B3892 datasheet(3/6 Pages) EPCOS

3 / 6 page

Jul 16, 2004

SAW Components

B3892

248,6 MHz

Low-Loss Filter

Data Sheet

Characteristics

Operating temperature:

= -5 ˚C to 75 ˚C

Terminating source impedance:

ZS =50 Ω and matching network

Terminating load impedance:

ZL =50 Ω and matching network

1) Temperature dependence of fc: fc(T) = fc(T0)(1 + TCf(T – T0)2)

min.

typ.

max.

Nominal frequency

—

248,6

—

MHz

Minimum insertion attenuation

min

(including losses in matching network)

—

4,7

6,0

Passband width

rel ≤ 3,0 dB

B3,0dB

—

430

—

kHz

Amplitude ripple (p-p)

∆α

fN ± 100,0 kHz

—

0,5

1,0

Group delay ripple (p-p)

∆τ

fN ± 100,0 kHz

—

0,6

0,7

µs

Relative attenuation (relative to

min)

rel

fN ± 0,33 MHz

...

fN ± 0,60 MHz

—

fN ± 0,60 MHz

...

fN ± 0,80 MHz

—

fN ± 0,80 MHz

...

fN ± 1,60 MHz

—

10,0 MHz

...

fN - 29,20 MHz

—

fN - 29,20 MHz

...

fN - 1,60 MHz

—

fN + 1,60 MHz

...

fN + 100,0 MHz

—

@ fN + 22,80 MHz

—

@ fN + 52,00 MHz

—

@ fN + 74,80 MHz

—

@ fN + 104,0 MHz

—

@ fN + 126,8 MHz

—

Temperature coefficient of frequency 1)

TCf

—

–0,036

—

ppm/K2

Frequency inversion point

—35—

˚C

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