J1951M Datasheet, PDF (3/6 Pages) EPCOS – IF Filter for Intercarrier Applications

SAW Components
IF Filter for Intercarrier Applications
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
T_A = 25 ˚C
Z_S = 50 Ω
Z_L = 2 kΩ || 3 pF
Insertion attenuation
Reference level for the
following data
α
38,00 MHz
min.
13,5
J 1951 M
39,50 MHz
typ.
max.
15,0
16,5 dB
Relative attenuation
Picture carrier
Color carrier
Sound carrier
Adjacent picture carrier
Adjacent sound carrier
Lower sidelobe
Upper sidelobe
25,00
41,50
α_rel
39,50 MHz
35,07 MHz
33,50 MHz
31,50 MHz
31,00 MHz
32,00 MHz
40,95 MHz
41,50 MHz
... 31,50 MHz
... 45,00 MHz
4,8
5,8
6,8 dB
2,8
3,8
4,8 dB
21,1
22,1
23,1 dB
48,0
60,0
— dB
45,0
52,0
— dB
45,0
52,0
— dB
36,0
42,0
— dB
44,0
54,0
— dB
44,0
50,0
— dB
36,0
40,0
— dB
Reflected wave signal suppression
1,0 µs ... 6,0 µs after main pulse
(test pulse 250 ns,
carrier frequency 38,00 MHz)
44,0
52,0
— dB
Feedthrough signal suppression
0,9 µs ... 0,8 µs before main pulse
(test pulse 250 ns,
carrier frequency 38,00 MHz)
50,0
56,0
— dB
Group delay ripple (p-p)
∆τ
Impedance at 38,00 MHz
Input: Z_IN = R_IN || C_IN
Output: Z_OUT = R_OUT || C_OUT
Temperature coefficient of frequency
TC_f
—
40
— ns
—
2,0 ||10,0 — kΩ || pF
—
2,2 || 4,5
— kΩ || pF
—
–72
— ppm/K
3 Mar 31, 2006