Hi, to all.
Like subject describe I need some opinions and possibly some device proposal for ADC which should use I2C and have more than 2 channels for temperature measuring.
It would be nice if it support more than 4 channels and use temprature sensors (rtd and thermo couple together is ideal solution).
My plan is to use 2 wire RTD's, right now there is no need for temp. compensation so 3 or 4 wire will not be used, at least for now.
Resolution should be 12-16 bit, it can be more, but it is not mandatory (12 bits is enough).
About power, it would be nice if it can work with 5V, not 3.3V, and if Vref can be already integrated that would be perfect solution.
Main goal is to achieve number of pins for communication with micro conetroller as low as possible, so my decision is to use i2c. If there is better way to achive my goal please let me know.
I found almost ideal solution (ADS1247/8, but is uses SPI communication, and by design use many microcontroller pins, which I want to minize.
If you need any additional information please let me know.
Thanks in advance.
Regards,
Almir