Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

Is This circut suitable for an OPA541?
Is This circut suitable for an OPA541?
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 28th April 2005, 05:23 AM   #1
bigmike216 is offline bigmike216  Canada
diyAudio Member
 
Join Date: Jul 2004
Location: BC, Canada
Default Is This circut suitable for an OPA541?

Attatched a schematic.. is it suitable?

Would the same curcut work with the opa549 and 548, provided I made the proper adjustments to the pin numbers of the chip in the schematic?
Attached Images
File Type: gif opa541.gif (3.0 KB, 318 views)
  Reply With Quote
Old 28th April 2005, 01:34 PM   #2
macboy is offline macboy  Canada
diyAudio Member
 
Join Date: Oct 2003
Location: Ottawa, Canada
Looks like you have a gain of 22, which is way too high for the OPA541. Unless this is a subwoofer amp, reduce the gain, or your high frequency response will suffer. If you need more gain, add a simple pre-amp stage with a good quality opamp.
  Reply With Quote
Old 28th April 2005, 03:05 PM   #3
bigmike216 is offline bigmike216  Canada
diyAudio Member
 
Join Date: Jul 2004
Location: BC, Canada
what is a suitable gain?
  Reply With Quote
Old 28th April 2005, 03:38 PM   #4
macboy is offline macboy  Canada
diyAudio Member
 
Join Date: Oct 2003
Location: Ottawa, Canada
The gain-bandwidth product of the OPA541 is 1.6 MHz. In order to keep the audio band frequency response of the amp clear of the effects (in both amplitude and phase) of limited bandwidth, I would recommend keeping the bandwith above 100 kHz. That means that the maximum gain should be around 16. The OPA549 is even more restricted with its GBP of 0.9 MHz. The National LMxxxx chips generally have a much higher GBP (e.g. 8 MHz for LM3886) so they can be run at higher gain than these TI chips.
  Reply With Quote

Reply


Is This circut suitable for an OPA541?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
circut card cleaning dognut Parts 7 22nd April 2009 09:04 PM
New to Circut design:help! zolthoff Power Supplies 2 18th March 2007 02:17 AM
Circut bending guitargully Instruments and Amps 4 20th July 2005 08:31 AM
Cap, Res, Ind Circut Calculation Software Allan Multi-Way 0 26th March 2004 09:28 PM
Suitable regulated/filtered 4volt battery-valve power supply suitable for 6+ valves? Layberinthius Tubes / Valves 0 11th March 2004 08:49 PM


New To Site? Need Help?

All times are GMT. The time now is 10:13 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki