X9269_07 Datasheet, PDF(21/24 Page) Intersil Corporation – Dual Digitally-Controlled Potentiometers

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X9269_07 Datasheet, PDF (21/24 Pages) Intersil Corporation – Dual Digitally-Controlled Potentiometers

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X9269

APPLICATIONS INFORMATION

Basic Configurations of Electronic Potentiometers

+VR

Three terminal Potentiometer;

Variable voltage divider

Application Circuits

Noninverting Amplifier

VO = (1+R2/R1)VS

Offset Voltage Adjustment

100kÎ©

10kÎ©

TL072

10kÎ©

+12V

-12V

10kÎ©

VCC

Two terminal Variable Resistor;

Variable current

Voltage Regulator

VIN

317

VO (REG)

Iadj

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

Comparator with Hysterisis

R1 R2

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

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

FN8173.4

April 17, 2007

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