X6857D Datasheet, PDF (3/7 Pages) EPCOS – SAW Components Bandpass Filter

SAW Components
Bandpass Filter
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
Insertion attenuation
Reference level for the
following data
T_A = 25 ˚C
Z_S = 50 Ω
Z_L = 2 kΩ || 3 pF
α
36,00 MHz
min.
19,0
Amplitude ripple (p-p)
∆α
32,35 ... 39,65 MHz
—
X 6857 D
36,00 MHz
typ.
max.
20,5
22,0 dB
0,7
— dB
Pass bandwidth
α_rel < 1,5 dB
α_rel < 3 dB
α_rel < 15 dB
α_rel < 30 dB
Relative attenuation
B_1,5dB
B_3dB
B_15dB
B_30dB
α_rel
31,65 MHz
40,35 MHz
31,30 MHz
40,70 MHz
—
—
—
—
7,0
7,0
22,0
22,0
7,8
8,1
8,9
9,4
10,0
10,0
29,0
29,0
— MHz
— MHz
— MHz
— MHz
— dB
— dB
— dB
— dB
Lower sidelobe
Upper sidelobe
25,00 ... 31,00 MHz
41,00 ... 45,00 MHz
36,0
40,0
36,0
41,0
Reflected wave signal suppression
1,0 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
32,35 ... 39,65 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
42,0
52,0
— dB
—
50,0
— dB
—
50
— ns
—
2,8 ||15,5 — kΩ || pF
—
2,4 || 4,4
— kΩ || pF
—
–72
— ppm/K
3 Nov 13, 2003