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X9401_15 Datasheet, PDF (17/20 Pages) Intersil Corporation – Quad, 64 Tap, Digitally Controlled Potentiometer
◁
Application Circuits (continued)
INVERTING AMPLIFIER
R1
R2
VS
–
+
VO = G VS
G = - R2/R1
X9401
EQUIVALENT L-R CIRCUIT
C1
VS
R2
+
VO
–
R1
ZIN
R3
ZIN = R2 + S R2 (R1 + R3) C1 = R2 + S LEQ
(R1 + R3) >> R2
FUNCTION GENERATOR
C
–
R2
R1
–
+
} RA
+
} RB
FREQUENCY µ R1, R2, C
AMPLITUDE µ RA, RB
17
FN8190.5
September 14, 2015
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