[sdiy] New VCF schematics

[Osamu (Sam) HOSHUYAMA]

Hello Takuya,

"KATAYAMA, Takuya" wrote:
> 
> Hello Osamu and List!
> 
> I saw Osamu's site and find "New structure" will work with some old
> linear ICs instead of M5222.
> 
> I'll try with TA7047 and these IF amp ICs.

One good thing with the structures is that OTAs only with a noninverting 
input can be used.  However, current output is essential for the HPF and
APF.

I couldn't get any information about TA7047 on the net.
I hope it works with TA7047.

I know that M5222 is very rare but the structures are applicable to
popular SSM2164.  That's why I put the schematic.

FYI: Datasheet of M5241 in Japanese (Very similar to M5222.  M5222 is a 
low power version.  I'm sure M5241 can be used for the structures.  
>From the schematics in the datasheet you can guess how close the
function 
and the internal circuit are to those of SSM2146.)  328kb.

  
http://www.semicon.melco.co.jp/semicon/pdf/004/001/002/007/04504932.PDF

Best regards,
-- - ---  - -- ------ - -------- -- - ---- -
Osamu (Sam) HOSHUYAMA      houshu at rogers.com
                              Ottawa, CANADA
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