best opamp bypass caps...

Htguy · 7th February 2006, 12:49 PM

Hi,

Just looking for opinoins on opamp bypass caps for BB opamps. I was leaning towards silver mica but have seen comments that they are not the best for it. So would Polystyrene be a better choice?

Thanks

God bless....

Mark

jackinnj · 7th February 2006, 01:26 PM

for power supply bypass it's best to use the smallest caps that you can solder in -- for me that's 0603 or 0805 surface mount ceramics -- the problem with a silver mica is that the leads are long so you are placing a lot of distance between the device and its ground plane which negates the bypass.

both analog devices and texas instruments have good application notes on bypass and PCB layout.

this apnote on ADI's website is particularly good:
http://www.analog.com/library/analog...-09/layout.pdf

7th February 2006, 12:49 PM	#1
Htguy diyAudio Member Join Date: Aug 2003 Location: Tucson AZ	best opamp bypass caps... Hi, Just looking for opinoins on opamp bypass caps for BB opamps. I was leaning towards silver mica but have seen comments that they are not the best for it. So would Polystyrene be a better choice? Thanks God bless.... Mark

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
bypass caps for bypassing mylar caps?	crippledchicken	Multi-Way	4	27th February 2008 04:24 AM
Bypass caps on crossover caps... :D	quickshift	Multi-Way	19	27th November 2005 12:59 PM
opamp bypass caps with regulated PS	Russ White	Chip Amps	14	25th May 2005 02:36 PM
PSU bypass caps	Sunsun22	Chip Amps	2	30th August 2004 01:02 PM
Bypass of the internal opamp of a dac : missed	00940	Digital Source	6	5th July 2004 06:36 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

7th February 2006, 01:26 PM	#2
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	for power supply bypass it's best to use the smallest caps that you can solder in -- for me that's 0603 or 0805 surface mount ceramics -- the problem with a silver mica is that the leads are long so you are placing a lot of distance between the device and its ground plane which negates the bypass. both analog devices and texas instruments have good application notes on bypass and PCB layout. this apnote on ADI's website is particularly good: http://www.analog.com/library/analog...-09/layout.pdf

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)