Grounding of opamps. Signal or Power?

Arx · 23rd July 2007, 02:09 AM

If keeping seperate star grounds for signal and power, where would the opamps' (buffer and servo) power ground go to? I would assume signal ground, just due to the low currents involved. Is this correct?

-Nick

AndrewT · 23rd July 2007, 09:47 AM

no.
The decoupling across the opamp sends pulses into the power ground. Try to return these pulses separate from the clean audio ground.

23rd July 2007, 02:09 AM	#1
Arx diyAudio Member Join Date: Aug 2003 Location: North Vancouver, B.C.	Grounding of opamps. Signal or Power? If keeping seperate star grounds for signal and power, where would the opamps' (buffer and servo) power ground go to? I would assume signal ground, just due to the low currents involved. Is this correct? -Nick

23rd July 2007, 09:47 AM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	no. The decoupling across the opamp sends pulses into the power ground. Try to return these pulses separate from the clean audio ground. __________________ regards Andrew T.

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
signal wiring / chassis grounding - Aikido	cbutterworth	Tubes / Valves	0	7th December 2006 05:18 PM
FS: Power Chip OpAmps and other OpAmps & D to A Converter	dtm1962	Swap Meet	4	12th January 2006 11:07 PM
Grounding Idea for single opamps	Franz G	Chip Amps	10	28th December 2005 03:29 PM
Power grounding question	falcott	Chip Amps	0	21st September 2004 08:50 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

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