SAA7220 running hot?

Rotellian · 3rd October 2003, 08:46 AM

Is it usual for the 7220 and 1541a dac chip to run quite hot? Ive just undone the non-oversampling mod in my cd player with this chipset and have noticed that both appear to be quite hot to the touch on top. The player makes music jsut fine with no distortion so everything appears to be working OK. Is this normal? Cheers

jean-paul · 3rd October 2003, 08:57 AM

Yes, bipolar technology has higher power consumption than the more modern CMOS technology.

There are people that glue coolers on them with a connection to ground. Worth a try ?

Rotellian · 3rd October 2003, 09:42 AM

OK many thanks, guesi d just never noticed before

alean · 4th October 2003, 01:26 PM

To receive the best sound in addition it is necessary to warm up interiors of the device, including microcircuits

Richard C · 4th October 2003, 09:03 PM

An easy mod for this chipset is to make simple L or U-shaped heatsinks out of copper sheet, glue to the top of each chip and connect to ground. The effect of the screening on sound quality is significant and the cooler running will improve reliability and linearity.

3rd October 2003, 08:46 AM	#1
Rotellian diyAudio Member Join Date: Sep 2003 Location: UK	SAA7220 running hot? Is it usual for the 7220 and 1541a dac chip to run quite hot? Ive just undone the non-oversampling mod in my cd player with this chipset and have noticed that both appear to be quite hot to the touch on top. The player makes music jsut fine with no distortion so everything appears to be working OK. Is this normal? Cheers

3rd October 2003, 08:57 AM	#2
jean-paul diyAudio Moderator Emeritus Join Date: Sep 2002 Location: The Netherlands	Yes, bipolar technology has higher power consumption than the more modern CMOS technology. There are people that glue coolers on them with a connection to ground. Worth a try ? __________________ It's only audio

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3rd October 2003, 09:42 AM	#3
Rotellian diyAudio Member Join Date: Sep 2003 Location: UK	OK many thanks, guesi d just never noticed before

4th October 2003, 01:26 PM	#4
alean diyAudio Member Join Date: Jul 2003 Location: Europe	To receive the best sound in addition it is necessary to warm up interiors of the device, including microcircuits

4th October 2003, 09:03 PM	#5
Richard C diyAudio Member Join Date: Jul 2003 Location: Nottingham, England	An easy mod for this chipset is to make simple L or U-shaped heatsinks out of copper sheet, glue to the top of each chip and connect to ground. The effect of the screening on sound quality is significant and the cooler running will improve reliability and linearity.

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