B7304 Datasheet, PDF (3/6 Pages) EPCOS – SAW Components Low-Loss Filter for Mobile Communication 225,0 MHz

SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
T = -25 ˚C ... +80 ˚C
Z_S = 1000 Ω || -1,2 pF
Z_L = 1000 Ω || -1,2 pF
Nominal frequency
min.
typ.
f_N
— 225,00
B7304
225,0 MHz
max.
—
MHz
Maximum insertion attenuation
α_max
—
5,5
6,5 dB
(Including losses in matching circuit)
Amplitude ripple (p-p)
∆α
f_N - 65.0 kHz
... f_N + 65.0 kHz
f_N - 70.0 kHz
... f_N + 70.0 kHz
Group delay ripple (p-p)
∆τ
—
0,3
—
0,4
2,0 dB
3,0 dB
f_N - 70.0 kHz
... f_N + 70.0 kHz
—
0,8
2,5 µs
Relative attenuation (relative to α_max)
α_rel
f_N - 25,00 MHz ... f_N - 3,00 MHz
45
66
— dB
f_N - 3,00 MHz ... f_N - 1,60 MHz
43
64
— dB
f_N - 1,60 MHz ... f_N - 0,60 MHz
38
49
— dB
f_N - 0,60 MHz ... f_N - 0,40 MHz
27
33
— dB
f_N - 0,40 MHz ... f_N - 0,23 MHz
8
16
— dB
f_N + 0,23 MHz
f_N + 0,40 MHz
f_N + 0,60 MHz
f_N + 1,60 MHz
f_N + 3,00 MHz
... f_N + 0,40 MHz
... f_N + 0,60 MHz
... f_N + 1,60 MHz
... f_N + 3,00 MHz
... f_N + 25,00 MHz
Impedance within pass band
Input: Z_IN = R_IN || C_IN
Output: Z_OUT = R_OUT || C_OUT
Temperature coefficient of frequency ¹⁾
TC_f
Frequency inversion point
T₀
8
14
— dB
27
30
— dB
38
43
— dB
43
60
— dB
45
53
— dB
— 1000 || 1,2 — Ω || pF
— ^{1000 || 1,2} — Ω || pF
—
-0,039
— ppm/K²
—
25
— ˚C
1) _{Temperature dependence of fc: fc(T) = fc(T0)(1 + TCf(T – T0)}2
3 Dec 19, 2001