參數(shù)資料
型號(hào): B3558
英文描述: Analog IC
中文描述: 模擬IC
文件頁(yè)數(shù): 3/7頁(yè)
文件大小: 65K
代理商: B3558
3
Dec 15, 1999
SAW Components
Low-loss Filter
Data Sheet
B3558
449,10 MHz
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
T
A
= 25 C
Z
S
= 50
and matching network
Z
L
= 50
and matching network
1)
Temperature dependence of f
C
: f
C
(T
A
) =
f
C
(T
0
) (1 + TC
f
(T
A
– T
0
)
2
)
min.
typ.
449,14
max.
Center frequency
(center frequency between 3 dB points)
f
C
MHz
Minimum insertion attenuation
α
min
449,00 ... 449,28 MHz
2,2
3,2
dB
Pass band
(relative to
α
min
)
448,965 ... 449,315 MHz
448,930 ... 449,350 MHz
0,8
1,5
3,0
6,0
dB
dB
Relative attenuation
(relative to
α
min
)
α
rel
10,00 ... 428,00 MHz
428,00 ... 439,00 MHz
439,00 ... 448,10 MHz
450,10 ... 459,00 MHz
459,00 ... 550,00 MHz
550,00 ... 1000,00 MHz
45
40
15
15
40
45
50
45
25
25
45
50
dB
dB
dB
dB
dB
dB
Impedance
for pass band matching
Input:
Output: Z
OUT
= R
OUT
|| C
OUT
Z
IN
= R
IN
|| C
IN
210 ||2,70
210 ||2,70
|| pF
|| pF
ppm/K
2
Temperature coefficient of frequency
1)
TC
f
T
0
–0,03
Frequency inversion point
20
40
°
C
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