+/-15V power to a TI PGA2310. 15V regulators sufficient or do I need adjustable?? - 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 27th June 2008, 08:11 PM   #1
diyAudio Member
 
Join Date: Sep 2004
Location: Midwest
Default +/-15V power to a TI PGA2310. 15V regulators sufficient or do I need adjustable??

I'm building a circuit around a Texas Instruments PGA2310 digitally controlled volume controlled and I wanted to know if you guys think +15V and -15V fixed linear regulators are sufficient or if I should use + and - adjustable regulators.

Anybody have any thoughts? I'm wondering because I don't know if it matters if the +/-15V is off a little bit.

Thanks in advance...

TI Webpage: http://focus.ti.com/docs/prod/folder...t/pga2310.html
Datasheet: http://focus.ti.com/lit/ds/symlink/pga2310.pdf
__________________
Is cheap or expensive one hamburger ? - Upupa Epops
  Reply With Quote
Old 27th June 2008, 08:36 PM   #2
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
Technically speaking adjustable regulators usually have better noise specs than fixed regulators. Does it matter? That depends on the rest of your system and how picky you are. I'm fine with using fixed regs, but others avoid them like the plague.

And no, it doesn't matter if the positive and negative supplies don't match exactly as long as you don't exceed the devices voltage limit.
  Reply With Quote
Old 16th July 2008, 12:50 PM   #3
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
Quote:
Originally posted by theAnonymous1
Technically speaking adjustable regulators usually have better noise specs than fixed regulators. Does it matter? That depends on the rest of your system and how picky you are. I'm fine with using fixed regs, but others avoid them like the plague.
With the adjustable regulators you can bypass the ADJ pin with a small electrolytic cap. It will be a lot quieter. Bob Pease from National Semi wrote an article on this in his book "Troubleshooting Analog Circuits".
  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
Adjustable power supply questions rendisha Parts 28 10th June 2013 10:57 AM
Sufficient power for the Fountek JP-2.0? mazeroth Multi-Way 3 20th April 2005 04:37 AM
Adjustable regulated power supply Ford_V6 Solid State 2 1st April 2003 06:03 PM
Bypass your adjustable regulators ADJ pin to ground to hear another veil drop... Dr.H Digital Source 1 1st August 2002 05:48 PM
DIY - Adjustable Power Supply Design vinay Pass Labs 7 20th March 2002 06:46 PM


New To Site? Need Help?

All times are GMT. The time now is 08:42 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