x9250us24izt1 Intersil Corporation, x9250us24izt1 Datasheet - Page 18

• Manufacturer Part Number: x9250us24izt1
• Description: Quad Digitally Controlled Potentiometer Xdcp?
• Manufacturer: Intersil Corporation

Application Circuits (continued)
V
V
S
S
R
Inverting Amplifier
1
R
R
V
-1/2 ≤ G ≤ +1/2
V
G = - R
1
3
O
O
Attenuator
frequency ∝ R
amplitude ∝ R
= G V
= G V
R
R
2
4
2
/R
18
S
S
1
R
1
–
+
= R
–
+
–
+
A
1
R
, R
, R
2
2
= R
2
B
, C
3
= R
}
}
4
R
R
= 10kΩ
A
B
V
O
V
O
R
X9250
2
R
Z
Equivalent L-R Circuit
V
V
1
IN
S
S
Z
IN
= R
C
(R
1
2
C
1
R
+ s R
+ R
–
+
G
fc = 1/(2πRC)
Filter
O
3
2
) >> R
= 1 + R
C
R
R
(R
1
3
1
+ R
2
R
2
1
R
3
/R
+
–
) C
2
1
1
+
–
= R
2
R
+ s Leq
2
V
O
August 29, 2006
FN8165.3