Cable for audio balanced line driver (drv134 ) - diyAudio
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Old 23rd April 2008, 03:48 PM   #1
fluc is offline fluc  Canada
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Join Date: Mar 2008
Default 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.

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Old 23rd April 2008, 04:52 PM   #2
BWRX is offline BWRX  United States
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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.
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Old 24th April 2008, 09:53 AM   #3
AndrewT is offline AndrewT  Scotland
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Location: Scottish Borders
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.

comments please.
regards Andrew T.
Sent from my desktop computer using a keyboard
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Old 25th April 2008, 05:30 PM   #4
fluc is offline fluc  Canada
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Thanks for the reply.
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