best I/V stage for ad1955 with discrete components

Jaap · 23rd January 2005, 11:02 AM

I am interested to build a new I/V-output stage for my philips dvd 963sa with ad1955 dac inside. I am not interested in opamps.

I am not an expert, just soldering the smart designs of other people. I have searched the forums but I have lost my way. Can somebody point me in the direction of a design that is easy to built.
I have heard of the D1 of Pass, is that usable and still state of the art ? I cannot find the schematic.

Extreme_Boky · 26th January 2005, 01:15 AM

http://www.rockna-line.com/diy/output/output.htm

Regards,
Extreme_Boky

kiwi_abroad · 26th January 2005, 06:17 AM

The problem with the "Rockna" line stage is that it is single ended, and the AD1955 has balanced current outputs. Of course you could build two per chanel, but itwould be nice is a differential I/V circuit existed. Can anyone help with a truly differential, or (better) an X I/V convertor.

Also, remember the AD1955 has quite a high current output, that some I/V's may have problems with if left un-modified.

The D1 I/V convertor is two simple I/V's connected together only at the point where the attenuator works. I've toyed with the idea of using the D1 and AD1955 myself.

You can get the service manual for the D1 from
http://www.passlabs.com/downloads.htm

Cheers, Adrian

23rd January 2005, 11:02 AM	#1
Jaap diyAudio Member Join Date: Dec 2002 Location: Netherlands	best I/V stage for ad1955 with discrete components I am interested to build a new I/V-output stage for my philips dvd 963sa with ad1955 dac inside. I am not interested in opamps. I am not an expert, just soldering the smart designs of other people. I have searched the forums but I have lost my way. Can somebody point me in the direction of a design that is easy to built. I have heard of the D1 of Pass, is that usable and still state of the art ? I cannot find the schematic.

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
AD1955 I/V stage/tube version	SunRa	Digital Source	21	17th April 2012 11:35 AM
Not another discrete I/V stage	georgehifi	Digital Source	1	12th February 2009 10:50 PM
Are Discrete components better than Opamps ?	jsa_ind	Everything Else	51	20th December 2006 08:23 AM
Yadis: Yet another discrete IV stage	hjelm	Digital Source	45	11th June 2004 11:14 AM

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


	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

26th January 2005, 01:15 AM	#2
Extreme_Boky diyAudio Member Join Date: Dec 2003 Location: Sydney	http://www.rockna-line.com/diy/output/output.htm Regards, Extreme_Boky

26th January 2005, 06:17 AM	#3
kiwi_abroad diyAudio Member Join Date: Sep 2001 Location: Wellington, New Zealand	The problem with the "Rockna" line stage is that it is single ended, and the AD1955 has balanced current outputs. Of course you could build two per chanel, but itwould be nice is a differential I/V circuit existed. Can anyone help with a truly differential, or (better) an X I/V convertor. Also, remember the AD1955 has quite a high current output, that some I/V's may have problems with if left un-modified. The D1 I/V convertor is two simple I/V's connected together only at the point where the attenuator works. I've toyed with the idea of using the D1 and AD1955 myself. You can get the service manual for the D1 from http://www.passlabs.com/downloads.htm Cheers, Adrian

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