X6874D datasheet(3/6 Pages) EPCOS

3 / 6 page

Nov 18, 2003

SAW Components

X 6874 D

36,125 MHz

Bandpass Filter

Data Sheet

Characteristics

Reference temperature:

TA = 25 ˚C

Terminating source impedance:

ZS = 50 Ω

Terminating load impedance:

ZL = 2 kΩ || 3 pF

min.

typ.

max.

Center frequency

36,07

36,125

36,18 MHz

(center between 10 dB points)

Insertion attenuation

Reference level for the

36,13 MHz

20,2

21,7

23,2

following data

Pass bandwidth

rel < 1dB

B1dB

—

7,5

—

MHz

rel < 3dB

B3dB

—

8,0

—

MHz

rel < 30dB

B30dB

—

9,5

—

MHz

Relative attenuation

rel

32,32 MHz

—

1,2

—

39,93 MHz

0,4

1,4

2,4

32,13 MHz

2,0

3,2

4,4

40,13 MHz

2,0

3,2

4,4

31,25 MHz

34,0

47,0

—

47,25 MHz

42,0

55,0

—

Lower sidelobe

25,00

... 29,50 MHz

38,0

45,0

—

29,50

... 31,25 MHz

34,0

41,0

—

Upper sidelobe

41,00

... 44,00 MHz

33,0

40,0

—

44,00

... 50,00 MHz

38,0

47,0

—

Reflected wave signal suppression

1,1

µs ... 6,0 µs after main pulse

42,0

52,0

—

(test pulse 250 ns,

carrier frequency 36,13 MHz)

Feedthrough signal suppression

1,3

µs ... 1,2 µs before main pulse

50,0

56,0

—

(test pulse 250 ns,

carrier frequency 36,13 MHz)

Group delay ripple (p-p)

∆τ

32,13

... 40,13 MHz

—40

—

Impedance at 36,13 MHz

Input:

ZIN

RIN

CIN

—

3,6 ||13,0

—

Ω || pF

Output:

ZOUT = ROUT || COUT

—

2,9 || 3,9

—k

Ω || pF

Temperature coefficient of frequency

TCf

—

–72

—

ppm/K

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