X9110_08 Datasheet, PDF(17/18 Page) Intersil Corporation – Dual Supply/Low Power/1024-Tap/SPI Bus

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X9110_08 Datasheet, PDF (17/18 Pages) Intersil Corporation – Dual Supply/Low Power/1024-Tap/SPI Bus

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Application Circuits (continued)

ATTENUATOR

R1 = R2 = R3 = R4 = 10kÎ©

VO = G VS

-1/2 â¤ G â¤ +1/2

INVERTING AMPLIFIER

VO = G VS

G = - R2/R1

X9110

FILTER

GO = 1 + R2/R1

fc = 1/(2ÏRC)

EQUIVALENT L-R CIRCUIT

ZIN

FUNCTION GENERATOR

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

(R1 + R3) >> R2

} RA

} RB

frequency â R1, R2, C

amplitude â RA, RB

FN8158.3

February 13, 2008

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