B3550 データシートの表示（PDF） - Unspecified
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B3550 Datasheet PDF : 7 Pages
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SAW Components
Low-loss Filter
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
Center frequency
(center frequency between 3 dB points)
B3550
433,92 MHz
TA = –45 ... 95˚C
ZS = 50 Ω and matching network
ZL = 50 Ω and matching network
min.
typ.
max.
fC
—
433,92
— MHz
Minimum insertion attenuation
αmin
433,80 ... 434,12 MHz
—
2,0
4,0 dB
Pass band (relative to αmin)
433,76 ... 434,08 MHz
433,74 ... 434,10 MHz
433,68 ... 434,16 MHz
—
1,0
2,0 dB
—
1,0
3,0 dB
—
1,5
6,0 dB
Pass bandwidth
αrel≤ 3 dB
Relative attenuation (relative to αmin)
αrel
10,00 ... 414,00 MHz
414,00 ... 428,00 MHz
428,00 ... 432,84 MHz
434,92 ... 442,00 MHz
442,00 ... 550,00 MHz
550,00 ...1000,00 MHz
0,67
45
40
15
10
35
45
0,73
50
45
20
15
40
50
0,79 MHz
— dB
— dB
— dB
— dB
— dB
— dB
Impedance for pass band matching 2)
Input: ZIN = RIN || CIN
Output: ZOUT = ROUT || COUT
— 270 || 2,67 — Ω || pF
— 250 || 3,20 — Ω || pF
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.
4 May 09, 2001
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