B3853 Просмотр технического описания (PDF) - EPCOS AG
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B3853 Datasheet PDF : 7 Pages
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SAW Components
Low-Loss Filter
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B3853
141,0 MHz
T = 0 to +85 ˚C
ZS = 50 Ω and external matching network
ZL = 50 Ω and external matching network
Nominal frequency
min.
typ.
max.
fN
—
141,0
— MHz
Minimum insertion attenuation
αN
—
11,0
13,0 dB
3,75 dB bandwidth
αrel ≤ 3,75dB
B3,75dB
1,18
1,32 — MHz
Amplitude ripple (p-p)
fN ± 525 kHz ∆α
—
0,2
1,0 dB
Phase Linearity (rms)
fN ± 630 kHz ∆ϕ
—
1,0
2,0 deg
Absolute group delay
@ fN
τ
—
2,75 — µs
Group delay ripple (p-p)
fN ± 525 kHz ∆τ
—
100
300 ns
Relative attenuation (relative to αN)
αrel
50 MHz ...
120 MHz
50
60
— dB
120 MHz ...
fN − 1350 kHz ...
fN + 1250 kHz ...
fN + 1750 kHz ...
175 MHz ...
fN − 1350 kHz
fN − 1250 kHz
fN + 1750 kHz
175 MHz 1)
500 MHz
45
52
— dB
41
45
— dB
41
45
— dB
45
48
— dB
60
70
— dB
Return loss
fN ± 525 kHz
10
15
— dB
3rd-order intercept point
IP3
40
45
— dB
Temperature coefficient of frequency 2)
TCf
—
Turnover temperature
T0
—
–0,036 —
42,5
—
1) Except for two peaks around 144 and 146 MHz with typically 45dB
2) Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2)
ppm/K2
˚C
3 Sep 30, 2002
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