How to identify PCM1704?

momokowut · 1st July 2005, 12:04 PM

Could any body please tell me how to identify the grading of PCM1704 (say U,J or K) on the chip package?

A 8 · 1st July 2005, 04:08 PM

Well, it is printed on the chip ie nothing-U, J-J, K-K

momokowut · 1st July 2005, 04:32 PM

My CD player claims that it use PCM1704-K, but only have "PCM1704" marked on the chip.
is it U grade?

A 8 · 1st July 2005, 05:27 PM

It would seem so. Perhaps people here know more about you particular player if you tell us which one it is.

Peter Daniel · 1st July 2005, 06:10 PM

I bought PCM1704 K from Digi-Key. They do not have K markings, but two white dots.

momokowut · 1st July 2005, 11:59 PM

My CD player is Cxxy CD303/200 and no white dot on the chip.

so, it should be U grade, right?

DaKi][er · 3rd July 2005, 04:07 PM

The 2 PCM1704's i got here have been marked with a J, though it isn't of the same material as the rest of the markings on it like it was done later on (as it probably would have been)

Ruach · 9th March 2007, 11:28 PM

I wrote to Texas Instrument regarding the dot markings.

Here is their reply to my query:

"In response to your query on PCM1704 kindly note that due to marking machine issue, we are marking grade rank by white dot on package.

J-grade is one white dot
K-grade is two white dot.

Hence two white dot pcm1704 parts are from TI and is really K-grade PCM1704."

crt · 5th November 2010, 06:30 PM

How about this CHIPS

http://cgi.ebay.com/DAC-IC-PCM1704-/...item19a9f54b3d

They have 3 dots

SoNic_real_one · 5th November 2010, 08:30 PM

On eBay you can find anything

1st July 2005, 12:04 PM	#1
momokowut diyAudio Member Join Date: Jul 2005 Location: HK	How to identify PCM1704? Could any body please tell me how to identify the grading of PCM1704 (say U,J or K) on the chip package?

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
SM5866 and PCM1704	little nellie	Digital Source	0	7th May 2007 06:14 PM
non OS pcm1704	hugobors	Digital Source	12	1st March 2006 10:07 PM
Where to buy PCM1704?	m_buzzi	Digital Source	3	11th November 2004 01:53 PM
Pcm1704	hacknet	Digital Source	5	11th April 2004 10:25 PM
PCM1704 DAC for sale	Peter Daniel	Swap Meet	11	6th July 2003 06:23 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

1st July 2005, 04:08 PM	#2
A 8 diyAudio Member Join Date: Mar 2003 Location: Gothenburg	Well, it is printed on the chip ie nothing-U, J-J, K-K

1st July 2005, 04:32 PM	#3
momokowut diyAudio Member Join Date: Jul 2005 Location: HK	My CD player claims that it use PCM1704-K, but only have "PCM1704" marked on the chip. is it U grade?

1st July 2005, 05:27 PM	#4
A 8 diyAudio Member Join Date: Mar 2003 Location: Gothenburg	It would seem so. Perhaps people here know more about you particular player if you tell us which one it is.

1st July 2005, 11:59 PM	#6
momokowut diyAudio Member Join Date: Jul 2005 Location: HK	My CD player is Cxxy CD303/200 and no white dot on the chip. so, it should be U grade, right?

9th March 2007, 11:28 PM	#8
Ruach diyAudio Member Join Date: May 2003 Location: Singapore	I wrote to Texas Instrument regarding the dot markings. Here is their reply to my query: "In response to your query on PCM1704 kindly note that due to marking machine issue, we are marking grade rank by white dot on package. J-grade is one white dot K-grade is two white dot. Hence two white dot pcm1704 parts are from TI and is really K-grade PCM1704."

5th November 2010, 06:30 PM	#9
crt diyAudio Member Join Date: Apr 2007	How about this CHIPS http://cgi.ebay.com/DAC-IC-PCM1704-/...item19a9f54b3d They have 3 dots

5th November 2010, 08:30 PM	#10
SoNic_real_one diyAudio Member Join Date: Jan 2008 Location: Virginia	On eBay you can find anything

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