參數(shù)資料
型號： B2580
英文描述： Analog IC
中文描述： 模擬IC
文件頁數(shù)： 3/5頁
文件大?。?/td> 79K
代理商： B2580
3
Apr 04, 2001
SAW Components
Spectrum Shaping Filter
Data Sheet
Characteristics
Operating temperature:
Terminating source impedance:
Terminating load impedance:
B2580
140,0 MHz
T
Z
S
= 50
Z
L
= 50
= 40 C
1) Theoretical frequency response
H(x) = (S(x))
p
1
S(x) =
(1+cos(
π
·(|x|-1+a)/2a))/2
0
x = (f-f
C
)/f
Y
for
for 1-a
for 1+a
≤
|x|
|x|
≤
1-a
< |x| < 1+a
min.
139,85
typ.
140,00
max.
140,15 MHz
Center frequency
(center between 10 dB points)
f
C
Insertion attenuation
at f
C
α
C
26,5
27,5
28,5
dB
Pass band tilt
—
-0,027
—
dB/MHz
Deviation from theoretical frequency resp.
1)
α
f
C
f
C
... f
C
±
(1-a)
f
Y
...
f
C
±
f
Y
—
—
±
0,1
±
0,2
±
0,2
±
0,3
dB
dB
Phase ripple
(p-p)
f
C
...
f
C
±
f
Y
—
1,5
2,0
Relative attenuation
(relative to
α
C
)
α
rel
80,0
105,0
160,5
180,0
... 105,0
... 119,5
... 180,0
... 200,0
MHz
MHz
MHz
MHz
45,0
40,0
39,0
45,0
52,0
43,0
42,0
51,0
—
—
—
—
dB
dB
dB
dB
Reflected wave signal suppression
0,5
μ
s ... 2,5
μ
s after main pulse
50,0
55,0
—
dB
Group delay
at f
C
Nyquist frequency
Roll-off factor
Partitioning factor
τ
C
f
Y
a
p
TC
f
—
—
—
—
—
0,825
13,824
0,45
0,5
– 87
—
—
—
—
—
μ
s
MHz
Temperature coefficient of frequency
ppm/K
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