B3874 datasheet(3/7 Pages) EPCOS

3 / 7 page

May 06, 2004

SAW Components

B3874

71,1 MHz

Low-Loss Filter

Data Sheet

Characteristics

Operating temperature range:

= 0 to +85 ˚C

Terminating source impedance:

ZS = 50 Ω and external matching network

Terminating load impedance:

ZL = 50 Ω and external matching network

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

min.

typ.

max.

Nominal frequency

—

71,1

—

MHz

Minimum insertion attenuation

—

9,0

11,0

3,75 dB bandwidth

rel

≤ 3,75 dB

B3,75dB

1,18

1,24

—

MHz

Amplitude ripple (p-p)

fN ± 525 kHz

∆α

—

0,5

1,0

Phase Linearity (rms)

fN ± 630 kHz

∆ϕ

—

1,3

2,0

deg

Absolute group delay

fN ± 630 kHz

—

3,1

—

µs

Group delay ripple (p-p)

fN ± 525 kHz

∆τ

—

320

450

Relative attenuation (relative to

rel

31,0 MHz

...

fN − 4900 kHz

—

fN − 4900 kHz

...

fN − 900 kHz

—

fN − 900 kHz

...

fN − 750 kHz

—

fN + 750 kHz

...

fN + 900 kHz

—

fN + 900 kHz

...

fN + 4900 kHz

—

fN + 4900 kHz

...

500 MHz

—

Input Return loss

fN ± 525 kHz

—

Output Return loss

fN ± 525 kHz

—

3rd-order intercept point

IP3

—

Temperature coefficient of frequency 1)

TCf

—

–0,036

—

ppm/K2

Turnover temperature

—35

—

˚C

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