X9250 Xicor, X9250 Datasheet - Page 17
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X9250
Manufacturer Part Number
X9250
Description
Quad Digitally Controlled Potentiometers (XDCP)
Manufacturer
Xicor
Datasheet
1.X9250.pdf
(21 pages)
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X9250
Application Circuits (continued)
REV 1.1.5 1/31/03
V
V
S
S
R
Inverting Amplifier
1
R
R
V
-1/2
V
G = - R
1
3
O
O
Attenuator
frequency
amplitude
= G V
= G V
R
R
2
G
4
2
/R
S
S
+1/2
1
R
1
–
+
= R
R
–
+
R
–
+
A
1
R
, R
, R
2
2
= R
2
B
, C
3
= R
}
}
4
R
R
= 10k
A
B
V
O
V
O
www.xicor.com
R
2
R
Equivalent L-R Circuit
Z
V
V
1
IN
S
S
Z
IN
= R
C
(R
1
2
C
1
+ s R
R
+ R
Characteristics subject to change without notice.
–
+
G
fc = 1/(2 RC)
Filter
O
3
2
) >> R
= 1 + R
(R
C
R
R
1
3
1
+ R
2
R
2
3
R
1
/R
+
–
) C
2
1
1
+
–
= R
2
R
+ s Leq
2
V
O
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