16
LTC1264
1264fb
© LINEAR TECHNOLOGY CORPORATION 1993
U
A
O
PP
L
IC
AT
ITY
P
I
CA
L
8th Order Bandpass Filter, Linear Phase
LT/LT 0805 REV B • PRINTED IN USA
1264 TA07a
f
CLK
1MHz
1.5MHz
2.0MHz
C
0pF
5pF
10pF
R2
R
H
V
IN
V
OUT
INV B
HPB/NB
BPB
LPB
SB
AGND
V
+
SA
LPA
BPA
HPA/NA
INV A
INV C
HPC/NC
BPC
LPC
SC
V
–
CLK
SD
LPD
BPD
HPD/ND
INV D
R3
R2
R4
R1
LTC1264
7.5V
R
L
R4
R
H
R
L
R3
R2
R3
R4
C
1MHz
R4
R3
R2
R1
LTC1264 SIDE
MODE
R1
R2
R3
R4
R
H
R
L
B
3a
97.6k
10.7k
39.2k
13.3k
C
3
12.4k
39.2k
10.7k
53.6
15.0k
A
3a
32.4k
10.7k
12.4k
11.5k
D
3
10.0k
29.4k
10.0k
27.4k
100.0k
–7.5V
0.1µF
0.1µF
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
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Building Block Frequency, ≤40µV
RMS
Noise per 2nd Order Section, Operation 3.3V to ±5V
LTC1068-25 High Speed, High Accuracy, Quad Universal Four 2nd Order Filter Sections in 28-Pin SSOP, 200kHz Max Center
Filter Building Block Frequency, Operation 3.3V to ±5V
LTC1068-50 Low Power, High Accuracy, Quad Universal Four 2nd Order Filter Sections in 28-Pin SSOP, 40kHz Max Center
Filter Building Block Frequency, 3.5mA at Single 5V, Operation 3.3V to ±5V
LTC1562 Very Low Noise, Low Distortion, Active RC Quad Four 2nd Order Filter Sections, No Clock Required, 150kHz Max Center
Universal Filter Frequency, SSOP
50kHz Bandpass Filter, Linear Phase
Gain vs Frequency
FREQUENCY (kHz)
40
GAIN (dB)
3
0
–3
–6
–9
–12
–15
–18
–21
–24
–27
56
1264 TA07c
44
48
52
60
42
46 50
54
58
124
114
104
94
84
74
64
54
44
34
24
GROUP DELAY (µs)
GAIN
DELAY
FREQUENCY (Hz)
10k
GAIN (dB)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
100k 1M
1264 TA07b
V
S
= ±7.5V
f
CLK
= 1MHz
Passband Gain and Group Delay
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
