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B3555 Datasheet(PDF) 3 Page - EPCOS

Part No. B3555
Description  SAW Components Low-loss Filter
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Manufacturer  EPCOS [EPCOS]
Direct Link  http://www.epcos.com
Logo EPCOS - EPCOS

B3555 Datasheet(HTML) 3 Page - EPCOS

  B3555 Datasheet HTML 1Page - EPCOS B3555 Datasheet HTML 2Page - EPCOS B3555 Datasheet HTML 3Page - EPCOS B3555 Datasheet HTML 4Page - EPCOS B3555 Datasheet HTML 5Page - EPCOS B3555 Datasheet HTML 6Page - EPCOS  
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May 09, 2001
SAW Components
B3555
433,92 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
433,96
MHz
(center frequency between 3 dB points)
Minimum insertion attenuation
α
min
433,80 ... 434,12 MHz
2,2
4,0
dB
Pass band (relative to
α
min)
433,715 ... 434,205 MHz
1,0
2,0
dB
433,675 ... 434,245 MHz
1,0
3,0
dB
433,615 ... 434,305 MHz
2,0
6,0
dB
Relative attenuation (relative to
α
min)
α
rel
10,00 ... 400,00 MHz
40
50
dB
400,00 ... 429,10 MHz
38
45
dB
429,10 ... 430,70 MHz
20
30
dB
430,70 ... 432,00 MHz
35
45
dB
435,30 ... 436,80 MHz
15
25
dB
436,80 ... 438,40 MHz
8
13
dB
438,40 ... 450,00 MHz
24
32
dB
450,00 ... 600,00 MHz
38
48
dB
Impedance for pass band matching 2)
Input:
ZIN
=
RIN
||
CIN
225 || 3,4
Ω || pF
Output:
ZOUT = ROUT || COUT
225 || 3,4
Ω || pF
Temperature coefficient of frequency 1)
TCf
–0,03
ppm/K2
Frequency inversion point
T0
—25—
°C


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