X7253D Datasheet, PDF (3/9 Pages) EPCOS – SAW Components Bandpass Filter

SAW Components
Bandpass Filter
Data Sheet
Characteristics of channel 1 (switching pin 2 connected to ground)
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
36,00 MHz
min.
19,5
typ.
21,0
Amplitude ripple
∆α
32,45 ... 39,55 MHz
—
1,9
X 7253 D
36,00 MHz
max.
22,5 dB
— dB
Pass bandwidth
α_rel < 3 dB
α_rel < 15 dB
B_3dB
B_15dB
Relative attenuation
Adjacent picture carrier
Adjacent sound carrier
Lower sidelobe
Upper sidelobe
25,00
41,50
α_rel
30,75 MHz
40,25 MHz
40,75 MHz
41,25 MHz
31,80 MHz
... 30,75 MHz
... 45,00 MHz
Reflected wave signal suppression
1,3 µs ... 6,0 µs after main pulse
(test pulse 250 ns,
carrier frequency 36,00 MHz)
Feedthrough signal suppression
1,3 µs ... 1,2 µs before main pulse
(test pulse 250 ns,
carrier frequency 36,00 MHz)
Group delay ripple (p-p)
∆τ
32,20 ... 39,80 MHz
Impedance at 36,00 MHz
Input: Z_IN = R_IN || C_IN
Output: Z_OUT = R_OUT || C_OUT
Temperature coefficient of frequency
TC_f
—
7,7
—
8,3
40,0
48,0
18,0
28,0
31,0
39,0
34,0
41,0
11,0
17,0
34,0
39,0
34,0
40,0
40,0
50,0
—
50,0
—
60
— 1,5 ||18,3
—
2,3 || 4,6
—
–72
— MHz
— MHz
— dB
— dB
— dB
— dB
— dB
— dB
— dB
— dB
— dB
— ns
— kΩ || pF
— kΩ || pF
— ppm/K
3 Dec 08, 2003