[sdiy] Aries Multimode filter

[Robert Leiner]

If any has any datasheet of BB3500? please steep forward ; )
Will look around.

Have just been watching an nice documentary on Swedish television about
American composer Bruce Haack, interesting person indeed!

/Robert Leiner

> a) BB3500 was an Electronotes favorite around 1975-77. TL072ACP will
> substitute 
> nicely.
> 
> b) 7435 = 1974, 35th week of the year.
> 
> Paul S.
> 
> ----- Original Message -----
> From: "Robert Leiner" <robert at leinermedia.com>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Wednesday, February 23, 2005 5:04 PM
> Subject: Re: [sdiy] Aries Multimode filter
> 
> 
>> The first digit can be a bit hard to read and options could be 8B or BB as
>> Mike suggested "The BB3500 is nothing but an old Burr-Brown 3500 high
>> slew-rate op amp that CFR liked to use. Haven't seen any in many years, but
>> there are others that could sub for this one if need be."
>> 
>> What could an replacement for "BB3500 Burr-Brown 3500 high slew-rate op amp"
>> be?
>> 
>> Ken Stone suggested that 7435 is almost certainly the year of manufacture
>> for the chip. The rest is probably an in-house code.
>> 
>> Keeping this on the list so others can participate! and for the record.
>> 
>> /Robert Leiner
>> 
>> 
>>> 
>>>> I also need to now what this IC is - "3B 3500 7435" can be an buffer but
>>>> are
>>>> not quite sure?
>>> 
>>> 
>>> 7435 is almost certainly the year of manufacture for the chip. The rest is
>>> probably an in-house code.
>>> 
>>> Ken
>>> _______________________________________________________________________
>>> Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
>>> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
>>> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>>