X9409_15 Datasheet, PDF(15/19 Page) Intersil Corporation – Low Noise/Low Power/2-Wire Bus Quad Digita Controlled Potentiometers

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X9409_15 Datasheet, PDF (15/19 Pages) Intersil Corporation – Low Noise/Low Power/2-Wire Bus Quad Digita Controlled Potentiometers

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X9409

Applications Information

Basic Configurations of Electronic Potentiometers

+VR

VW/RW

FIGURE 13. THREE TERMINAL POTENTIOMETER; VARIABLE

VOLTAGE DIVIDER

Application Circuits

VO = (1+R2/R1)VS

FIGURE 15. NONINVERTING AMPLIFIER

100kÎ©

10kÎ©

TL072

10kÎ©

FIGURE 17. OFFSET VOLTAGE ADJUSTMENT

FIGURE 14. TWO TERMINAL VARIABLE RESISTOR; VARIABLE

CURRENT

VIN

317

VO (REG)

Iadj

VO (REG) = 1.25V (1+R2/R1)+Iadj R2

FIGURE 16. VOLTAGE REGULATOR

VUL = {R1/(R1+R2)} VO(max)

VLL = {R1/(R1+R2)} VO(min)

FIGURE 18. COMPARATOR WITH HYSTERESIS

Submit Document Feedback 15

FN8192.6

September 3, 2015

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