B4542 datasheet(3/5 Pages) EPCOS

3 / 5 page

May 28, 2003

SAW Components

B4542

110,59 MHz

Low-Loss Filter

Data Sheet

Characteristics

Operating temperature range:

= +25 ˚C

Terminating source impedance:

ZS = 50 Ω

Terminating load impedance:

ZL = 130 Ω || 62 nH

Matching network to 50

Ω (element values depend on PCB layout):

min.

typ.

max.

Nominal frequency

—

110,59

—

MHz

Center frequency

110,48

110,59

110,70

MHz

(center frequency between 10 dB points)

Minimum insertion attenuation

min

—

12,2

13,5

(including loss in matching coils)

Passband width

B3dB

1,1

MHz

B30dB

2,3

MHz

Group delay ripple (p-p)

∆τ

fN - 600 kHz

...

fN + 600 kHz

—

270

350

Relative attenuation (relative to

min)

rel

fN ± 1,6 MHz

...

fN ± 3,1 MHz

—

fN ± 3,1 MHz

...

fN ± 4,6 MHz

—

fN ± 4,6 MHz

...

fN ± 20 MHz

—

fN ±

1,728 MHz

—

fN ± 2×1,728 MHz

—

fN ± 3×1,728 MHz

—

Impedance at

Input:

ZIN

RIN

CIN

—

170 || 30

—

Ω || pF

Output:

ZOUT = ROUT || COUT

—

170 || 30

—

Ω || pF

Temperature coefficient of frequency

TCf

—

– 18

—

ppm/K

Ls1 =82 nH

Cp2 =47 pF

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