Re: AD561JN DAC compatibility

From: John Robertson <pinball_at_telus.net>
Date: Tue Oct 30 2012 - 11:24:06 EDT

Andrew Welburn wrote:
> Yes, however i have found thet the plastic versions can be a little
> 'noisier' ie, adding spikes to vectors. This might have just been the
> particular one or two that i have seen, but i've had to replace
> plastic ones with cermaic to fix problems before.
>
> Andrew Welburn
> http://www.andys-arcade.com

Could that have been poorer noise rejection requiring some extra HF
bypass caps on the Vcc lines right at the device? As a side note, I
recall IC sockets that had pre-soldered in caps across the power pins
(7-14 or 7-16) back in the day...

John :-#)#
>
> On 30/10/2012 05:47, Ian Eure wrote:
>> Has anyone used an AD561JN in a vector board successfully? I poked
>> around the datasheet, and it looks like the only difference is that
>> JN uses a plastic housing instead of the ceramic used by the JD
>> chips. They're rated the same in every other regard, so I assume they
>> will work the same, but I thought I'd ask to see if anyone has done it.

-- 
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
                 www.flippers.com 
"Old pinballers never die, they just flip out"
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Received on Tue Oct 30 11:24:27 2012

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