[sdiy] "new ic" website

[Barry Klein]

It may be more prudent to select parts for matched characteristics than
using a part with better specs (especially in our volumes).  I didn't really
look into the specs on these particular parts - I just included them as an
example to catch your attention like it did mine.  If I was to go to the
trouble of finding matched pairs with good characteristics, starting with
10% tolerance is better than something bigger.

Barry


-----Original Message-----
From: Tim Parkhurst [mailto:tparkhurst at siliconbandwidth.com] 
Sent: Tuesday, October 19, 2004 9:35 AM
To: Barry Klein; synth-diy at dropmix.xs4all.nl
Subject: RE: [sdiy] "new ic" website

> -----Original Message-----
> From: Barry Klein [mailto:Barry.L.Klein at wdc.com]
> Sent: Tuesday, October 19, 2004 8:50 AM
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] "new ic" website
> 
> Rather cool site that notifies you of new IC's that come out.
> http://www.digchip.com
> 
Sounds like a great site. Thanks, Barry.

> 
> such as
> Matched transistor pairs:
> BCM847BS : NPN matched double transistor; delta h_FE = 10 %...
> BCM857BS : PNP matched double transistor; delta h_FE = 10 %...
> 
RE: matched transistor pairs. Don't they need to be matched better than that
for use in expo converters, etc?


> (I guess they need a "obsoleted IC" website too...)
> 
I get all my obsolete IC listings from SDIY! I think 'obsolete' is Latin for
"worth $10 each on ebay"  ;)

> Barry
> 
> 
> 

Tim (I'm obsolete too... let the bidding begin!) Servo

"Imagination is more important than knowledge." - Albert Einstein
 

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