LTC1068 Linear Technology, LTC1068 Datasheet - Page 28

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

RELATED PARTS
LTC1068 Series
PART NUMBER
LTC1064
LTC1067/LTC1067-50
LTC1164
LTC1264
28
TYPICAL
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
APPLICATION
LTC1068-200 8th Order Notch, f
Attenuation at f
V
5V
DESCRIPTION
Universal Filter, Quad 2nd Order
Low Power, Dual 2nd Order
Low Power Universal Filter, Quad 2nd Order
High Speed Universal Filter, Quad 2nd Order
IN
R11 51.1k
NOTCH
U
8.06k
8.06k
R61
R63
178k
R43
R21 5.11k
R31 51.1k
C23 470pF
R41 100k
R33 124k
R23 10k
C21
470pF
Greater Than 70dB for f
0.1 F
5.11k
5.11k
– 20
– 30
– 40
– 50
– 60
– 80
– 90
–10
–70
R51
R53
10
0
NOTCH
0.8
RELATIVE FREQUENCY (f
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Gain vs Frequency
= f
INV A
INV B
HPB/NB
BPB
LPB
SB
NC
AGND
NC
SA
LPA
BPA
HPA/NA
0.9
V
+
CLK
LTC1068-200
R
R
/256, f – 3dB at (0.9) (f
H1
H3
5.11k
1.0
5.11k
NOTCH
HPB/NC
INV C
INV D
BPC
BPD
HPD
LPC
CLK
LPD
SC
V
NC
NC
SD
IN
1.1
–
in the Frequency Range 200Hz to 5kHz
/f
COMMENTS
50:1 and 100:1 Clock-to-f
Rail-to-Rail, V
50:1 and 100:1 Clock-to-f
20:1 Clock-to-f
NOTCH
28
27
26
25
24
23
22
21
20
19
18
17
16
15
)
1.2
1068 TA02
R52
5.11k
R54
5.11k
0.1 F
R24 7.32k
R
R
R34 75k
H4
L4
S
R22 6.34k
R32 84.3k
C22 470pF
R
O
NOTCH
R64 7.87k
H2
5.11k
475k
= 3V to 5V
R
R62 5.76k
Ratio, f
L2
5.11k
1068 TA01
66.5k
) and (1.05)(f
O
O
O
to 200kHz, V
Ratios, f
Ratios, f
1068fa LT/TP 0998 2K REV A • PRINTED IN USA
f
LINEAR TECHNOLOGY CORPORATION 1996
–5V
CLK
O
O
NOTCH
= (256)(f
to 100kHz, V
to 20kHz, V
S
–
+
= Up to 7.5V
LT1354
),
15k
NOTCH
R
G
)
S
S
= Up to 7.5V
= Up to 7.5V
V
OUT