B3872 datasheet(3/5 Pages) EPCOS

номер детали	B3872

подробное описание детали	SAW Components Vestigial Sideband Filter 38,90 MHz

PDF	5 Pages

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3 / 5 page

Nov 12, 2002

SAW Components

B3872

38,90 MHz

Vestigial Sideband Filter

Preliminary Data Sheet

Characteristics

Operating temperature:

T =25 ˚C

Terminating source impedance:

ZS =50 Ω

Terminating load impedance:

ZL =50 Ω

Group delay aperture

80 kHz

min.

typ.

max.

Nominal frequency

—

38,90

—

MHz

Insertion attenuation at

33,4

34,5

36,4

Relative attenuation (relative to

rel

31,90 MHz

34,0

48,0

—

33,15 MHz

-0,9

0,1

1,1

33,40 MHz

-0,8

0,0

1,2

39,65 MHz

2,3

3,3

4,3

40,15 MHz

22,0

25,0

—

40,40 MHz

34,0

40,0

—

44,40 MHz

38,0

55,0

—

25,00 … 31,90 MHz

32,0

40,0

—

40,40 … 45,00 MHz

30,0

37,0

—

Reflected wave signal suppression

1,50

µs … 6,00 µs after main pulse

37,0

45,0

—

1,60

µs … 1,50 µs before main pulse

50,0

65,0

—

Group delay at

—

1,6

—

µs

Group delay ripple (p-p)

∆τ

33,40 … 39,65 MHz

—

150

Temperature coefficient of frequency

TCf

—

– 87

—

ppm/K

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