[sdiy] digital control of CV

Tom Wiltshire tom at electricdruid.net
Mon Sep 3 14:57:01 CEST 2007

On 3 Sep 2007, at 12:21, Samppa Tolvanen wrote:

> On 9/3/07, Tom Wiltshire <tom at electricdruid.net> wrote:
>> Jure,
>>> tom - wouldn't that be much more expensive?
>> Using Octal DACs rather than a single DAC and sample & hold buffers
>> _might_ be more expensive, but not hugely. Farnell Online stock the
>> AD5346 for £3.70 in the UK. This deals with eight channels.
> Huh - Tom are You trying to redefine "Art of Soldering" here? 38 ld
> TSSOP sounds like microscopic work.

Well, a magnifying glass certainly helps, and good light too, but it  
isn't absolutely impossible. I've done a few TSSOP package DACs now,  
and they all worked first time.

Doing 8 x 32 TSSOP pins is obviously going to be a pain in the neck,  
but I'll manage when the time comes, I'm sure. It'll take a few deep  
breaths and plenty of good hot tea.

Anyway, if you don't like the package (not without reason) then I'm  
sure there are other octal DACs out there in a more friendly format,  
although they might be serial rather than parallel interface.


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