X9259_14 Datasheet, PDF(18/21 Page) Intersil Corporation – Single Supply/Low Power/256-Tap/2-Wire Bus Quad Digitally-Controlled Potentiometers

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X9259_14 Datasheet, PDF (18/21 Pages) Intersil Corporation – Single Supply/Low Power/256-Tap/2-Wire Bus Quad Digitally-Controlled Potentiometers

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Application Circuits (continued)

Attenuator

R1 = R2 = R3 = R4 = 10kÎ©

VO = G VS

-1/2 ï£ G ï£ +1/2

X9259

Filter

GO = 1 + R2/R1

fc = 1/(2ï°RC)

Inverting Amplifier

R1 R2

VO = G VS

G = - R2/R1

Function Generator

} RA

} RB

frequency ïµ R1, R2, C

amplitude ïµ RA, RB

Equivalent L-R Circuit

ZIN

ZIN = R2 + s R2 (R1 + R3) C1 = R2 + s Leq

(R1 + R3) >> R2

Submit Document Feedback 18

FN8169.6

December 12, 2014

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