminated correctly then the actual cable impedance does not matter.

One could use 45/50ohm (Coax) or 75ohm (coax) or 110ohm (UTP) and choose the correct termination values.

BWRX,
comments please.

fluc · 25th April 2008, 06:30 PM

Thanks for the reply.

23rd April 2008, 04:48 PM	#1
fluc diyAudio Member Join Date: Mar 2008	Cable for audio balanced line driver (drv134 ) Anyone have experience with the type of cable that needs to be used between a DRV134 and a INA134 when we want to transmit over long distance (200m)? In the chip specifications, they suggest the Belden 8451 or 9452 cable. It is a 22 AWG twisted and shielded pair with about 45 ohms impedance. Can we use other type of cable with good results? I would like to use cat 5e cable that has 100 or 120 ohm impedance. fluc

23rd April 2008, 05:52 PM	#2
BWRX diyAudio Moderator Emeritus Join Date: Jan 2005 Location: Pennsylvania	If you parallel a couple strands of cat5e cable the impedance will be cut in half. If you already have the cat5e cable why not try it out and see how it works. 200m is a pretty long run. __________________ Brian

24th April 2008, 10:53 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, presumably if both ends of the cable are terminated correctly then the actual cable impedance does not matter. One could use 45/50ohm (Coax) or 75ohm (coax) or 110ohm (UTP) and choose the correct termination values. BWRX, comments please. __________________ regards Andrew T.

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25th April 2008, 06:30 PM	#4
fluc diyAudio Member Join Date: Mar 2008	Thanks for the reply.

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