B3643 datasheet(3/5 Pages) EPCOS

3 / 5 page

Apr 04, 2001

SAW Components

B3643

371,0 MHz

Low-Loss Filter

Data Sheet

Characteristics

Operating temperature range:

TA = -20 .. +60 ˚C

Terminating source impedance:

ZS = 50 Ω and matching network

Terminating load impedance:

ZL = 50 Ω and matching network

1) Temperature dependance of fC:

fC(TA) = fC(T0)(1 + TCf(TA - T0)2)

Matching network (Element values depend upon PCB layout)

Cp1 = 15 pF

Ls2 = 27 nH

Ls3 = 22 nH

Cp4 = 15 pF

min.

typ.

max.

Nominal frequency

—

371,0

—

MHz

Insertion attenuation at

—

11,5

Pass bandwidth

rel < 1 dB

B1dB

1,3

1,6

—

MHz

rel < 3 dB

B3dB

—

2,0

2,5

MHz

Amplitude ripple (p-p)

∆α

fN - 0,5 MHz ... fN + 0,5 MHz

—

0,3

1,0

Amplitude slope in passband

—

0,0

±0,5

Group delay ripple (p-p)

∆τ

fN - 0,65 MHz ... fN + 0,65 MHz

—

120

fN - 1,00 MHz ... fN + 1,00 MHz

—

Relative attenuation (relative to

rel

fN - 50 MHz ... fN - 15 MHz

—

fN - 15 MHz ... fN - 5 MHz

—

fN + 5 MHz ... fN + 25 MHz

—

fN + 25 MHz ... fN + 50 MHz

—

Temperature coefficient of frequency 1)

TCf

—

-0,036

—

ppm/K2

Turnover temperature

—16

—

˚C

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