testing a single ended or differential topology

Stefanoo · 26th October 2007, 11:43 AM

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.

EUVL · 26th October 2007, 12:03 PM

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.

Patrick

Stefanoo · 26th October 2007, 01:15 PM

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.

EUVL · 26th October 2007, 01:43 PM

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.

Patrick

Stefanoo · 26th October 2007, 03:02 PM

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.

Stefanoo · 26th October 2007, 03:06 PM

ahhh.......do you know where i can find this part????....

do you have, by chance....any suggestion?

jacco vermeulen · 26th October 2007, 03:20 PM

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)

Stefanoo · 26th October 2007, 03:27 PM

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......

jacco vermeulen · 26th October 2007, 03:30 PM

They are taught to speak German in highschool ?

drv134

Stefanoo · 26th October 2007, 03:41 PM

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......

26th October 2007, 11:43 AM	#1
Stefanoo diyAudio Member Join Date: Apr 2006 Location: italia - ora USA -WI	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. __________________ Stefano

26th October 2007, 01:15 PM	#3
Stefanoo diyAudio Member Join Date: Apr 2006 Location: italia - ora USA -WI	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. __________________ Stefano

26th October 2007, 03:02 PM	#5
Stefanoo diyAudio Member Join Date: Apr 2006 Location: italia - ora USA -WI	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. __________________ Stefano

26th October 2007, 03:06 PM	#6
Stefanoo diyAudio Member Join Date: Apr 2006 Location: italia - ora USA -WI	ahhh.......do you know where i can find this part????.... do you have, by chance....any suggestion? __________________ Stefano

26th October 2007, 03:20 PM	#7
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	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) __________________ Looks like Sponge Bob has killed another thread.


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26th October 2007, 12:03 PM	#2
EUVL diyAudio Member Join Date: Oct 2003	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. Patrick

26th October 2007, 01:43 PM	#4
EUVL diyAudio Member Join Date: Oct 2003	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. Patrick

26th October 2007, 03:27 PM	#8
Stefanoo diyAudio Member Join Date: Apr 2006 Location: italia - ora USA -WI	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...... __________________ Stefano

26th October 2007, 03:30 PM	#9
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	They are taught to speak German in highschool ? drv134 __________________ Looks like Sponge Bob has killed another thread.

26th October 2007, 03:41 PM	#10
Stefanoo diyAudio Member Join Date: Apr 2006 Location: italia - ora USA -WI	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...... __________________ Stefano

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