On Mon, Feb 13, 2017 at 5:20 AM, Rob van der Putten <r...@sput.nl> wrote:
> Hi there > > > On 13/02/17 13:01, evilwulfie wrote: > > I use a single rail opamp to level convert and protect the analog input. >> > > It's probably easier to use an SPI ADC (EG: MCP3201) running on 5V and > then do the level translation in the digital signal. > > > Regards, > Rob > > Probably not. With the onchip ADC, all the software( drivers etc ) are already written for you. Using an external SPI ADC you have to deal with additional costs, additional circuitry, and additional software, which is on you to create. Not only that, you will probably still have to level convert, in order to make sure the input on the ADC does not swing too high. You also need to isolate the pin. I'd say an I2C ADC would be a better choice, and it would be except. You would have to deal with everything i mentioned about an SPI ADC. Except writing the "driver" software would be much easier to deal with. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORri5W7UX37fmQTQGJJPpmQ4e_uDZbtGbPFy8%3DUNE33u7Q%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
