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X9269 Datasheet, PDF (21/25 Pages) Xicor Inc. – Dual Digitally-Controlled Potentiometers | |||
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X9269
Application Circuits (continued)
Attenuator
R1
R2
â
VS
+
VO
R3
R4 R1 = R2 = R3 = R4 = 10kâ¦
VO = G VS
-1/2 ⤠G ⤠+1/2
Filter
C
VS
+
â
VO
R
R2
R1
GO = 1 + R2/R1
fc = 1/(2ÏRC)
Inverting Amplifier
R1 R2
VS
â
+
VO
VO = G VS
G = - R2/R1
Equivalent L-R Circuit
C1
VS
ZIN
R2
+
â
R1
R3
ZIN = R2 + s R2 (R1 + R3) C1 = R2 + s Leq
(R1 + R3) >> R2
Function Generator
C
â
R2
R1
â
+
} RA
+
} RB
frequency â R1, R2, C
amplitude â RA, RB
REV 1.1.11 2/17/03
www.xicor.com
Characteristics subject to change without notice. 21 of 25
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