B3898 데이터 시트보기 (PDF) - EPCOS AG

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B3898

SAW Components SAW IF filter W-CDMA

EPCOS AG 

SAW Components

SAW IF filter

Data Sheet

Characteristics

Operating temperature range:

Terminating source impedance:

Terminating load impedance:

Group delay aperture:

B3898

172.80 MHz

T=

ZS =

ZL =

–10 to 85 ˚C

50 Ω single ended and matching network

200 Ω balanced and matching network

100 kHz

Nominal frequency

Minimum insertion attenuation

(including matching network)

min.

typ.

max.

@ 25 ˚C

fN

—

172.8

— MHz

αmin

—

10.6

12.5 dB

Amplitude ripple (p-p)

∆α

fN ± 4.42 MHz

—

Group delay ripple (p-p)

∆τ

fN ± 4.42 MHz

—

Group delay

VSWR

@ fN

τ

—

fN ± 4.42 MHz

—

Phase ripple (p-p)

∆ϕ

fN ± 4.42 MHz

—

Pass bandwidth

αrel ≤ 1.5 dB

B1.5dB

8.84

Adjacent channel selectivity

ACS

17

0.8

70

780

1.3:1

10

9.2

22

1.5 dB

200 ns

1000 ns

3.0:1

13 ˚

— MHz

— dB

Relative attenuation (relative to αmin)

αrel

fN ± 8.0 ... fN ± 11.0 MHz

fN ± 11.0 ... fN ± 25.0 MHz

fN ± 25.0 ... fN ± 34.0 MHz

fN ± 34.0 ... fN ± 100 MHz

Impedance at fN (without matching)

Input: ZIN = RIN || CIN

Output: ZOUT= ROUT || COUT

Temperature coefficient of frequency TCf

27

32

35

45

45

60

55

70

— dB

— dB

— dB

— dB

— 646 || 13.4

— 932 || 10.4

— – 18

— Ω || pF

— Ω || pF

— ppm/K

Please read cautions and warnings and

important notes at the end of this document.

3 Jun 12, 2006

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