Hello again,
Thanks for pointing out the chip, it could be quite useful, I will 
consider it when (if) I start thinking about making resolver modules, 
however, I don't like the $13/100 price.. It is very typical of the modern 
implementations of converting a resolver to digital counts (which I 
personally don't much care for), afterall a resolver was intended as an 
analog position sensor, now days we have things like hall, CCD, and capacitive 
sensors, other than a few specific cases, there is not too much point in 
using a resolver unless it is a refit of existing equipment IMHO. ;)

-Neil Whelchel-
C-Cubed
760 366-0126
- I don't do Window$, that's what the janitor is for -

When the going gets tough, the tough go shopping.

On Mon, 31 Mar 2008, Jon Elson wrote:

> Neil Whelchel wrote:
>> Hello,
>> What you are talking about here is a rotary transformer (resolver). I have
>> not put
> Analog Devices makes the AD2S1200, a complete, single-chip
> resolver to digital converter.  It costs ~ $20 in single
> quantity.  it has the reference oscillator, sense amps and all
> the deciphering circuits.  It can produce a binary digital
> position value or quadrature outputs to simulate an encoder.
> The only thing you need to add is a simple output driver.
> It produces 1024 quadraure counts/cycle of the resolver.
>
> Jon
>
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