X9260_06 INTERSIL [Intersil Corporation], X9260_06 Datasheet - Page 22

• Manufacturer Part Number: X9260_06
• Description: Dual Digitally-Controlled Potentiometers
• Manufacturer: INTERSIL [Intersil Corporation]

Application Circuits (continued)
V
V
S
S
R
FUNCTION GENERATOR
INVERTING AMPLIFIER
1
R
R
frequency ∝ R
amplitude ∝ R
V
-1/2 ≤ G ≤ +1/2
V
G = - R
1
3
O
O
ATTENUATOR
= G V
= G V
R
R
2
4
2
/R
S
S
22
1
R
–
+
A
1
1
–
+
, R
, R
= R
–
+
R
2
B
, C
2
2
= R
3
}
}
= R
R
R
A
B
4
= 10kΩ
V
O
V
O
R
2
X9260
R
1
Z
V
V
IN
S
S
Z
IN
EQUIVALENT L-R CIRCUIT
= R
C
(R
1
2
–
+
C
1
R
+ s R
+ R
G
fc = 1/(2πRC)
FILTER
C
O
3
2
) >> R
= 1 + R
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
FN8170.3