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| X9258_14 Datasheet, PDF (16/19 Pages) Intersil Corporation – Quad Digital Controlled Potentiometers | |||
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X9258
Applications information
Basic Configurations of Electronic Potentiometers
VR
+VR
VW/RW
FIGURE 9. THREE TERMINAL POTENTIOMETER; VARIABLE
VOLTAGE DIVIDER
Application Circuits
VS
+
VO
â
R2
R1
VO = (1+ R2/R1) VS
FIGURE 11. NON-INVERTING AMPLIFIER
R1
R2
VS
100kΩ
â
VO
+
10kΩ
TL072
10kΩ
10kΩ
+12V
-12V
FIGURE 13. OFFSET VOLTAGE ADJUSTMENT
I
FIGURE 10. TWO-TERMINAL VARIABLE RESISTOR;
VARIABLE CURRENT
VIN
317
VO (REG)
R1
IADJ
R2
VO (REG) = 1.25V (1+ R2/R1)+ IADJ R2
FIGURE 12. VOLTAGE REGULATOR
VS
â
VO
+
R1 R2
VUL = {R1/(R1+R2)} VO(MAX)
VLL = {R1/(R1+R2)} VO(MIN)
FIGURE 14. COMPARATOR WITH HYSTERESIS
16
FN8168.6
December 15, 2011
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