LM4562 opamp on +\- 18v - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, 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 1st June 2011, 08:29 PM   #1
Koenjer is offline Koenjer  Netherlands
diyAudio Member
 
Join Date: Oct 2009
Default LM4562 opamp on +\- 18v

Does any one has some experience with the LM4562 using it on +\- 18v ?

According to some datasheet itīs ratings are +\- 17v.

thanks for the awnsers.
  Reply With Quote
Old 1st June 2011, 08:52 PM   #2
diyAudio Member
 
Join Date: Jan 2008
Location: Virginia
I wouldn't do it. If the needed voltage is that high, probably you don't need the 4562 (or other low noise) in there...
  Reply With Quote
Old 1st June 2011, 09:06 PM   #3
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
maybe you should use the LME 49860. same circuit, but +/- 22v rating
  Reply With Quote
Old 2nd June 2011, 08:55 AM   #4
Koenjer is offline Koenjer  Netherlands
diyAudio Member
 
Join Date: Oct 2009
Hi PDul,

good idea, to bad that those are a lot more expensive

I can also swap TL072 with this one isn't it?
  Reply With Quote
Old 2nd June 2011, 10:16 AM   #5
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
The price is not that much higher, But of course depending on how many you need.
The TL072 is rated +/- 18v so no headroom for error in the ps.
Another approach can be to lower the voltage locally to +/- 15v. That will give you a lot
more opamps to choose from.
  Reply With Quote
Old 3rd June 2011, 08:00 AM   #6
Koenjer is offline Koenjer  Netherlands
diyAudio Member
 
Join Date: Oct 2009
It's an Rotel Surround processor.

The rail is +\- 18v. I'm not willing to change that.
As LPF after the DAC they use TL072 and for outputs NJM5532.

I would like to swap the opamps and upgade some Caps. I think i'm swapping all of these opamps for LME 49860's.

The only downside, there are +\- 24 opamps. But I'm only swapping the output one's. So that leaves me with around 12 opamps.
  Reply With Quote
Old 4th June 2011, 10:46 AM   #7
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
The OPA2604 is good up to -/+24volts and (IMO) is still one of the best sounding. Its ideal to replace the TLO72 and 5532.

If the Rotel uses -/+18 volts then another possibility is just to alter the regulator arrangement to give < -/+17 volts if you want to try the LM4562.
__________________
-------------------------------------------------------
Installing and using LTspice. From beginner to advanced.
  Reply With Quote
Old 7th June 2011, 01:43 AM   #8
diyAudio Member
 
Andersonix's Avatar
 
Join Date: Jan 2004
Location: Silicon Valley
OPA1642 is +/-18V "max" (40V absolute max). I'm looking forward to trying these now that I've tasted the LM4562.
  Reply With Quote
Old 7th June 2011, 03:22 AM   #9
diyAudio Member
 
Join Date: Nov 2009
Location: Los Angeles
Quote:
Originally Posted by Koenjer View Post
Does any one has some experience with the LM4562 using it on +\- 18v ?

According to some datasheet itīs ratings are +\- 17v.

thanks for the awnsers.
Do you think the manufacturer doesn't know how to use their devices? 36 Volt is the 'absolute maximum rating'. That means your never go there. So don't go there. Build a dual 17 supply and use that. If you want a higher voltage chip then use that.

  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
Problems with LM4562 Opamp in Tjoeb '99 cd-player ddutch Digital Source 29 11th October 2012 12:24 AM
FS: (2) 18v+18v 400VA Antek Toroid Transformers mezz64 Swap Meet 3 5th May 2010 05:10 PM
Plitron 300VA 230V/18V-0-18V for Firstwatt khundude Swap Meet 2 8th September 2009 07:06 PM
headphone amp with lm4562 opamp umut1001 Headphone Systems 23 15th April 2008 02:08 AM
WTB: 18v-0-18v 40va transformer cowanrg Parts 2 3rd October 2003 03:41 AM


New To Site? Need Help?

All times are GMT. The time now is 05:39 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Đ1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2