LT1251 Linear Technology, LT1251 Datasheet - Page 19

• Manufacturer Part Number: LT1251
• Description: 40MHz Video Fader and DC Gain Controlled Amplifier
• Manufacturer: Linear Technology

TYPICAL APPLICATIONS
V
IN
1k
Center Frequency vs Control Voltage V
350
300
250
200
150
100
50
0
0
500
V
FS
= 2.5V
0.5
–
+
LT1252
1k
1.0
V (V)
1.5
U
State Variable Filter with Adjustable Frequency and Q
1.5k
1.5k
1k
1k
1.5k
HP
8
OUT
2.0
1251/56 TA15b
1.5k
V
V
14
13
FS
FS
2
1
12
2.5
R
V
LT1256
V
–
+
+
–
FS
C
3
10
1
2
500pF
R
R
LT1256
500pF
C
C
5
5
1
2
R
V
V
FS
–
+
+
–
C
Q
10
3
2
1
14
13
V
V
FS
FS
12
1k
8
1.5k
BP
6
5
4
3
2
1
0
1k
0
OUT
1.5k
0.5
Q vs Control Voltage V
1.5k
1k
14
13
2
1
V
V
–
+
1.0
+
–
C
3
1
2
V
500pF
Q
R
LT1256
C
500pF
(V)
5
V
FS
1.5
R
= 2.5V
FS
10
V
LT1251/LT1256
V
V
FS
FS
FS
2.0
12
= 2.5V
1251/56 TA15c
Q
1251/56 TA15a
8
2.5
LP
OUT
19