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B3572 Datasheet(PDF) 4 Page - EPCOS

Part No. B3572
Description  SAW Components Low-loss Filter 868,95 MHz
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Manufacturer  EPCOS [EPCOS]
Direct Link  http://www.epcos.com
Logo EPCOS - EPCOS

B3572 Datasheet(HTML) 4 Page - EPCOS

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Mar 10, 2004
SAW Components
B3572
868,95 MHz
Low-loss Filter
Data Sheet
Characteristics
Reference temperature:
TA = –45 ... 90 ˚C
Terminating source impedance:
ZS = 50 Ω and matching network
Terminating load impedance:
ZL = 50 Ω and matching network
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
868,95
MHz
(center frequency between 3 dB points)
Minimum insertion attenuation
α
min
868,70 ... 869,20 MHz
2,7
4,7
dB
Pass band (relative to
α
min)
868,70 ... 869,20 MHz
1,0
3,0
dB
868,60 ... 869,30 MHz
1,5
6,0
dB
Relative attenuation (relative to
α
min)
α
rel
10,00 ... 700,00 MHz
50
55
dB
700,00 ... 830,00 MHz
35
45
dB
830,00 ... 850,60 MHz
32
40
dB
850,60 ... 865,62 MHz
25
30
dB
871,60 ... 875,10 MHz
11
16
dB
875,10 ... 883,60 MHz
22
27
dB
883,60 ... 900,00 MHz
30
35
dB
900,00 ...1000,00 MHz
35
40
dB
Impedance for pass band matching 2)
Input:
ZIN
=
RIN
||
CIN
200 || 2,40
Ω || pF
Output:
ZOUT = ROUT || COUT
200 || 2,40
Ω || pF


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