New TI chip unbal to bal

markp · 25th January 2005, 06:14 PM

Take a look at this new TI chip for use as unbalanced to balanced driver: http://www.ti.com/corp/docs/landing/...+EM+ths4509-em

Bricolo · 25th January 2005, 06:25 PM

A little off topic, but:

on theyr curves, what are HD2 and HD3? I assume they're not signal harmonics since they are at a lower frequency, and that HD3 is closer to the signal than HD2 is

markp · 25th January 2005, 06:27 PM

Quote:

Originally posted by Bricolo
A little off topic, but:

on theyr curves, what are HD2 and HD3? I assume they're not signal harmonics since they are at a lower frequency, and that HD3 is closer to the signal than HD2 is

I think they are harmonic distortion curves.

janneman · 25th January 2005, 06:40 PM

Quote:

Originally posted by Bricolo
A little off topic, but:

on theyr curves, what are HD2 and HD3? I assume they're not signal harmonics since they are at a lower frequency, and that HD3 is closer to the signal than HD2 is

HD2 is 2nd harmonic distortion, HD3 is 3rd harmonic distortion. In a differential amp you would expect HD2 to be lower than HD3, which is in the curves (up to a certain high frequency where it breaks down).

Jan Didden

Bricolo · 25th January 2005, 07:00 PM

agreed, but harmonics at a lower frequency thant the fundamental?

gatedriver · 25th January 2005, 07:08 PM

Hi,

the power supply is limited to +- 2.5V ... this is a bit too low for line level audio apps.

the package is a bit hard to work with for non-machines.
less than 0.5mm contact spacing..
the contacts are just 0.2mm high (see scba017d )

regards
T

pinkmouse · 25th January 2005, 07:09 PM

Very low supply voltage, and a tiny package. I can't think of an immediate use I would have for them.

scott wurcer · 25th January 2005, 07:09 PM

Quote:

Originally posted by Bricolo
agreed, but harmonics at a lower frequency thant the fundamental?

Sub-nyquist sampling is common in communications systems.

Upupa Epops · 25th January 2005, 07:15 PM

It is shot to the dark - this circuit isn't for audio using. This discussion ist losing time

.

Nelson Pass · 25th January 2005, 08:16 PM

Looks like a variation on the THS4130, whose circuit is
nicely described in my patent #5,376,899.

25th January 2005, 06:14 PM	#1
markp diyAudio Member Join Date: Oct 2003 Location: L.A., CA	New TI chip unbal to bal Take a look at this new TI chip for use as unbalanced to balanced driver: http://www.ti.com/corp/docs/landing/...+EM+ths4509-em __________________ If it sounds good... it is good!

25th January 2005, 06:25 PM	#2
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	A little off topic, but: on theyr curves, what are HD2 and HD3? I assume they're not signal harmonics since they are at a lower frequency, and that HD3 is closer to the signal than HD2 is __________________ Just remember: in theory there's no difference between theory and practice. But in practice it usually is quite a bit difference... Bob Pease

25th January 2005, 07:09 PM	#7
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Very low supply voltage, and a tiny package. I can't think of an immediate use I would have for them. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
converting BAL to UNBAL using tubes and without transformers	sunrise	Tubes / Valves	101	24th November 2008 07:26 PM
PCM1804 bal/unbal adc	meta	Digital Source	14	7th February 2007 06:44 AM
Bal-Unbal-Bal Cable Wiring	richie00boy	Everything Else	3	3rd February 2005 11:08 AM
Bi-amp with Aleph P bal. and unbal. outputs	Sony	Pass Labs	3	21st December 2004 07:09 PM
unbal. linedrive/lineamp	Per	Solid State	2	25th October 2002 11:25 AM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

25th January 2005, 07:00 PM	#5
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	agreed, but harmonics at a lower frequency thant the fundamental? __________________ Just remember: in theory there's no difference between theory and practice. But in practice it usually is quite a bit difference... Bob Pease

25th January 2005, 07:08 PM	#6
gatedriver diyAudio Member Join Date: Nov 2004 Location: here	Hi, the power supply is limited to +- 2.5V ... this is a bit too low for line level audio apps. the package is a bit hard to work with for non-machines. less than 0.5mm contact spacing.. the contacts are just 0.2mm high (see scba017d ) regards T

25th January 2005, 07:15 PM	#9
Upupa Epops diyAudio Member Join Date: Aug 2003 Location: Prague,Czech Republic	It is shot to the dark - this circuit isn't for audio using. This discussion ist losing time .

25th January 2005, 08:16 PM	#10
Nelson Pass The one and only Join Date: Mar 2001	Looks like a variation on the THS4130, whose circuit is nicely described in my patent #5,376,899.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read