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B39321-B3761-Z810 Datasheet(PDF) 3 Page - EPCOS

Part # B39321-B3761-Z810
Description  SAW Components Low-loss Filter 315,00 MHz
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Manufacturer  EPCOS [EPCOS]
Direct Link  http://www.epcos.com
Logo EPCOS - EPCOS

B39321-B3761-Z810 Datasheet(HTML) 3 Page - EPCOS

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Nov 04, 2005
SAW Components
B3761
315,00 MHz
Low-loss Filter
Data Sheet
Characteristics
Reference temperature:
TA = –45 ... +95˚C
Terminating source impedance:
ZS = 50 Ω and matching network
Terminating load impedance:
ZL = 50 Ω and matching network
1) Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to
source- and to load impedance (here 50 Ohm). After the SAW filter is removed and input imped-
ance into the input matching / output matching network is calculated.
The conjugate complex value of these characteristic impedances are the input and output imped-
ances for flat passband. For more details, we refer to EPCOS application note #4.
min.
typ.
max.
Center frequency
fC
315,00
MHz
(center frequency between 3 dB points)
Minimum insertion attenuation
α
min
including loss in matching elements
(QL = 44)
1,9
2,6
dB
excluding loss in matching elements
1,5
2,2
dB
Passband (relative to
α
min)
314,85 ... 315,15 MHz
0,5
2,0
dB
314,82 ... 315,18 MHz
0,7
3,0
dB
314,78 ... 315,22 MHz
1,0
6,0
dB
Filter bandwidth
α
rel≤ 3 dB
0,54
0,59
0,64
MHz
Relative attenuation (relative to
α
min)
α
rel
10,00 ... 294,50 MHz
48
53
dB
294,50 ... 304,50 MHz
45
50
dB
304,50 ... 312,80 MHz
25
30
dB
312,80 ... 313,20 MHz
33
40
dB
313,20 ... 314,30 MHz
13
18
dB
315,70 ... 323,00 MHz
13
17
dB
323,00 ... 335,00 MHz
38
45
dB
335,00 ... 600,00 MHz
43
48
dB
600,00 ...1000,00 MHz
60
70
dB
Impedance for pass band matching 1)
Input:
ZIN
=
RIN
||
CIN
340 || 2,6
Ω || pF
Output:
ZOUT = ROUT || COUT
340 || 2,6
Ω || pF


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