Balanced -> Unbalanced DRV134 the best? - diyAudio
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Old 9th December 2006, 06:10 AM   #1
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Default Balanced -> Unbalanced DRV134 the best?

I'm looking for alterantives to DRV134 for converting a balanced signal into an unbalanced one for feeding a power amp. DRV134 is wellknown but anyone who knows about any "high grade" alternative? It's also good if it can be found in SO08-14 or similar.
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Old 11th November 2009, 11:21 AM   #2
Electrons are yellow and more is better!
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Old 11th November 2009, 01:34 PM   #3
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All you need is a differential amplifier. But good amplifiers accept differential signals directly.
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Old 11th November 2009, 03:53 PM   #4
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I"m pretty sure the DRV134 is for converting a Unballanced signal into a Ballanced signal not the other way arround ....

if you go to figure 2 on this page it shows how to use an opamp to go from ballanced to unballanced ...

Balanced Line Driver & Receiver


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Old 11th November 2009, 03:59 PM   #5
Electrons are yellow and more is better!
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The topic is wrong... I ment as I wrote unbalanced to balanced.....
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Old 11th November 2009, 04:04 PM   #6
Minion is offline Minion  Canada
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Quote:
Originally Posted by peranders View Post
The topic is wrong... I ment as I wrote unbalanced to balanced.....

Sorta figued that .... Either way that same link has a good circuit for going Unballanced to ballanced , in my opinion better sounding than the DRV134 and really not much more complicated ....


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Old 11th November 2009, 04:54 PM   #7
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THAT inc. makes a IC that has seen some print that its a better device than the Texas Inst. part, but I don't know if thats true or not. Given that most use the TI part for a pro audio use, not an audiophile one, its possible that a well designed descrete unit would be better - I looked at the issue when I was having a noise problem with a noisy ballast in my big inch TV. Sonically, it made more sense to fix the TV, so thats what I did. Either way, the chips are so cheap, build a prototype of each and test - the powersupply for the unit will cost 10 times the chip (which TI will sample).
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