[sdiy] CA3280

[JAMES GALLANT]

Thanks to all for the input, I think Ill have to get some of these.

The reason I brought the topic up is that I've found some at Rochester 
Electronics Inc.
http://www.rocelec.com/
They have over 16,000 in stock spread between three part numbers, all of 
which are by Harris.

I contacted them yesterday, just before my first post on this topic, and 
they will sell to individuals.  Their terms are $50 minimum order per line 
item.  In other words, per unique part number ordered, not total order.  
They also take major credit cards for payment.  The down side of this is 
that they do not list prices, you have to submit an RFQ, request for quote.  
I have not done this yet but I will when I get back to work next Tuesday.  
I'll post my results if anybody is interested.  I'll be asking about 
quanties starting at 25 and going up to 250.  Granted, I'll never need 250 
but I curious as to where the price breaks (if any) may be.

Also, for those intrested, REI has several thousand CA3080's in stock 
(Harris & Intersil) and are now producing new ones.  The company I work for 
is purchasing a few of hundred per month from them for use in our products.

I know that Futurelec has both the CA3080 and CA3280 listed as available but 
I read somewhere that they had run out of the CA3280.

Happy soldering,

James





>From: Ian Fritz <ijfritz at comcast.net>
>To: "Christian From" <christian.from at gmail.com>,        "Paul Perry" 
><pfperry at melbpc.org.au>
>CC: synth-diy at dropmix.xs4all.nl
>Subject: Re: [sdiy] CA3280
>Date: Fri, 25 May 2007 12:17:53 -0600
>
>At 10:37 AM 5/25/2007, Christian From wrote:
>>So why is it better than 13700? That one has linearizing diodes as 
>>well...?
>
>It has a better linearization scheme. It also has lower noise, due to the 
>design of the input transistors.  In practice, it also has much lower 
>variation of offset with control current.
>
>   Ian
>
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