3

Dec 08, 2003

SAW Components

X 7251 D

36,17 MHz

Bandpass Filter

Data Sheet

Characteristics of channel 1 (switching pin 2 connected to ground)

Reference temperature:

Terminating source impedance:

Terminating load impedance:

min.

typ.

max.

Insertion attenuation

α

Reference level for the

36,17 MHz

19,5

21,0

22,5

dB

following data

Pass bandwidth

α

7,4

7,7

8,0

MHz

α

7,7

8,0

8,3

MHz

α

8,6

8,9

9,2

MHz

α

8,8

9,4

10,0

MHz

Relative attenuation

α

rel

Lower sidelobe

25,00

... 31,15 MHz

35,0

41,0

dB

Upper sidelobe

41,15

... 42,00 MHz

31,0

37,0

dB

42,00

... 45,00 MHz

37,0

44,0

dB

Reflected wave signal suppression

1,1

µs ... 6,0 µs after main pulse

42,0

50,0

—

dB

(test pulse 250 ns,

carrier frequency 36,17 MHz)

Feedthrough signal suppression

1,3

µs ... 1,2 µs before main pulse

—

50,0

—

dB

(test pulse 250 ns,

carrier frequency 36,17 MHz)

Group delay ripple (p-p)

∆τ

32,25

... 40,05 MHz

—

50

—

ns

Impedance at 36,17 MHz

Input:

=

||

—

1,7 ||17,3

—

k

Ω || pF

Output:

—

2,4 || 4,3

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K