LTC1068 Linear Technology, LTC1068 Datasheet - Page 24

• Manufacturer Part Number: LTC1068
• Description: Clock-Tunable/ Quad Second Order/ Filter Building Blocks
• Manufacturer: Linear Technology

LTC1068 Series
24
TYPICAL APPLICATIONS
5V
V
IN
R11 36.5k
Low Power Applicaions. Maximum f
Passband – 3dB at (0.8)(f
LTC1068-50 8th Order Linear Phase Bandpass, f
1 F
1.74k
R61
R43 12.1k
R33 26.7k
R31 30.1k
R41 10.7k
R21 10k
R23 10k
0.1 F
15.8K
4.99k
R51
R
L3
FilterCAD Custom Inputs for f
10
11
12
13
14
1
2
3
4
5
6
7
8
9
2nd ORDER SECTION
CENTER
INV A
INV B
HPB/NB
BPB
LPB
SB
NC
AGND
NC
SA
LPA
BPA
HPA/NA
V
+
LTC1068-50
R
R
H1
H3
U
) and (1.2)(f
18.2k
CENTER
B
C
A
D
47.5k
HPD/ND
HPC/NC
INV C
INV D
BPD
BPC
CLK
LPD
LPC
SC
V
NC
NC
SD
–
= 25kHz with a Single 5V Supply
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CENTER
11.6756
10.8117
f
8.7384
9.6415
O
(kHz)
CENTER
C
) for Single Supply
R44 22.1k
R24 10k
R34 28k
= 10kHz
R22 11.3k
R32 29.4k
R
R
R42 10k
H2
L2
= f
84.5k
17.8k
4.0091
4.6752
4.2066
3.6831
CLK
Q
1068 TA17a
/40,
19.1786
16.0127
f
4.0678
N
V
400kHz
(kHz)
OUT
TYPE
HPN
LPN
LPN
BP
– 20
– 30
– 40
– 60
–10
– 50
– 70
– 80
10
0
MODE
2
2b
2n
2n
2
4
6
8
Gain vs Frequency
10 12
FREQUENCY (kHz)
14
16
18
20
22
24
1068 TA17b
26
28