B4871 datasheet(3/7 Pages) EPCOS

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Jan 03, 2003

SAW Components

B4871

135,54MHz

Low Loss Filter for Mobile Communication

Data Sheet

Characteristics

Operating temperature range:

= -30˚C ... 85˚C

Terminating source impedance:

ZS = 850 Ω || - 0,8 pF

Terminating load impedance:

ZL = 850 Ω || - 0,8 pF

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

min.

typ.

max.

Nominal frequency

—

135,54

—

MHz

3 dB Bandwidth

—

kHz

Minimum insertion attenuation

min

—

4,2

5,3

(including losses in the matching network)

Amplitude ripple (p-p)

∆α

fN –

10,0 kHz ... fN +

10,0 kHz

—

0,2

1,5

fN –

13,0 kHz ... fN +

13,0 kHz

—

0,5

3,0

Group delay ripple (p-p)

∆τ

fN –

13,0 kHz ... fN +

13,0 kHz

—

2,0

10,0

µs

Relative attenuation (relative to

min)

rel

fN ±

60,0 kHz ... fN ± 120,0 kHz

—

fN ± 120,0 kHz ... fN ± 240,0 kHz

—

fN ± 240,0 kHz ... fN ± 1000,0 kHz

—

fN ± 330,0 kHz

—

fN ± 660,0 kHz

—

Impedance within the passband

Input:

ZIN

RIN

CIN

—

850 || 0,8

—

Ω || pF

Output:

ZOUT = ROUT || COUT

—

850 || 0,8

—

Ω || pF

Temperature coefficient of frequency 1)

TCf

—

– 0,034

—

ppm/K2

Turnover temperature

—25

—

˚C

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