Hi, I just acquired my arduino and am starting out with my project (no prior electronics experience, some programming but never interfacing with hardware).
I did some research and found that the arduino AD isn’t fast enough for me. I need at least 200 kHz sampling rate to acquire data from my 3 piezoelectric sensors (sensing vibrations though wood).
I went to the texas instrument site and selected the analog - digital search thing. It’s actually really nice: http://focus.ti.com/paramsearch/docs/parametricsearch.tsp?family=analog&familyId=2019&uiTemplateId=NODE_STRY_PGE_T .
Im wondering how I would connect the AD to my arduino and what kind of interface it should have. The options are parallel, serial, SPI, and many more. Also I’m confused on the multi-channel AD’s.
Just taking one I found (assuming my serial connection guess was correct), http://www.ti.com/product/ads7230. I looked at the circuit-like diagram and got confused… So there are two analog inputs, IN0 and IN1. Where does the output come out? is that the SDO pin? How do I get data from both analog inputs from one pin :~. If someone can explain or point me to an explanation of the other pins in the lower right hand corner I would be immensely grateful too
Sorry about the barrage of questions