3

Jan 12, 2005

SAW Components

X 7257 M

36,125 MHz

Bandpass Filter

Data Sheet

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

Reference temperature:

Terminating source impedance:

Terminating load impedance:

min.

typ.

max.

Insertion attenuation

α

Reference level for the

36,125 MHz

20,1

21,6

23,1

dB

following data

Pass bandwidth

α

—

8,0

—

MHz

α

—

9,5

—

MHz

Relative attenuation

α

rel

32,32 MHz

– 0,2

1,0

2,2

dB

33,93 MHz

– 0,1

1,1

2,3

dB

32,13 MHz

—

2,8

—

dB

40,13 MHz

—

3,2

—

dB

Lower sidelobe

25,00 ... 30,90 MHz

34,0

42,0

—

dB

Upper sidelobe

42,00 ... 45,00 MHz

33,0

39,0

—

dB

Reflected wave signal suppression

1,4

µs ... 6,0 µs after main pulse

40,0

49,0

—

dB

(test pulse 250 ns, carrier frequency 36,125 MHz)

Feedthrough signal suppression

1,3

µs ... 1,2 µs before main pulse

—

50,0

—

dB

(test pulse 250 ns, carrier frequency 36,125 MHz)

Group delay ripple (p-p)

∆τ

32,32 ... 39,93 MHz

—

60

—

ns

Impedance at 36,125 MHz

Input:

=

||

—

1,6 ||16,0

—

k

Ω || pF

Output:

—

2,4 || 4,3

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K