3

Nov 18, 2003

SAW Components

X6872D

36,125 MHz

Bandpass Filter

Data Sheet

Characteristics

Reference temperature:

Terminating source impedance:

Terminating load impedance:

min.

typ.

max.

Center frequency

—

36,125

—

MHz

(center between 10 dB points)

Insertion attenuation

α

Reference level for the

36,13 MHz

18,5

20,0

21,5

dB

following data

Pass bandwith

α

—

6,9

—

MHz

α

—

8,5

—

MHz

Relative attenuation

α

rel

33,08 MHz

—

0,5

—

dB

39,17 MHz

—

0,6

—

dB

32,63 MHz

—

3,6

—

dB

39,63 MHz

—

3,8

—

dB

Lower sidelobe

25,00 ... 31,65 MHz

38,0

46,0

—

Upper sidelobe

40,65 ... 45,00 MHz

37,0

42,0

—

Reflected wave signal suppression

1,3

µs ... 6,0 µs after main pulse

42,0

52,0

—

dB

(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

—

dB

(test pulse 250 ns,

carrier frequency 36,13 MHz)

Group delay ripple (p-p)

∆τ

32,63 ...

39,63 MHz

—

40

—

ns

Impedance at 36,13 MHz

Input:

=

||

—

3,4 ||13,3

—

k

Ω || pF

Output:

—

2,2 || 4,3

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K