B3841 Datasheet, PDF (3/6 Pages) EPCOS – SAW Components Low-Loss Filter 174,2 MHz

SAW Components
Low-Loss Filter
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
T = -5 to +85 ˚C
Z_S = 250 Ω || 43 nH
Z_L = 400 Ω || 92 nH
B3841
174,2 MHz
Nominal frequency
min.
f_N
—
Minimum insertion attenuation
α_min
—
3dB bandwidth
α_rel ≤ 3,0 dB
B_3,0dB 660
Amplitude ripple (p-p)
f_N ± 67 kHz ∆α
—
f_N ± 125 kHz ∆α
—
f_N ± 200 kHz ∆α
—
Absolute group delay (at f_N )
τ
—
Group delay ripple (p-p)
f_N ± 200 kHz ∆τ
—
Relative attenuation (relative to α_min)
α_rel
f_N ± 469 kHz
... f_N ± 600 kHz
4
f_N ± 600 kHz
... f_N ± 860 kHz
11
f_N ± 860 kHz
... f_N ± 1200 kHz
20
20
MHz ... 168,2 MHz
50
168,2 MHz ... f_N − 1200 kHz
40
f_N + 1200 kHz ... 180,2 MHz
40
180,2 MHz ... 400
MHz
50
typ.
174,2
6,2
730
0,1
0,3
0,6
2,3
190
10
20
30
60
50
43
70
max.
— MHz
8,0 dB
— kHz
0,25 dB
1,0 dB
1,2 dB
2,6 µs
260 ns
— dB
— dB
— dB
— dB
— dB
— dB
— dB
Return loss (at f_N )
10
12
—
Temperature coefficient of frequency ¹⁾
Turnover temperature
TC_f
—
T₀
—
–0,036 —
40
—
1) _{Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)}2₎
dB
ppm/K²
˚C
3 Feb 26, 2002