Multiplexing analog inputs

Hi All,

I have an idea for a widget that will output multiple (maybe 8 or so to start with, but ultimately I'd like to have 32 or 64) analog signals. Each signal will need to be resolved into about 10 steps. Can anyone point me in the right direction for something that I can use to multiplex the analog signals (i.e., parallel to serial) so that I can then process the serial signal in my netduino. Is there a chip that can multiplex anolog signals?

Thanks.

John.

while multiplexing analog singlas is possible, id suggest just using one (or more) external adc ic's.

iam using a mcp3201 (single channel) but there are also ones with more channs. like mcp3208.

maybe even 16, idk. they are 12 bit and spi, also quite cheap. 16 bit and up get really expensive.

while multiplexing analog singlas is possible, id suggest just using one (or more) external adc ic's.

 

iam using a mcp3201 (single channel) but there are also ones with more channs. like mcp3208.

maybe even 16, idk. they are 12 bit and spi, also quite cheap. 16 bit and up get really expensive.

You're right, using an external ADC is probably a much better idea. I'll investigate that chip, thanks. I already can see this project is going to take much more time than I originally thought

John.