X9110 Xicor, X9110 Datasheet - Page 18

• Manufacturer Part Number: X9110
• Description: Single Digitally-Controlled (XDCP) Potentiometer
• Manufacturer: Xicor

X9110 – Preliminary Information
Application Circuits (Continued)
REV 1.1.4 11/13/00
V
V
S
S
R
Inverting Amplifier
Function Generator
1
R
R
V
-1/2 ≤ G ≤ +1/2
V
G = - R
frequency ∝ R
amplitude ∝ R
1
3
O
O
Attenuator
= G V
= G V
R
R
2
4
2
/R
S
S
1
R
–
+
1
–
+
A
1
= R
, R
, R
–
+
R
2
B
2
2
, C
= R
3
}
}
= R
R
R
A
B
4
= 10kΩ
V
O
V
O
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R
2
R
1
Z
Equivalent L-R Circuit
V
V
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/(2πRC)
Filter
C
O
3
2
) >> R
= 1 + R
(R
R
R
1
3
1
+ R
2
R
2
3
1
/R
R
+
–
) C
2
1
1
+
–
= R
2
R
+ s Leq
2
V
O
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