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B3573 Datasheet(PDF) 3 Page - EPCOS

Part No. B3573
Description  SAW Components Low-loss Filter 869,60 MHz
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Manufacturer  EPCOS [EPCOS]
Direct Link  http://www.epcos.com
Logo EPCOS - EPCOS

B3573 Datasheet(HTML) 3 Page - EPCOS

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May 09, 2001
SAW Components
B3573
869,60 MHz
Low-loss Filter
Data Sheet
Characteristics
Reference temperature:
TA = 25 ˚C
Terminating source impedance:
ZS = 50 Ω and matching network
Terminating load impedance:
ZL = 50 Ω and matching network
1)Temperature dependence of fC: fC(TA) = fC(T0) (1 + TCf(TA – T0)2)
2) 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
869,69
MHz
(center frequency between 3 dB points)
Minimum insertion attenuation
α
min
869,20 ... 870,18 MHz
2,8
4,3
dB
Pass band (relative to
α
min)
869,20 ... 870,18 MHz
1,2
3,0
dB
869,12 ... 870,26 MHz
1,8
6,0
dB
Relative attenuation (relative to
α
min)
α
rel
10,00 ... 700,00 MHz
50
55
dB
700,00 ... 843,00 MHz
35
40
dB
843,00 ... 865,20 MHz
28
33
dB
865,20 ... 867,00 MHz
8
13
dB
871,69 ... 872,50 MHz
8
13
dB
872,50 ... 880,00 MHz
15
20
dB
880,00 ... 910,00 MHz
24
29
dB
910,00 ...1000,00 MHz
35
40
dB
Impedance for pass band matching 2)
Input:
ZIN
=
RIN
||
CIN
232 || 2,10
Ω || pF
Output:
ZOUT = ROUT || COUT
243 || 2,10
Ω || pF
Temperature coefficient of frequency 1)
TCf
–0,03
ppm/K2
Frequency inversion point
T0
—25
°C


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