X6872D Datasheet, PDF (3/6 Pages) EPCOS – SAW Components Bandpass Filter

SAW Components
Bandpass Filter
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
Center frequency
f_C
(center between 10 dB points)
Insertion attenuation
α
Reference level for the
36,13 MHz
following data
Pass bandwith
α_rel ≤3 dB
α_rel ≤30 dB
Relative attenuation
33,08
MHz
B_3dB
B_30dB
α_rel
39,17 MHz
32,63 MHz
39,63 MHz
Lower sidelobe
25,00 ... 31,65 MHz
Upper sidelobe
40,65 ... 45,00 MHz
Reflected wave signal suppression
1,3 µs ... 6,0 µs after main pulse
(test pulse 250 ns,
carrier frequency 36,13 MHz)
Feedthrough signal suppression
1,3 µs ... 1,2 µs before main pulse
(test pulse 250 ns,
carrier frequency 36,13 MHz)
Group delay ripple (p-p)
∆τ
32,63 ... 39,63 MHz
Impedance at 36,13 MHz
Input: Z_IN = R_IN || C_IN
Output: Z_OUT = R_OUT || C_OUT
Temperature coefficient of frequency
TC_f
min.
—
18,5
—
—
—
—
—
—
38,0
37,0
42,0
50,0
—
—
—
—
X6872D
36,125 MHz
typ.
max.
36,125 — MHz
20,0
21,5 dB
6,9
— MHz
8,5
— MHz
0,5
— dB
0,6
— dB
3,6
— dB
3,8
— dB
46,0
—
42,0
—
52,0
— dB
56,0
— dB
40
— ns
3,4 ||13,3
2,2 || 4,3
–72
— kΩ || pF
— kΩ || pF
— ppm/K
3 Nov 18, 2003