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| X9251_14 Datasheet, PDF (17/21 Pages) Intersil Corporation – Single Supply/Low Power/256-Tap/SPI Bus, Quad Digitally-Controlled Potentiometer | |||
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X9251
Applications information
Basic Configurations of Electronic Potentiometers
VR
+VR
RW
Three terminal Potentiometer;
Variable voltage divider
Application Circuits
NON INVERTING AMPLIFIER
VS
+
â
VO
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)
Submit Document Feedback 17
FN8166.6
December 3, 2014
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