In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Zoot wrote:

Update: Peter, that document of yours is the niftiest thing since sliced bread. While the component count ends up being a bit higher than the analogin circuit in the SX/B docs, using the 3 resistors and 2 caps and properly biasing the input yields incredible results -- rock-steady values across the entire range of the chosen bit resolution. In my test last night, a photoresistor that yields an input voltage of about 2.8v-5v resulted in 8-bit values of 3-247. Nice. Thank you, thank you!

While I still sometimes (wistfully) wish that the SX had 1-5 analog channels like some of the PICs, this is a superb way to add one or two ADCs to a project without having to purchase an ADC chip. Sweet.

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