[sdiy-interim] CMOS 4001A source?

[Grant Richter]

As I recall, the A series was unbuffered and had lower gain and a  
much softer transfer function.

The B series is buffered and has much higher gain and a snappier  
transfer function. I think they also improved the static protection.

Then there were some problem applications (linear applications?) that  
needed the unbuffered version, so they made a U version for  
"unbuffered". But that will depend on the manufacturers part number  
system. Only the datasheet knows for sure, and don't believe  
everything you read in datasheets either. I have some times seen  
application circuits in datasheets that just won't work.

I highly recommend the "CMOS Cookbook" to anybody using CMOS.

On Mar 26, 2007, at 7:05 AM, John Loffink wrote:

> Thanks.  So it is just a part number change apparently, from 4001A to
> 4001UB.  Are there any differences between those part numbers?
>
> John Loffink
> The Microtonal Synthesis Web Site
> http://www.microtonal-synthesis.com
> The Wavemakers Synthesizer Web Site
> http://www.wavemakers-synth.com
>
>
>> -----Original Message-----
>> From: synth-diy-bounces at aym.net2.nerim.net [mailto:synth-diy-
>> bounces at aym.net2.nerim.net] On Behalf Of Oakley Sound
>> Sent: Monday, March 26, 2007 2:18 AM
>> To: synth-diy at vermine.org
>> Subject: Re: [sdiy-interim] CMOS 4001A source?
>>
>> Are these not still available as 4001UB devices?
>>
>> I have used UB devices in places where the original A types were
>> specified.
>>
>> Tony
>>
>> www.oakleysound.com
>>
>
>
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