X6893D datasheet(3/6 Pages) EPCOS

3 / 6 page

Apr 30, 2004

SAW Components

X 6893 D

44,00 MHz

Bandpass Filter

Data Sheet

Characteristics

Reference temperature:

TA = 25 (45) ˚C

Terminating source impedance:

ZS = 50 Ω

Terminating load impedance:

ZL = 2 kΩ || 3 pF

min.

typ.

max.

Center frequency

—

(44,00)

—

MHz

(center between 10 dB points)

Insertion attenuation

Reference level for the

44,06 (44,00) MHz

13,5

15,0

16,5

following data

Pass bandwith

rel ≤ 3dB

B3dB

—

6,2

—

MHz

rel ≤ 30 dB

B30dB

—

7,7

—

MHz

Relative attenuation

rel

40,96 (40,90) MHz

—

2,8

—

47,16 (47,10) MHz

—

3,3

—

Lower sidelobe

35,06 ... 38,96 (35,00 ... 38,90) MHz

38,0

45,0

—

38,96 ... 40,01 (38,90 ... 39,95) MHz

35,0

43,0

—

Upper sidelobe

48,11 ... 49,46 (48,05 ... 49,40) MHz

30,0

37,0

—

49,46 ... 55,06 (49,40 ... 55,00) MHz

38,0

45,0

—

Reflected wave signal suppression

1,2

µs ... 6,0 µs after main pulse

42,0

52,0

—

(test pulse 250 ns,

carrier frequency 44,06 MHz)

Feedthrough signal suppression

1,2

µs ... 1,1 µs before main pulse

50,0

56,0

—

(test pulse 250 ns,

carrier frequency 44,06 MHz)

Group delay ripple (p-p)

∆τ

Aperture 50 kHz

40,96 ... 47,16 (40,90 ... 47,10) MHz

—

Impedance at 44,06 MHz

Input:

ZIN

RIN

CIN

—

1,7 ||15,2

—

Ω || pF

Output:

ZOUT = ROUT || COUT

—

1,6 || 4,4

—k

Ω || pF

Temperature coefficient of frequency

TCf

—

–72

—

ppm/K

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