B3898 datasheet(3/7 Pages) EPCOS

3 / 7 page

Jun 12, 2006

B3898

172.80 MHz

SAW Components

SAW IF filter

Data Sheet

Please read

cautions and warnings and

important notes at the end of this document.

Characteristics

Operating temperature range:

–10 to 85 ˚C

Terminating source impedance:

ZS =50 Ω single ended and matching network

Terminating load impedance:

ZL =

200

Ω balanced and matching network

Group delay aperture:

100 kHz

min.

typ.

@ 25 ˚C

max.

Nominal frequency

—

172.8

—

MHz

Minimum insertion attenuation

min

—

10.6

12.5

(including matching network)

Amplitude ripple (p-p)

∆α

fN ± 4.42 MHz

—

0.8

1.5

Group delay ripple (p-p)

∆τ

fN ± 4.42 MHz

—

200

Group delay

@ fN

—

780

1000

VSWR

fN ± 4.42 MHz

—

1.3:1

3.0:1

Phase ripple (p-p)

∆ϕ

fN ± 4.42 MHz

—

Pass bandwidth

B1.5dB

rel ≤ 1.5 dB

8.84

9.2

—

MHz

Adjacent channel selectivity

ACS

—

Relative attenuation (relative to

min)

rel

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

—

646 || 13.4

—

Ω || pF

Output: ZOUT=ROUT || COUT

—

932 || 10.4

—

Ω || pF

Temperature coefficient of frequency

TCf

—

– 18

—

ppm/K

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