B3865 Просмотр технического описания (PDF) - EPCOS AG

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B3865

SAW Components Low-Loss Filter

EPCOS AG 

SAW Components

Low-Loss Filter

Data Sheet

Characteristics

Operating temperature range:

Terminating source impedance:

Terminating load impedance:

Nominal frequency

Minimum insertion attenuation

(including matching network)

B3865

240,0 MHz

T = -10 .. 85˚C

ZS=50 Ω and matching network

ZS=50 Ω and matching network

min.

typ.

fN

—

240,0

αmin

12,0

14,0

max.

— MHz

16,0 dB

Passband width

αrel ≤ 1 dB

B1dB

3,6

Amplitude ripple (p-p)

∆α

fN ± 1,8 MHz

—

Absolute group delay (at fN)

τ

—

Group delay ripple (p-p)

∆τ

fN ± 1,7 MHz

—

fN ± 1,8 MHz

—

Deviation of linear phase (p-p)

∆ϕ

fN ± 1,8 MHz

—

Relative attenuation (relative to αmin)

αrel

fN ± 2,13 MHz ... fN ± 2,5 MHz

5

fN ± 2,5 MHz ... fN ± 2,93 MHz

13

fN ± 2,93 MHz ... fN ± 3,3 MHz

24

fN − 5,0 MHz ... fN − 3,3 MHz

35

fN − 70 MHz ... fN − 5,0 MHz

40

fN + 3,3 MHz ... fN + 3,7 MHz

32

fN + 3,7 MHz ... fN + 5,0 MHz

35

fN + 5,0 MHz ... fN + 5,4 MHz

38

fN + 5,4 MHz ... fN + 70 MHz

40

Input and output return loss

12

4,0

0,8

1,07

150

150

4

8

16

27

38

43

35

38

40

43

15

— MHz

1,1 dB

2,5 µs

200 ns

300 ns

6˚

— dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

Temperature coefficient of frequency 1)

Turnover temperature

TCf

—

– 0,036

T0

—

40

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

— ppm/K2

— ˚C

3 Oct 31, 2002

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