LTC6601-1 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC6601-1
Linear Technology
'LTC6601-1' PDF : 40 Pages View PDF
LTC6601-1
APPLICATIONS INFORMATION
A GALLERY OF BASIC FILTER TOPOLOGIES
Tables 2 through 10 list (sorted by Gain) a hundred possible
filter topologies that can be easily implemented with the
LTC6601. The tables also list the LTC6601-1 approximate
midband (1MHz) spot noise ein referred to the input re-
sistor, R1 (with the BIAS pin pulled to V+). The gains for
these topologies range from 1V/V to 7V/V. The Qs listed
are within the range of 0.54 and 1.72. The fOs listed are
in the range of 6.96MHz and 22.71MHz, and the –3dB
frequencies listed range from 5.5MHz to 27.5MHz. For
all filters listed, R3 = 125Ω. Figures 7 to 10 show how to
pin-strap each filter configuration.
Table 2. Gain of 7 Filter Configurations
GAIN
V/V
dB
fO (MHz)
7.0
16.902
10.38
7.0
16.902
9.57
7.0
16.902
8.96
7.0
16.902
8.12
f–3dB (MHz)
7.43
10.36
12.10
7.49
Table 3. Gain of 6 Filter Configurations
GAIN
V/V
dB
fO (MHz)
6.0
15.563
10.38
6.0
15.563
9.57
6.0
15.563
8.67
6.0
15.563
8.12
6.0
15.563
7.47
f–3dB (MHz)
10.03
12.52
7.67
9.59
6.07
Table 4. Gain of 5 Filter Configurations
GAIN
V/V
dB
fo (MHz)
5.0
13.979
11.36
5.0
13.979
10.38
5.0
13.979
9.40
5.0
13.979
8.67
5.0
13.979
8.12
5.0
13.979
7.98
5.0
13.979
7.47
5.0
13.979
6.96
f–3dB (MHz)
9.67
12.78
7.67
10.07
11.25
6.46
8.16
5.50
Q
0.539
0.771
1.175
0.656
Q
0.684
1.071
0.634
0.870
0.592
Q
0.614
0.936
0.594
0.849
1.290
0.591
0.779
0.579
R1 (Ω)
57.14
57.14
57.14
57.14
R2 (Ω)
400.00
400.00
400.00
400.00
C1 (pF)
48.2
48.2
48.2
58.75
C2 (pF)
97.6
114.8
130.9
130.9
(nVe/√inHz)
3.7
3.7
3.7
3.7
R1 (Ω)
66.67
66.67
66.67
66.67
66.67
R2 (Ω)
400.00
400.00
400.00
400.00
400.00
C1 (pF)
48.2
48.2
58.75
58.75
69.3
C2 (pF)
97.6
114.8
114.8
130.9
130.9
(nVe/√inHz)
3.8
3.8
3.8
3.8
3.8
R1 (Ω)
80.00
80.00
80.00
80.00
80.00
80.00
80.00
80.00
R2 (Ω)
400.00
400.00
400.00
400.00
400.00
400.00
400.00
400.00
C1 (pF)
48.2
48.2
58.75
58.75
58.75
69.3
69.3
79.85
C2 (pF)
81.5
97.6
97.6
114.8
130.9
114.8
130.9
130.9
nVe/√inHz
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
66011f
22
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