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參數(shù)資料
| 型號： | B3557 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 62K |
| 代理商： | B3557 |
3
May 24, 2000
SAW Components
Low-loss Filter
Data Sheet
B3557
434,42 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.
434,46
max.
—
Center frequency
(center frequency between 3 dB points)
f
C
MHz
Minimum insertion attenuation
α
min
434,30 ... 434,62 MHz
—
2,0
4,0
dB
Pass band
(relative to
α
min
)
434,24 ... 434,68 MHz
434,18 ... 434,74 MHz
—
—
1,5
2,0
3,0
6,0
dB
dB
Relative attenuation
(relative to
α
min
)
α
rel
10,00 ... 414,50 MHz
414,50 ... 428,50 MHz
428,50 ... 433,42 MHz
435,42 ... 442,50 MHz
442,50 ... 550,00 MHz
550,00 ...1000,00 MHz
45
40
15
10
35
42
50
45
25
20
40
45
—
—
—
—
—
—
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
—
—
270 ||2,7
250 ||3,2
—
—
|| pF
|| pF
ppm/K
2
Temperature coefficient of frequency
1)
TC
f
T
0
—
–0,03
—
Frequency inversion point
—
25
—
°
C
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