Home-brewing an ignition advance control

[Bill the arcstarter]

Andy Macf wrote:
>I was looking at similar 12 channel (they give  11 data channels + self
>test reference voltage) AD convertors recently from Texas Instruments 
>the
>12 bit ones seem to operate at half the speed of the 8 bit ones.  The 
10
>bit TLC1540 looks interesting.
>Andy Macf

I'm not familiar with that part.  Do you have a url for it?  Are they a 
serial interface?

The LTC1294 (there's a whole series of converters in that family) 
conversion rate is strictly controlled by the host processor.  The same 
clocked serial pulses used to configure and interrogate the chip 
actually sequence the approximation circuits inside.

-Bill

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