[sdiy] Aries Multimode filter

[phillip m gallo]

The BB3500 is a single amp the TLO72 is a dual, so a high slew "single" op
is required, i.e. TLO71, LM351, LM318...

regards,
p

-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Paul Schreiber
Sent: Wednesday, February 23, 2005 3:15 PM
To: Robert Leiner; synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Aries Multimode filter


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/>
>

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