OPA5xx

kinser · 18th November 2004, 06:17 PM

Hi all,
I have the following power op amps:
1.OPA541AP
2.OPA547T
3.OPA548T
4.OPA549T
Could someone tell me what is the most power these chips chan deliver @4 Ohms and @8 Ohms? and @ what voltages? I whant to drive four 4 Ohm speakers and three 8 Ohm speakers off seven different chips!

(multi-channel amp)

Thanks,
Kinser

kinser · 18th November 2004, 07:58 PM

Anyone?

Maby the gainclone builders...?

Kinser

gengcard · 19th November 2004, 08:26 AM

I think OPA549 is better for your requirement.

richie00boy · 19th November 2004, 10:15 AM

I'm sure if you look at the datasheet the information will be very easy to find. Download it from the TI website.

Perhaps we need an addition to RTFM -- RTFDS

till · 19th November 2004, 11:12 AM

doen´t TI send you an email with link to the datasheet everytime they send you a sample???

Why don´t you look which part is best for your application, and after that order a sample?

theChris · 19th November 2004, 01:47 PM

i don't think the TI sheet is nice at advertising power so much. they just tell the max output current. National labels the ICs by power. further national say the lm3875 is 4ohm stable, and yet people here might suggest otherwise.

till · 19th November 2004, 04:40 PM

They give an application note with a complete audio amp, a table with those different OPAs and wattage is to find in that. It was linked some times in older threads on this board, so you only need to search.

18th November 2004, 06:17 PM	#1
kinser diyAudio Member Join Date: Jan 2004 Location: R'aanana	OPA5xx Hi all, I have the following power op amps: 1.OPA541AP 2.OPA547T 3.OPA548T 4.OPA549T Could someone tell me what is the most power these chips chan deliver @4 Ohms and @8 Ohms? and @ what voltages? I whant to drive four 4 Ohm speakers and three 8 Ohm speakers off seven different chips! (multi-channel amp) Thanks, Kinser

19th November 2004, 01:47 PM	#6
theChris diyAudio Member Join Date: Dec 2001 Location: SIUE, Illinois, USA	i don't think the TI sheet is nice at advertising power so much. they just tell the max output current. National labels the ICs by power. further national say the lm3875 is 4ohm stable, and yet people here might suggest otherwise. __________________ if only it could be used for good, not evil...

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

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

18th November 2004, 07:58 PM	#2
kinser diyAudio Member Join Date: Jan 2004 Location: R'aanana	Anyone? Maby the gainclone builders...? Kinser

19th November 2004, 08:26 AM	#3
gengcard diyAudio Member Join Date: Jun 2004 Location: Bangkok	I think OPA549 is better for your requirement.

19th November 2004, 10:15 AM	#4
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	I'm sure if you look at the datasheet the information will be very easy to find. Download it from the TI website. Perhaps we need an addition to RTFM -- RTFDS

19th November 2004, 11:12 AM	#5
till Banned Join Date: Apr 2002 Location: Germany, Clausthal	doen´t TI send you an email with link to the datasheet everytime they send you a sample??? Why don´t you look which part is best for your application, and after that order a sample?

19th November 2004, 04:40 PM	#7
till Banned Join Date: Apr 2002 Location: Germany, Clausthal	They give an application note with a complete audio amp, a table with those different OPAs and wattage is to find in that. It was linked some times in older threads on this board, so you only need to search.

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