B3897 Просмотр технического описания (PDF) - EPCOS AG

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B3897

SAW Components Low-Loss Filter

EPCOS AG 

SAW Components

Low-Loss Filter

Data Sheet

Characteristics

Operating temperature range:

Terminating source impedance:

Terminating load impedance:

B3897

70,00 MHz

T = -20 to 80 ˚C

ZS = 50 Ω balanced and matching network

ZL = 50 Ω balanced and matching network

Nominal frequency

min.

fN

—

Insertion attenuation at fN

(including matching network)

αN

—

Passband width

αrel ≤ 3,0 dB

B3,0dB

3,5

Amplitude ripple (p-p)

∆α

fN ± 1,425 MHz

—

Phase ripple (p-p)

∆ϕ

fN ± 1,425 MHz

—

Absolute group delay (@ fN)

τ

—

Group delay ripple (p-p)

∆τ

fN ± 1,425 MHz

—

Relative attenuation (relative to αN)

αrel

fN − 3,875 MHz... fN − 20 MHz

40

fN + 3,875 MHz... fN + 20 MHz

37

Temperature coefficient of frequency

TCf

—

typ.

70,0

6,3

max.

— MHz

8,0 dB

4,7

— MHz

0,5

1,0 dB

3,0

7,0 ˚

1,47 — µs

110

175 ns

45

— dB

40

— dB

-87

— ppm/K

Matching network (Element values depend upon PCB layout)

1:1

Lp1 = 68 nH

Lp2 = 68 nH

1:1

3 Sep 05, 2003

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