Part Number: PGA900
As per the TI document " PGA900 as a 4- to 20-mA Current Loop Transmitter " DAC code for 4mA is 2096 (DEC) and for 20 mA it is 10476 (DEC). Hence the total span in DAC code is 8380. But in my circuit DAC code span for 4 - 20 mA is only 8330. Details of characterization of my circuit as follows. Current measured using Keithley 2000 multimeter.
DAC code (HEX) DAC code (DEC) 4-20 mA loop current
818 2072 4.0036
a24 2596 5.008
c29 3113 6.004
e30 3632 7.0009
1033 4147 8.0009
144c 5196 10.005
28a2 10402 20.000
