B3817 datasheet(3/7 Pages) EPCOS

Part #	B3817

Description	SAW Components Low-loss Filter 208,0 MHz

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May 30, 2005

SAW Components

B3817

208,0 MHz

Low-Loss Filter

Data Sheet

Characteristics

Operating temperature range:

T

= 0 ... 70 ˚C

Terminating source impedance:

ZS = 50 Ω and matching network

Terminating load impedance:

ZL = 200 Ω and matching network

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

min.

typ.

max.

Nominal frequency

fN

—

208,0

—

MHz

Minimum insertion attenuation

α

min

(including matching network)

fN ± 1,92 MHz

—

11,7

13,0

dB

Passband width

α

rel ≤ 1 dB

B1dB

—

4,2

—

MHz

Amplitude ripple (p-p)

∆α

fN ± 1,92 MHz

—

0,7

1,0

dB

Phase ripple (p-p)

∆ϕ

fN ± 1,92 MHz

—

7

10

˚

Phase ripple (rms)

∆ϕ

fN ± 1,92 MHz

—

1,1

—

˚ rms

Absolute group delay

τ

mean

mean value within

fN ± 1,92 MHz

790

795

800

ns

Relative attenuation (relative to

α

min)

α

rel

fN ± 2,53 MHz ... fN ± 2,70 MHz

9

10

—

dB

fN ± 2,70 MHz ... fN ± 2,75 MHz

15

20

—

dB

fN ± 2,75 MHz ... fN ± 2,90 MHz

20

30

—

dB

fN ± 2,90 MHz ... fN ± 3,30 MHz

25

30

—

dB

fN ± 3,30 MHz ... fN ±

10 MHz

30

35

—

dB

fN ±

10 MHz ...

fN ±

28 MHz

40

50

—

dB

fN ±

28 MHz ...

fN ±

60 MHz

55

60

—

dB

Input IP3

40

—

dBm

Temperature coefficient of frequency1)

TCf

—

– 0,036

—

ppm/K2

Turnover temperature

T0

—25—

˚C

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