I need to read the pressure from a transducer that puts out 4-20 mA. I
was planning on putting an ADC across a precision 250 Ohm resistor to
read the voltages from 1v to 5v. I need at least 16 bits of
resolution. I have been searching data pages for a good 16bit ADC but
most ratiometric ones are limited to 2.5v. I use an AD7730 24 bit for
some projects but it is limited to 80 mv I believe. Do I need to use
a Voltage divider to get the voltages low enough or are there any 16
bit ADC that can handle the 1-5V? I dont need very fast output, say
less than 20 Hz.
was planning on putting an ADC across a precision 250 Ohm resistor to
read the voltages from 1v to 5v. I need at least 16 bits of
resolution. I have been searching data pages for a good 16bit ADC but
most ratiometric ones are limited to 2.5v. I use an AD7730 24 bit for
some projects but it is limited to 80 mv I believe. Do I need to use
a Voltage divider to get the voltages low enough or are there any 16
bit ADC that can handle the 1-5V? I dont need very fast output, say
less than 20 Hz.