B4843 Datasheet, PDF (3/7 Pages) EPCOS – SAW Components Low-Loss Filter for Mobile Communication 360,00 MHz

SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Ambient temperature:
Terminating source impedance:
Terminating load impedance:
T = -20˚C to +75˚C
Z_S = 780 Ω || -1,9 pF
Z_L = 780 Ω || -1,9 pF
B4843
360,00 MHz
Nominal frequency
(center frequency between 3 dB points)
min.
typ.
max.
f_N
—
360,00 — MHz
Minimum insertion attenuation
including loss in matching network
α_min
excluding loss in matching elements
α_min
Amplitude ripple (p-p)
∆α
f_N -67,5kHz .. f_N+67,5 kHz
f_N -80,0 kHz .. f_N+80,0 kHz
Group delay ripple (p-p)
∆τ
f_N -67,5 kHz .. f_N+67,5 kHz
f_N -80,0 kHz .. f_N+80,0 kHz
Relative attenuation (relative to α_min)
α_rel
f_N ± 300 kHz ... f_N ± 400 kHz
f_N ± 400 kHz ... f_N ± 600 kHz
f_N ± 600 kHz ... f_N ± 800 kHz
f_N ± 800 kHz ... f_N ± 1,6 MHz
f_N ± 1,6 MHz ... f_N ± 3,0 MHz
f_N ± 3,0 MHz ... f_N ± 4,0 MHz
f_N ± 4,0 MHz ... f_N ± 15 MHz
Impedance within the pass band
Input: Z_IN = R_IN || C_IN
Output: Z_OUT = R_OUT || C_OUT
Temperature coefficient of frequency ¹⁾
TC_f
Turnover temperature
T₀
5,0
5,6
6,4 dB
4,3
4,9
5,5 dB
—
0,5
2,0 dB
—
0,5
3,0 dB
—
0,50
1,5 µs
—
0,65
2,0 µs
8
16
21
25
35
38
40
46
48*)
54
50
55
50
65
— dB
— dB
— dB
— dB
— dB
— dB
— dB
—
780 || 1,9 — Ω || pF
—
780 || 1,9 _{— Ω || pF}
—
-0,028
— ppm/K²
—
25
— ˚C
1) _{Temperature dependence of fc: fc(T) = fc(T0)(1 + TCf(T – T0)}2₎
*) _{In the frequency range from 357,8 MHz to 358,2 MHz there exists one spurious response with}
a maximum 3 dB - bandwidth of 150 kHz. The minimum attenuation α_rel of this spurious
response is more than 46 dB.
3 Apr 11, 2002