[sdiy] CEM3340: VCC +10V vs +11V

Florian Anwander fanwander at mnet-online.de
Mon Jun 6 10:34:25 CEST 2016


What might be the reason to run the 3340 at a lower VCC?



Am 06.06.2016 um 00:50 schrieb Tom Wiltshire:
> It sounds from the comment posted earlier that the original spec might have been quite close to the limit of the technology, if you see what I mean.
>
> "After reviewing the prior specifications I did decide to change the minimum VCC spec. The old VCC min. was +10V and the new VCC min. is +11V. This is based on my own bench experience with several versions of the device. Many devices will work with a VCC of +10V and others won’t. Devices that won’t work at +10V should easily work at +11V or higher. This is the only specification that we’ve changed" John Borg (Onchip Engineer)
>
> Consequently, the "change" of spec for the "new" revision might simply be giving themselves a little bit more breathing space, and limiting applications that were always bound to throw up a lot of problems - e.g. OB8, A-111?
>
> Tom
>
>   
> On 5 Jun 2016, at 23:12, Doug Terrebonne <dougt55 at yahoo.com> wrote:
>
>> In the original A-111 module he was powering the chip at the limit of the spec.
>>
>> Doug
>> synthparts.com




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