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| X9119 Datasheet, PDF (16/18 Pages) Xilinx, Inc – Single Digitally-Controlled (XDCP ™ ) Potentiometer | |||
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X9119
APPLICATIONS INFORMATION
Basic Configurations of Electronic Potentiometers
VR
+VR
RW
Three terminal Potentiometer;
Variable voltage divider
Application Circuits
Noninverting Amplifier
VS
+
â
VO
R2
R1
VO = (1+R2/R1)VS
Offset Voltage Adjustment
R1
R2
VS
100kâ¦
â
+
VO
10kâ¦
TL072
10kâ¦
10kâ¦
+12V
-12V
I
Two terminal Variable Resistor;
Variable current
Voltage Regulator
VIN
317
VO (REG)
R1
Iadj
R2
VO (REG) = 1.25V (1+R2/R1)+Iadj R2
Comparator with Hysterisis
VS
â
+
VO
R1 R2
VUL = {R1/(R1+R2)} VO(max)
RLL = {R1/(R1+R2)} VO(min)
16
FN8162.2
September 15, 2005
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