"Bivoj" - the new chipamp

PMA · 1st December 2006, 09:51 PM

Hello guys,

"Bivoj" - the new chipamp was born. Please see the attached image.

Cheers,
Pavel

AKN · 1st December 2006, 10:04 PM

Hi PMA,

Nice build!
I suppose:
http://focus.ti.com/lit/ds/symlink/opa549.pdf

How does it sound?

PMA · 1st December 2006, 10:09 PM

Hi For Fun,

I needed an amp for mz notebook.

Sounds great

, notebook + USB SB 24bit Live! + Bivoj + Jamo E600

AKN · 1st December 2006, 10:14 PM

Quote:

Sounds great , notebook + USB SB 24bit Live! + Bivoj + Jamo E600

darkfenriz · 1st December 2006, 10:16 PM

From datasheet:
For 20kHz it has positive PSSR of 20dB and THD of 0.2%.
Typical total questient current is 26mA and slew rate at G=1 is only 9V/us.

Pavel, why did you choose this one

PMA · 1st December 2006, 10:23 PM

Asked BB for samples 3 years ago. Found them recently in my stock and it took me some 15 minutes to prepare PCB files now

darkfenriz · 1st December 2006, 10:29 PM

pinkmouse · 2nd December 2006, 12:08 AM

Yeah, the OPA549 is a nice chip - my current project:

PMA · 2nd December 2006, 05:33 AM

Al -
nice job! But do not hijack my valuable thread

How did you make your PCB?

neutron7 · 2nd December 2006, 06:00 AM

Obviously He nibbled the copper off! mouse teeth continuously grow and need to be worn down by constant nibbling.

1st December 2006, 10:04 PM	#2
AKN No snake oil diyAudio Member Join Date: Aug 2005 Location: In the middle of Sweden	Hi PMA, Nice build! I suppose: http://focus.ti.com/lit/ds/symlink/opa549.pdf How does it sound? __________________ / Anders

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1st December 2006, 10:09 PM	#3
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	Hi For Fun, I needed an amp for mz notebook. Sounds great , notebook + USB SB 24bit Live! + Bivoj + Jamo E600

1st December 2006, 10:16 PM	#5
darkfenriz diyAudio Member Join Date: Jun 2004 Location: Warsaw	From datasheet: For 20kHz it has positive PSSR of 20dB and THD of 0.2%. Typical total questient current is 26mA and slew rate at G=1 is only 9V/us. Pavel, why did you choose this one

1st December 2006, 10:23 PM	#6
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	Asked BB for samples 3 years ago. Found them recently in my stock and it took me some 15 minutes to prepare PCB files now

1st December 2006, 10:29 PM	#7
darkfenriz diyAudio Member Join Date: Jun 2004 Location: Warsaw

2nd December 2006, 05:33 AM	#9
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	Al - nice job! But do not hijack my valuable thread How did you make your PCB?

2nd December 2006, 06:00 AM	#10
neutron7 diyAudio Member Join Date: Dec 2003 Location: Toronto Canada	Obviously He nibbled the copper off! mouse teeth continuously grow and need to be worn down by constant nibbling.