TDA8566Q / TDA1562Q questions - 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 4th May 2013, 01:26 PM   #1
RicY is offline RicY  Latvia
diyAudio Member
 
Join Date: Oct 2009
Default TDA8566Q / TDA1562Q questions

Hello,

I have got some BMW Hifi DSP amps lyinig around for some time. They have got no optical converter parts or heatsinks, only the amp section, so they are just for parts. There are some tda8566q and tda1562q chips in there, that got my mind going for making a simple 12VDC powered amp, but reading the pinouts i got to a problem.

Theese chips have diagnostic/mode switching outputs. Does it mean that the chips cant be powered without a microprocessor thingy? And other thing is the tda1562q has IN+, IN-, Sgnd pins. What for is the Sgnd pin?

Sorry for grammatical mistakes.
  Reply With Quote
Old 4th May 2013, 01:57 PM   #2
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Sgnd is signal ground. These are straightforward "analogue" chips. No uP required.
__________________
-------------------------------------------------------
A simulation free zone. Design it, build it, test it.
  Reply With Quote
Old 4th May 2013, 02:30 PM   #3
RicY is offline RicY  Latvia
diyAudio Member
 
Join Date: Oct 2009
So it means that IN+ , IN-, Sgnd is menant for balanced signal input?
  Reply With Quote
Old 4th May 2013, 04:20 PM   #4
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Not exactly

In + and In - are the non inverting and inverting inputs just like an opamp. Signal ground means a clean ground uncontaminated by any PSU noise.
__________________
-------------------------------------------------------
A simulation free zone. Design it, build it, test it.
  Reply With Quote
Old 4th May 2013, 08:42 PM   #5
RicY is offline RicY  Latvia
diyAudio Member
 
Join Date: Oct 2009
Ok. Kinda got it. Drew a schematic based on my understanding and some internet digging.
Attached Images
File Type: png car....png (18.9 KB, 64 views)
  Reply With Quote
Old 5th May 2013, 12:19 AM   #6
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: 98
Send a message via MSN to abraxalito Send a message via Yahoo to abraxalito Send a message via Skype™ to abraxalito
I have a schematic for a TDA8566 amp on my blog - best sounding chipamp I've ever come across when the PSU is low enough impedance The chip is opamp-like but actually its an AFA - 'Active Feedback Amp' of the kind devised by Barrie Gilbert I believe.
__________________
It doesn't have to take the form of a conspiracy, rather a consensus... James H Kunstler
  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
Quick Question (TDA1562Q) crucialfix Chip Amps 11 5th October 2012 09:31 PM
Amplifiers based on TDA1562Q chips samod Swap Meet 5 12th June 2011 03:24 PM
unworking TDA1562q amplifier blck88 Car Audio 1 25th March 2005 10:55 PM
Bridge Tda1562q?? arasuk Car Audio 3 31st January 2005 06:42 AM
building an amp with the Tda1562q pjpoes Car Audio 1 28th January 2005 04:08 AM


New To Site? Need Help?

All times are GMT. The time now is 05:22 AM.


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