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testing a single ended or differential topology
testing a single ended or differential topology
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Old 26th October 2007, 11:43 AM   #1
Stefanoo is offline Stefanoo  Italy
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Default testing a single ended or differential topology

This is probabily a doomed question but....

the majority of the signal generators out are single ended...which means that they only have one output.

speaking of balance circuitry......if you have a signal generator with the above characteristics......it is true that it's possible to shoten the in(-) and evaluate the topology just as a single ended one.....

But.... what if i would like to have an input differential signal test and test the entire topolgy?


Is it convenient to transform somehow the signal into a differential version?

How do you guys generally do to test , let's say, a differential preamplifier or power amp?

Thanks in advance for the attention.
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Old 26th October 2007, 12:03 PM   #2
EUVL is offline EUVL  Europe
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Simplest solution is to get yourself a DRV134 chip and 4 9V-batteries. Within half an hour of soldering, you have a balanced driver for single ended signals.

Not for listening music, but good enough for test signals.


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Old 26th October 2007, 01:15 PM   #3
Stefanoo is offline Stefanoo  Italy
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Oh really?

Do you have, by chance a simple schematic ...an application... for such as part to make it run as a differential signal generator (sine, sqaure triangolar wave)?

I appreciate very much your suggestion.
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Old 26th October 2007, 01:43 PM   #4
EUVL is offline EUVL  Europe
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Just Google and download the datasheet. There is a standard circuit.

I presume you have a normal, ground referenced signal generator in the first place.

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Old 26th October 2007, 03:02 PM   #5
Stefanoo is offline Stefanoo  Italy
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ah ok...now it's clear....

so normal single end signal generator and then using this component to have a differential output signal.

Thanks.... i'll download the datasheet.
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Old 26th October 2007, 03:06 PM   #6
Stefanoo is offline Stefanoo  Italy
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ahhh.......do you know where i can find this part????....

do you have, by chance....any suggestion?
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Old 26th October 2007, 03:20 PM   #7
jacco vermeulen is offline jacco vermeulen  Netherlands
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Schuro in Kassel(D) undoubtedly offers it, check their online pages.
or RS-Components Italy, for a few euros more.
(instead of the TI DRV134 you could look for AD SSM2142)
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Old 26th October 2007, 03:27 PM   #8
Stefanoo is offline Stefanoo  Italy
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it's all in germaaaannnn.......or at least it's me that i'm not able to find the english version.....i don't know......how can the rest of the people on the world or even in Europe read it?.....

gggrrr......
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Old 26th October 2007, 03:30 PM   #9
jacco vermeulen is offline jacco vermeulen  Netherlands
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They are taught to speak German in highschool ?

drv134
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Old 26th October 2007, 03:41 PM   #10
Stefanoo is offline Stefanoo  Italy
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thanks a lot....
do you think they accept an order for just one part?


anyways ..... thanks for the information.



...as a note....hihi....i was taught in high school...and even before....to speak Italian......
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