X9259 Datasheet, PDF(19/21 Page) Xicor Inc. – Quad Digitally-Controlled (XDCP) Potentiometers

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X9259 Datasheet, PDF (19/21 Pages) Xicor Inc. – Quad Digitally-Controlled (XDCP) Potentiometers

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Application Circuits (continued)

X9259

Attenuator

R4 R1 = R2 = R3 = R4 = 10kâ¦

VO = G VS

-1/2 â¤ G â¤ +1/2

Filter

GO = 1 + R2/R1

fc = 1/(2ÏRC)

Inverting Amplifier

R1 R2

VO = G VS

G = - R2/R1

Function Generator

} RA

} RB

frequency â R1, R2, C

amplitude â RA, RB

Equivalent L-R Circuit

ZIN

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

(R1 + R3) >> R2

FN8169.2

September 16, 2005

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