B3860 Ver la hoja de datos (PDF) - EPCOS AG

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fabricante

B3860

SAW Components Low-Loss Filter

EPCOS AG 

SAW Components

Low-Loss Filter

Preliminary Data Sheet

Characteristics

Operating temperature:

Terminating source impedance:

Terminating load impedance:

Nominal frequency

B3860

445,25 MHz

T = -25 ... +75 ˚C

ZS = 75 Ω and matching network

ZL = 75 Ω and matching network

min.

typ.

max.

fN

—

445,25 — MHz

Insertion attenuation at fN (T=25 ˚C)

αN

6,5

8,5

9,5 dB

Variation of insertion att. (rel. to αN)

αrel

—

—

±0,9 dB

Frequency response

3 dB Lower frequency

3 dB Upper frequency

35 dB Lower frequency

35 dB Upper frequency

fL 3dB

fU 3dB

fL35dB

fU35dB

—

445,75

442,25

—

444,40

446,40

442,90

448,00

444,75 MHz

— MHz

— MHz

448,25 MHz

Amplitude ripple (peak to adjacent valley)

fN ± 100 kHz

—

0,3

0,5 dB

Relative attenuation

αrel

fN - 200,0 MHz ... fN - 10,0 MHz

40

48

— dB

fN - 10,0 MHz ... fN - 3,0 MHz

35

46

— dB

fN + 3,0 MHz ... fN + 10,0 MHz

35

46

— dB

fN + 10,0 MHz ... fN + 200,0 MHz

40

45

— dB

Temperature coefficient of frequency 1)

Turnover temperature

TCf

—

T0

—

– 0,036 —

25

—

ppm/K2

˚C

Matching circuit:

1) Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2)

2) Element values depend on PCB layout

Cp1 = 12pF 2)

Ls2 = 18nH 2)

Ls3 = 18nH 2)

Cp4 = 12pF 2)

3 Aug 02, 2002

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