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LTC1068 Datasheet(PDF) 21 Page - Linear Technology

Part # LTC1068
Description  Clock-Tunable, Quad Second Order, Filter Building Blocks
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1068 Datasheet(HTML) 21 Page - Linear Technology

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LTC1068 Series
TYPICAL APPLICATIONS
LTC1068 8th Order Linear Phase Bandpass, fCENTER = fCLK/128,
Passband – 3dB at (0.88)(fCENTER) and (1.12)(fCENTER). Maximum
fCENTER = 40kHz with ±5V Supplies
INV B
INV C
24
1
HPB/NB
HPC/NC
23
2
SB
SC
20
5
R21
4.99k
R22
4.99k
BPB
BPC
22
3
R31
19.6k
R41
12.1k
R32
21.5k
LPA
LPD
16
9
R43
10.7k
BPA
BPD
15
10
R33
14.7k
HPA/NA
HPD/ND
14
11
INV A
INV D
13
12
R23
4.99k
R34
28.7k
R24
4.99k
LPB
LPC
21
4
R11
26.1k
VIN
RL1
63.4k
RH1
7.5k
RB2
16.2k
RH3
40.2k
AGND
V–
19
6
V+
CLK
18
7
SA
SD
17
8
5V
–5V
1.28MHz
1068 TA14a
LTC1068
R52
4.99k
R54
4.99k
0.1
µF
0.1
µF
R62
7.5k
R64 17.8k
RL3
14.7k
VOUT
FREQUENCY (kHz)
1
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
10
100
1068 TA14b
Gain vs Frequency
FilterCAD Custom Inputs for fC = 10kHz
2nd ORDER SECTION
fO (kHz)
Q
fN (kHz)
TYPE
MODE
B
8.2199
2.6702
4.4025
HPN
3a
C
9.9188
3.3388
BP
1b
A
8.7411
2.1125
21.1672
LPN
3a
D
11.3122
5.0830
BP
1b
24-Lead Package



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