TDA7057AQ for PC

Gold_xyz · 27th October 2007, 08:43 PM

Hi to all

I have this good IC amp found for built-in PC audio system.

TDA7057AQ = Bridge output stereo with dc volume control.
Supply 12V Output 8W on 8 Ohms

http://www.nxp.com/acrobat/datasheets/TDA7057AQ_4.pdf

also I can reduce the number of cable on my desk.

(only two cable one for each speaker)

and with dc volume control I can drive more channel with
an only (linear) potentiometer...

Rod_T · 27th October 2007, 10:55 PM

Interesting Chip. I particularly like the DC volume input, but the THD values are quite high. I'm not sure you would like the sound... ok for casual use though.

Gold_xyz · 27th October 2007, 11:48 PM

Quote:

Originally posted by Rod_T
Interesting Chip. I particularly like the DC volume input, but the THD values are quite high. I'm not sure you would like the sound... ok for casual use though.

Hi,
Thanks for the answer

THD = 0.3% @ 0.5W (from datasheet) enough high...

perhaps this distorsion comes from dc volume stage...

I need to build a power amplifier PC-card with direct output
speaker connection. (with supply from PC-12V)

27th October 2007, 08:43 PM	#1
Gold_xyz diyAudio Member Join Date: Dec 2005 Location: Italy	TDA7057AQ for PC Hi to all I have this good IC amp found for built-in PC audio system. TDA7057AQ = Bridge output stereo with dc volume control. Supply 12V Output 8W on 8 Ohms http://www.nxp.com/acrobat/datasheets/TDA7057AQ_4.pdf also I can reduce the number of cable on my desk. (only two cable one for each speaker) and with dc volume control I can drive more channel with an only (linear) potentiometer... __________________ My English originates from here

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

27th October 2007, 10:55 PM	#2
Rod_T diyAudio Member Join Date: Oct 2007	Interesting Chip. I particularly like the DC volume input, but the THD values are quite high. I'm not sure you would like the sound... ok for casual use though.

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