TDA7264 Mute Pin - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 17th January 2015, 01:20 AM   #1
Tenson is offline Tenson  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: Kent
Default TDA7264 Mute Pin

I'm a little confused about this mute pin. I think that if I connect it to the +V rail the amp will be fully muted, right? To put it in play the mute pin voltage should be about -7V lower than +V. So if my rail is +20v, the mute pin should see about +13V is that correct?

I can't see the mute pin load resistance on the data sheet. Can anyone tell me how to calculate a simple series resistor to place between mute pin and +V rail for the right voltage drop?

Thanks!

Edit: Yes I used a 10V zener to feed the mute pin from the +20V positive rail. Works nicely.

Last edited by Tenson; 17th January 2015 at 03:28 PM.
  Reply With Quote
Old 17th January 2015, 03:25 PM   #2
Tenson is offline Tenson  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: Kent
I got the TDA7264 working It's excellent!

Here is the TDA7492 class-D amp IC I was going to use at first, until I found it has a very high 3rd harmonic regardless of output level. Test is at 0.5V into 6.8 Ohms.

Click the image to open in full size.

Here is the TDA7264 class AB amp. Same test conditions. Interestingly the TDA7492 is rated at 50watts and the TDA7264 is rated at 25watts, but both actually output about 20watts cleanly. This is running on a proper dual rail supply. -30dB less distortion at 5KHz than the class-D chip , worth a bit of heat

Click the image to open in full size.
  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
TDA2052 Mute Pin Sh00pus Chip Amps 1 5th May 2013 05:57 AM
help regarding tda7265 mute pin SHYAM078 Chip Amps 6 30th January 2010 04:25 PM
LM3886 - regulator on the mute pin ? ash_dac Chip Amps 8 2nd September 2006 01:28 PM
Can mute pin on LM3886 (etc.) eliminate popping? cm961 Chip Amps 7 8th October 2004 02:06 PM
Need to connect mute pin on 3886? Hybrid fourdoor Chip Amps 5 24th November 2003 03:07 PM


New To Site? Need Help?

All times are GMT. The time now is 04:26 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright 1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2