參數(shù)資料
型號: K2955M
廠商: Electronic Theatre Controls, Inc.
英文描述: Aluminum Electrolytic Radial Lead Low Impedance Capacitor; Capacitance: 1500uF; Voltage: 6.3V; Case Size: 10x12.5 mm; Packaging: Bulk
中文描述: 中頻濾波器載波應(yīng)用
文件頁數(shù): 3/6頁
文件大小: 82K
代理商: K2955M
3
May 08, 2001
SAW Components
IF Filter for Intercarrier Applications
Data Sheet
K 2955 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
15,7
17,2
18,7
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
4,7
2,6
18,5
19,4
48,0
43,0
42,0
43,0
38,0
5,7
3,6
20,0
20,4
66,0
58,0
53,0
52,0
44,0
6,7
4,6
21,5
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
54,0
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
–65
ns
ns
0
Impedance
at 37,40 MHz
Input:
Output: Z
OUT
= R
OUT
|| C
OUT
Z
IN
= R
IN
|| C
IN
2,2||10,7
3,1|| 2,8
k
|| pF
k
|| pF
Temperature coefficient of frequency
TC
f
–72
ppm/K
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