SBOA103C
Jan 2006
PGA309 Quick Start
System Reference Guide
91
Iout
Iin Iref
+
(
)
100
⋅
Iout
Vin
R1
Vref
R2
+
100
⋅
Iout
100
R1
Vin
⋅
100
R2
Vref
⋅
+
Iout
ExtraGain
(
) Vin
⋅
ExtraOffset
(
) 2.5
⋅
+
The spreadsheet can also be used to calibrate a system using a PGA309 with a 4mA to 20mA output
scaling.
PGA309 With Output Scaling
(4mA to 20mA)