Which chips are out there? - 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 3rd March 2007, 01:40 AM   #1
Mayday is offline Mayday  Sweden
diyAudio Member
 
Join Date: Mar 2004
Location: Sweden
Question Which chips are out there?

Which are the chips out there that are suitable for chipamps?

Manufacturer of each chip is appreciated.

Thanks!

/Mayday
  Reply With Quote
Old 3rd March 2007, 02:01 AM   #2
Arx is offline Arx  Canada
diyAudio Member
 
Join Date: Aug 2003
Location: North Vancouver, B.C.
Default Re: Which chips are out there?

Quote:
Originally posted by Mayday
Which are the chips out there that are suitable for chipamps?

Manufacturer of each chip is appreciated.

Thanks!

/Mayday

Seriously, this is what the "Have you searched" checkbox is for.

I'd probably start by looking at the National Semiconductor "Overature" series, especially LM3875, 3886, 4780. It's difficult not to find info on those. Google "gainclone" and you'll get about a zillion hits. Probably a good choice if it's your first go at it. There's a variety of others too from practically every chip manufacturer out there.. You could check out TexasInstruments/BurrBrown or Analog devices for a start.

-Nick
  Reply With Quote
Old 3rd March 2007, 02:06 AM   #3
Mayday is offline Mayday  Sweden
diyAudio Member
 
Join Date: Mar 2004
Location: Sweden
Thanks.

I'll admit that I haven't googled this...sorry about that.

I'll do a bit of searching, instead of taking the easy way of asking those who allready know.

/mayday
  Reply With Quote
Old 3rd March 2007, 04:13 AM   #4
Arx is offline Arx  Canada
diyAudio Member
 
Join Date: Aug 2003
Location: North Vancouver, B.C.
No worries. We're all lazy sometimes.

BTW, If you're relatively new to electronics, a kit based on the 3875 is probably one of the easiest places to start. They're totally dead simple to wire up, and won't break the bank.

I built my first chipamp that way. I really didn't need to, since the design is VERY simple, and I'm pretty decent with a soldering iron. I could have wired it point to point without any difficulty, but I figured with the PC boards I could throw it together in a few minutes without thinking.

You'll end up spending more time building the chassis than the amp itself, unless you just screw it to a board with some cut up rca cables

Also a warning: Don't get too hung up on buying "premium" parts. If you've got the $ to blow, and want to experiment, go for it, but it's not like the basic one's significantly worse. I doubt I could tell the difference. The only likely exception being the volume control (assuming you're not using a preamp) You probably still wouldn't hear a difference there under normal circumstances, but cheap pots often don't match the volumes well side to side when you're listening quietly, and they tend to get really scratchy over time.

I bought one from "Precision Electrical Components" (available from digikey) also referred to as a PEC pot on the forums. I felt like I was being a little frivolous at the time spending $25 on a volume knob, but I'm happy I did. Seems well built like it'll last, and tracks very evenly.

-Nick
  Reply With Quote
Old 3rd March 2007, 04:21 AM   #5
Mayday is offline Mayday  Sweden
diyAudio Member
 
Join Date: Mar 2004
Location: Sweden
I've got some PCB's coming in:

Chipamp: dual-mono
Tech-diy: bridged LM4780

And I've requested a local PCB-maker for the prise for 2 more LM3886-PCB's

I'm qurious(spelling?) to try a few different types.

Also thinking of trying some digital chipamps if there are anyone selling PCB's, kits or if I can find gerberfiles.
  Reply With Quote
Old 3rd March 2007, 05:33 AM   #6
Arx is offline Arx  Canada
diyAudio Member
 
Join Date: Aug 2003
Location: North Vancouver, B.C.
Quote:
Originally posted by Mayday

Also thinking of trying some digital chipamps if there are anyone selling PCB's, kits or if I can find gerberfiles. [/B]
That, I'd be very interrested to hear about. Digital input, digital Class D output, all on a single chip. Essentially a dac with speaker level output

Let me know if you run into anything. It would be cool to run something like that off the outputs of a digital filter based crossover. I bet you would still need an inductor to eat the noise though

-Nick
  Reply With Quote
Old 3rd March 2007, 07:02 AM   #7
Mayday is offline Mayday  Sweden
diyAudio Member
 
Join Date: Mar 2004
Location: Sweden
I don't even know if there's an "all-in-one" chip out there, digital that is.

/Mayday
  Reply With Quote
Old 3rd March 2007, 05:28 PM   #8
Arx is offline Arx  Canada
diyAudio Member
 
Join Date: Aug 2003
Location: North Vancouver, B.C.
Probably not, but if you see one, I'd like to hear about it
  Reply With Quote
Old 23rd September 2007, 10:42 AM   #9
mrwhy is offline mrwhy  United Kingdom
diyAudio Member
 
Join Date: Sep 2007
Does anyone know a UK supplier of TDA 7093
  Reply With Quote
Old 23rd September 2007, 12:42 PM   #10
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
You can normally find distributor lists on the manufacturers' sites...
  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
Any 24 bit NOS DAC chips? neutron7 Digital Source 6 29th October 2006 08:48 AM
nte chips odysseybmx414 Chip Amps 1 29th September 2005 08:30 PM
Chips for Chumps aka "Intelligent Chips" jackinnj Solid State 0 15th April 2005 12:37 AM
Best DAC chips 5th element Digital Source 7 7th June 2004 04:08 PM


New To Site? Need Help?

All times are GMT. The time now is 06:29 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