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X9259 Datasheet, PDF (18/21 Pages) Xicor Inc. – Quad Digitally-Controlled (XDCP) Potentiometers
X9259
Applications Information
Basic Configurations of Electronic Potentiometers
VR
+VR
RW
Three terminal
Potentiometer;
Variable voltage divider
Application Circuits
Noninverting Amplifier
VS
+
–
VO
R2
R1
VO = (1+R2/R1)VS
Offset Voltage Adjustment
R1
R2
VS
100kΩ
–
+
VO
10kΩ
TL072
10kΩ
10kΩ
+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
–
VO
+
R1 R2
VUL = {R1/(R1+R2)} VO(max)
RLL = {R1/(R1+R2)} VO(min)
18
FN8169.2
September 16, 2005