B3825 datasheet(4/7 Pages) EPCOS

4 / 7 page

April 26, 2005

SAW Components

B3825

380,00 MHz

Low-Loss Filter

Data Sheet

1) Matching inductor Q=40

2) Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2)

min.

typ.

max.

f1 = 390 MHz, input power 0 dBm

f2 = 400 MHz, input power 0 dBm

-120

-95

-85

dBm

f1 = 390 MHz, input power -5 dBm

f2 = 400 MHz, input power -5 dBm

-135

-110

-100

dBm

Minimum relative attenuation (relative to

min)

rel

fN - 5,0 MHz

fN + 5,0 MHz

...

fN - 20,0 MHz

fN - 20,0 MHz ... fN - 17,5 MHz

fN - 17,5 MHz ... fN - 13,5 MHz

fN - 13,5 MHz ... fN -

7,5 MHz

fN - 7,5 MHz ... fN -

4,1 MHz

fN - 4,1 MHz ... fN -

3,2 MHz

fN + 3,2 MHz ... fN + 4,1 MHz

fN + 4,1 MHz ... fN + 5,0 MHz

fN + 5,0 MHz ... fN + 8,0 MHz

fN + 8,0 MHz ... fN + 10,5 MHz

fN + 10,5 MHz ... fN + 17,5 MHz

fN + 17,5 MHz ... fN + 20,0 MHz

fN + 20,0 MHz ... fN +100,0 MHz

Impedance at fN (without matching)

Input:

ZIN = RIN || CIN

—

795 || 6

—

Ω || pF

Output: ZOUT=ROUT || COUT

—

652 || 6

—

Ω || pF

Temperature coefficient of frequency 2)

TCf

—

–0,036

—

ppm/K2

Turnover temperature

—25

—

˚C

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