
//INTEGRAS/ELS/PAGINATION/ELSEVIER UK/PLC/3B2/FINALS-7-6-04/0750656794-CH034.3D – 346 – [344–369/26]
19.6.2004 9:23PM
Voltage conversion
FromFigure34.1,itcanbeseenthatanFX2N-4AD,whensuppliedwithamaximum
input voltage of þ10 V, will convert that v oltage to a maximum digital output of
þ2000.
Current conversion
When used for current conversion, the ADC unit has a 250 resistor connected between
the Iþ and the VI terminals and it is the potential difference across the 250 resistor
which is being converted.
Hence f or a maximum input current of þ20 mA, the actual voltage applied to the
ADC will be only 5 V, which will produce a factory setting default ...