B3855 datasheet(3/5 Pages) EPCOS

3 / 5 page

Jan 31, 2005

SAW Components

B3855

169,00 MHz

Low Loss Filter

Data Sheet

Characteristics

Operating temperature:

TA = -40 ... +85 ˚C

Terminating source impedance:

ZS = 200 Ω and matching network

Terminating load impedance:

ZL = 200 Ω and matching network

Group delay aperture:

150 kHz

min.

typ.

max.

Nominal frequency

—

169,00

—

MHz

Minimum insertion attenuation

min

1,5

2,0

3,5

(including matching network)

Passband width

rel ≤ 1 dB

B1dB

—

7,5

—

MHz

Amplitude ripple (p-p)

∆α

fN ± 2,0 MHz

—

0,2

0,5

Group delay ripple (p-p)

∆τ

fN ± 2,0 MHz

—

Absolute group delay

mean value within

fN ± 2,0 MHz

127

130

137

Relative attenuation (relative to

min)

rel

10 MHz

...

144 MHz

—

144 MHz

...

148 MHz

—

190 MHz

...

194 MHz

—

194 MHz

...

2,0 GHz

—

2,0 GHz

...

2,5 GHz

—

VSWR

—

2,0:1

2,5:1

Impedance at fN (without matching)

Input:

ZIN = RIN || CIN

—

690 || 1,3

—

Ω || pF

Output: ZOUT=ROUT || COUT

—

580 || 1,1

—

Ω || pF

Temperature coefficient of frequency

TCf

—

– 70

—

ppm/K

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