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| X9119_14 Datasheet, PDF (15/17 Pages) Intersil Corporation – Single Digitally-Controlled 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
+
VO
â
R2
R1
VO = (1+R2/R1)VS
OFFSET VOLTAGE ADJUSTMENT
R1
R2
VS
100kΩ
â
+
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 HYSTERESIS
VS
â
VO
+
R1 R2
VUL = {R1/(R1+R2)} VO(max)
RLL = {R1/(R1+R2)} VO(min)
15
FN8162.4
July 9, 2008
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