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SAW Components
Low-Loss Filter
Data Sheet
Characteristics
Operating temperature:
Terminating source impedance:
Terminating load impedance:
T = -10 .. +80 ?C
Z S =50 ? and matching network
Z S =50 ? and matching network
B3807
326,4 MHz
min.
typ.
max.
Nominal frequency
Minimum insertion attenuation
f N
α min
—
—
326,4
2,0
—
4,0
MHz
dB
Amplitude ripple (p-p)
?α
f N -2,5 MHz...f N +2,5 MHz
f N -7,5 MHz...f N +7,5 MHz
—
—
0,3
1,0
0,5
3,0
dB
dB
Pass bandwidth
B 1,0dB
α rel ≤ 1,0 dB
—
15
—
MHz
B 10dB
α rel ≤ 10 dB
—
20
—
MHz
Relative attenuation (relative to α min )
α rel
10,0 MHz ...
f N ?
18,0 MHz
40
50
—
dB
f N ? 38,395 MHz ...
f N ? 19,195 MHz ...
f N ? 38,405 MHz
f N ? 19,205 MHz
43
43
50
50
—
—
dB
dB
f N ?
f N +
18,0 MHz ...
12,5 MHz ...
f N ? 12,5 MHz
f N + 30,0 MHz
13
11
15
13
—
—
dB
dB
f N + 30,0 MHz ...
f N + 450,0 MHz
25
30
—
dB
Group delay ripple (p-p)
?τ
f N - 7,5 MHz...f N - 2,5 MHz
f N - 2,5 MHz...f N +2,5 MHz
f N +2,5 MHz...f N +7,5 MHz
—
—
—
90
15
50
110
25
65
ns
ns
ns
Return Loss
f N -2,5 MHz...f N +2,5 MHz
f N -7,0 MHz...f N +7,0 MHz
f N -7,5 MHz...f N +7,5 MHz
10
8
5
11
10
8
—
—
—
dB
dB
dB
Impedance at f N (without matching) 1
Input: Z IN = R IN
|| C IN
—
72 || 0,4
—
? || pF
Output: Z OUT = R OUT || C OUT
—
73 || 0,2
—
? || pF
Temperature coefficient of frequency
TC f
—
– 70
—
ppm/K
1 (port
extensions directly at filter)
3
Aug 12, 2002
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