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參數(shù)資料
| 型號(hào)： | J1981M |
| 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> | 89K |
| 代理商： | J1981M |
3
May 30, 2000
SAW Components
IF Filter for Intercarrier Applications
Data Sheet
J 1981 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
13,9
15,4
16,9
dB
Relative attenuation
Picture carrier
Color carrier
Sound carrier
Adjacent picture carrier
Adjacent picture carrier
Adjacent picture carrier
α
rel
38,90 MHz
34,47 MHz
32,90 MHz
32,35 MHz
30,90 MHz
30,40 MHz
31,40 MHz
40,90 MHz
40,35 MHz
4,8
–0,2
12,7
11,4
50,0
50,0
46,0
50,0
43,0
42,0
42,0
5,8
0,8
13,7
12,4
57,0
62,0
60,0
58,0
50,0
46,0
46,0
6,8
1,8
14,7
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Adjacent sound carrier
Adjacent sound carrier
Lower sidelobe
Upper sidelobe
25,00 ... 30,90 MHz
40,90 ... 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
52,0
—
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 ripple
(p-p)
τ
—
40
—
ns
Impedance
at 37,40 MHz
Input:
Output: Z
OUT
= R
OUT
|| C
OUT
Z
IN
= R
IN
|| C
IN
—
—
1,6||15,4
2,5|| 3,9
—
—
k
|| pF
k
|| pF
Temperature coefficient of frequency
TC
f
—
–72
—
ppm/K
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