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參數(shù)資料
| 型號： | K2971M |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | IF Filter for Intercarrier Applications |
| 中文描述： | 中頻濾波器載波應用 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 82K |
| 代理商： | K2971M |
3
May 08, 2001
SAW Components
IF Filter for Intercarrier Applications
Data Sheet
K 2971 M
38,90 MHz
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
T
A
= 25 C
Z
S
= 50
Z
L
= 2 k
|| 3 pF
min.
typ.
max.
Insertion attenuation
Reference level for the
following data
α
37,40 MHz
14,8
16,3
17,8
dB
Relative attenuation
Picture carrier
Color carrier
Sound carrier
α
rel
38,90 MHz
34,47 MHz
32,40 MHz
33,40 MHz
30,90 MHz
40,40 MHz
41,40 MHz
4,8
-0,3
17,1
17,7
46,0
43,0
42,0
44,0
40,0
5,8
0,7
18,6
19,2
56,0
52,0
51,0
51,0
46,0
6,8
1,7
20,1
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
Adjacent picture carrier
Adjacent sound carrier
Lower sidelobe
Upper sidelobe
25,00 ... 30,90 MHz
40,40 ... 45,00 MHz
Reflected wave signal suppression
1,2
μ
s ... 6,0
μ
s after main pulse
(test pulse 250 ns,
carrier frequency 37,40 MHz)
42,0
53,0
—
dB
Feedthrough signal suppression
1,2
μ
s ... 1,1
μ
s before main pulse
(test pulse 250 ns,
carrier frequency 37,40 MHz)
50,0
56,0
—
dB
Group delay predistortion
(reference frequency 38,90 MHz)
τ
36,50 MHz
34,47 MHz
—
—
–70
20
—
—
ns
ns
Impedance
at 37,40 MHz
Input:
Output: Z
OUT
= R
OUT
|| C
OUT
Z
IN
= R
IN
|| C
IN
—
—
2,0||12,1
3,0|| 2,8
—
—
k
|| pF
k
|| pF
Temperature coefficient of frequency
TC
f
—
–72
—
ppm/K
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