X9118 Datasheet, PDF(16/20 Page) Intersil Corporation – Dual Suply/Low Power/1024-Tap/2-Wire Bus

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X9118 Datasheet, PDF (16/20 Pages) Intersil Corporation – Dual Suply/Low Power/1024-Tap/2-Wire Bus

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X9118

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

100kâ¦

10kâ¦

TL072

10kâ¦

10Îºâ¦

+12V

-12V

Two terminal Variable

Resistor;

Variable current

Voltage Regulator

VIN

317

Iadj

VO (REG) = 1.25V

(1+R2/R1)+Iadj R2

VO (REG)

Comparator with Hysterisis

R1 R2

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

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

FN8161.1

March 25, 2005

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