AD815 as I/V converter and pre? - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

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
Reply
 
Thread Tools Search this Thread
Old 25th April 2014, 03:44 PM   #1
diyAudio Member
 
Join Date: Aug 2012
Default AD815 as I/V converter and pre?

For the I/v converter section many say that you need a faster opamp and I see many people use opa627 but people who tried ad815 even said its better than 627 so im thinking to use AD815 as I/V converter being with slew of 900V/usec.

any suggestions or inputs one would give? AD815 is cheaper as well.
  Reply With Quote
Old 25th April 2014, 09:58 PM   #2
diyAudio Member
 
Join Date: Jul 2003
Location: Columbus, Mississippi
See threads about this chip on DIYHIFI.com.

Greg in Mississippi
__________________
Everything matters!
  Reply With Quote
Old 28th April 2014, 01:23 AM   #3
diyAudio Member
 
abraxalito's Avatar
 
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Blog Entries: 102
Send a message via MSN to abraxalito Send a message via Yahoo to abraxalito Send a message via Skype™ to abraxalito
I'm using AD815 in my Ozone DAC - its great and excellent value. I don't use it to do active I/V, rather I use passive then filter and post-amplify with AD815. Can't beat it for the price I pay here but it does need a very clean supply - 10uF or 22uF 1206 ceramics across the pins. One great advantage of this earlier generation part compared to the later ones is it works down to very low voltages - I run around 5-6V total supply.
__________________
No matter if we meanwhile surrender every value for which we stand, we must strive to cajole the majority into imagining itself on our side - Everett Dean Martin
  Reply With Quote
Old 28th April 2014, 11:57 PM   #4
Eldam is offline Eldam  France
diyAudio Member
 
Join Date: Sep 2012
Location: At home, sweet sound home...
Hi Abrax, I had a look at your post i/v passive filtering on your blog (so: prestage before the AD561 gain).

How many 680 uH TDK 20% do you need to buy for finding one at 600 uH ?

I like you new tea caps tower... on a back bag ? for trekks ? 30 minutes of autonomie.....
  Reply With Quote
Old 29th April 2014, 12:04 AM   #5
diyAudio Member
 
abraxalito's Avatar
 
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Blog Entries: 102
Send a message via MSN to abraxalito Send a message via Yahoo to abraxalito Send a message via Skype™ to abraxalito
A very good question about the inductors - I'll answer that over on the blog - in the stack-a-DAC posting rather than go OT here.
__________________
No matter if we meanwhile surrender every value for which we stand, we must strive to cajole the majority into imagining itself on our side - Everett Dean Martin
  Reply With Quote
Old 29th April 2014, 12:27 AM   #6
diyAudio Member
 
scott wurcer's Avatar
 
Join Date: Jan 2004
Location: cambridge ma
Quote:
Originally Posted by rhythmsandy View Post
AD815 is cheaper as well.
Some serious irony there.
__________________
"This logos holds always but humans always prove unable to understand it, both before hearing it and when they have first heard it."
  Reply With Quote
Old 29th April 2014, 12:41 AM   #7
diyAudio Member
 
abraxalito's Avatar
 
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Blog Entries: 102
Send a message via MSN to abraxalito Send a message via Yahoo to abraxalito Send a message via Skype™ to abraxalito
I get AD815 here in China at 6 for $1 - I suspect they're recycled from older ADSL cards. A wonderful bargain.

@Eldam - the blog's updated now
__________________
No matter if we meanwhile surrender every value for which we stand, we must strive to cajole the majority into imagining itself on our side - Everett Dean Martin
  Reply With Quote
Old 29th April 2014, 01:49 PM   #8
diyAudio Member
 
Join Date: Jul 2003
Location: Columbus, Mississippi
Try here for some discussion:

DIYHiFi.org • View topic - AD815 preamp

Greg in Mississippi
__________________
Everything matters!
  Reply With Quote
Old 29th April 2014, 02:08 PM   #9
diyAudio Member
 
scott wurcer's Avatar
 
Join Date: Jan 2004
Location: cambridge ma
Quote:
Originally Posted by abraxalito View Post
I get AD815 here in China at 6 for $1 - I suspect they're recycled from older ADSL cards. A wonderful bargain.

@Eldam - the blog's updated now
That's funny, I think the 100K price break was $2.50 or so in 1998 dollars.
__________________
"This logos holds always but humans always prove unable to understand it, both before hearing it and when they have first heard it."
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
AD815 pre-amp driving gainclone Dr.H Chip Amps 12 19th February 2014 04:55 PM
The AC spark noise from the AD815 pre dean863249 Chip Amps 8 25th June 2013 04:15 AM
opa627 vs AD815 rhythmsandy Parts 6 27th October 2012 09:23 PM
FS: AD815 preamp cuibono Swap Meet 5 10th December 2010 02:31 AM
It's my AD815 headamp Kochkurov Maxim Chip Amps 16 11th May 2006 11:44 AM


New To Site? Need Help?

All times are GMT. The time now is 10:02 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2