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Datasheet PM4007A
https://forum.lddb.com/viewtopic.php?f=24&t=7810		 Page 1 of 1
Author:  tridentsx [ 14 May 2018, 08:20 ]
Post subject:  Datasheet PM4007A
Does anyone have datasheet for the PM4007A used in all the demodulators?

:?:
Author:  admin [ 14 May 2018, 08:51 ]
Post subject:  Re: Datasheet PM4007A
tridentsx wrote:
Does anyone have datasheet for the PM4007A used in all the demodulators? :?:


That would denote a Pioneer chip and, if used internally, Pioneer was not famous for publishing specs and datasheets.

Same things for their DACs.

Julien
Author:  tridentsx [ 14 May 2018, 11:36 ]
Post subject:  Re: Datasheet PM4007A
There has to be someone that has the datasheet it was used in all kinds of small boutique companies AC3 RF demodulation equipment.

What is the cheapest possible available equipment where I could find one of these chips in ? There has to be some obsolete receiver or processor that came with one of these ?
Author:  signofzeta [ 14 May 2018, 16:45 ]
Post subject:  Re: Datasheet PM4007A
You don’t really need a full data sheet to implement it but I would assume that if you bought a bunch of chips from Pioneer BITD they would have come with some info on how to use them. AFAIK there is one demod chip that is the same in every RF demodulator, receiver, surround processor, etc. You just need to feed it the right thing and it will put out the right thing.

The most expensive way to get one seems to be the more basic standalone demods, especially the ones with pass through. The cheapest is probably a mediocre Yamaha receiver or something like the ADP303 from Harmon Karden since the HDMI generation has no clue what to do with it. Those can be modified to have a standard TOSLINK out although I’ve ever done it.
Author:  ldfan [ 14 May 2018, 18:14 ]
Post subject:  Re: Datasheet PM4007A
Not sure if this will help...

This is a partial pic of the Sample Rate Systems AC3-RF Demodulator schematic showing the pin out of the PM-4007A.

Image

Regards,

Dave
Author:  tridentsx [ 15 May 2018, 05:10 ]
Post subject:  Re: Datasheet PM4007A
No it doesn't help because the picture is missing, I bought a Marantz 870 something with AC3RF capability for $9 now i will try and breadboard the circuit from Pioneer service manual. Probably make a proper PCB as well in due time.
Author:  ldfan [ 15 May 2018, 05:39 ]
Post subject:  Re: Datasheet PM4007A
Here are more images of the Sample Rate Systems, AC3-RF Demodulator board.....

Full Schematics (hope it's sharp enough to read, if not please let me know)
Image

Board Layout
Image

The actual board inside my Pioneer, CLD-D701
Image
Author:  admin [ 15 May 2018, 07:07 ]
Post subject:  Re: Datasheet PM4007A
ldfan wrote:
Not sure if this will help...

This is a partial pic of the Sample Rate Systems AC3-RF Demodulator schematic showing the pin out of the PM-4007A.


This is probably the actual pin-out (from the service manual):

Attachment:
PM4007A.gif
PM4007A.gif [ 24.48 KiB | Viewed 6383 times ]


Julien
Author:  ldfan [ 15 May 2018, 07:20 ]
Post subject:  Re: Datasheet PM4007A
Amazing how complicated it really is to convert AC3-RF to S/PDIF.

Didn’t really think about what all the legs of the PM-4007A were used for. :crazy:
Author:  cplusplus [ 02 Mar 2020, 16:51 ]
Post subject:  Re: Datasheet PM4007A
This is from the Harman Kardon AVR-75/85 SM:

Attachments:
PM4007A.png
PM4007A.png [ 83.92 KiB | Viewed 5214 times ]
Author:  admin [ 18 Oct 2022, 07:39 ]
Post subject:  Re: Datasheet PM4007A
Someone posted a PM4007A for sale (old new stock) and we might as well keep the good quality pictures for reference here.

Attachment:
PM4007A-a.jpg
PM4007A-a.jpg [ 186.89 KiB | Viewed 3056 times ]

Attachment:
PM4007A-b.jpg
PM4007A-b.jpg [ 194.02 KiB | Viewed 3056 times ]


Julien
Author:  ldfan [ 18 Oct 2022, 08:33 ]
Post subject:  Re: Datasheet PM4007A
Did they want like $50 or more for it? :roll:
Author:  admin [ 20 Oct 2022, 16:16 ]
Post subject:  Re: Datasheet PM4007A
ldfan wrote:
Did they want like $50 or more for it? :roll:


US$26.50 shipped (within Japan).

Julien
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