X9C103S Datasheet, PDF(8/10 Page) Intersil Corporation – Wiper Position Stored in Non-volatile Memory and Recalled on Power-up

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X9C103S Datasheet, PDF (8/10 Pages) Intersil Corporation – Wiper Position Stored in Non-volatile Memory and Recalled on Power-up

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X9C102, X9C103, X9C104, X9C503

Basic Configurations of Electronic Potentiometers

VH/RH

VW/RW

VL/RL

THREE TERMINAL POTENTIOMETER;

VARIABLE VOLTAGE DIVIDER

Basic Circuits

TWO TERMINAL VARIABLE RESISTOR;

VARIABLE CURRENT

VREF

+5V

OP-07

VOUT

-5V

VOUT = VW/RW

VW/RW

(a)

(b)

+5V

LM308A

-5V

VO = (1+R2/R1)VS

BUFFERED REFERENCE VOLTAGE

CASCADING TECHNIQUES

NONINVERTING AMPLIFIER

VIN

317

Iadj

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

VO (REG)

100kÎ©

10kÎ©

TL072

10kÎ©

+12V

-12V

VOLTAGE REGULATOR

OFFSET VOLTAGE ADJUSTMENT

LT311A

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

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

(FOR ADDITIONAL CIRCUITS SEE AN1145)

COMPARATOR WITH HYSTERESIS

FN8222.3

July 20, 2009

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