4

Jan 05, 2005

SAW Components

X 7256 D

57,00 MHz

Bandpass Filter

Data Sheet

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

Reference temperature:

Terminating source impedance:

Terminating load impedance:

min.

typ.

max.

Insertion attenuation

α

Reference level for the

57,08 (57,00) MHz

10,7,

12,2

13,7

dB

following data

Pass bandwidth

α

—

4,1

—

MHz

α

—

5,6

—

MHz

Relative attenuation

α

rel

55,18 (55,10) MHz

—

0,6

—

dB

58,58 (58,50) MHz

—

0,4

—

dB

Adjacent picture carrier

53,83 (53,75) MHz

—

45,0

—

dB

Adjacent sound carrier

59,33 (59,25) MHz

—

11,0

—

dB

Lower sidelobe

45,08 ... 51,58 (45,00 ... 51,50) MHz

39,0

47,0

—

dB

51,58 ... 53,83 (51,50 ... 53,75) MHz

32,0

40,0

—

dB

Upper sidelobe

60,03 ... 62,58 (59,95 ... 62,50) MHz

30,0

38,0

—

dB

62,58 ... 65,08 (62,50 ... 65,00) MHz

37,0

43,0

—

dB

Reflected wave signal suppression

1,2

µs ... 6,0 µs after main pulse

42,0

53,0

—

dB

(test pulse 250 ns, carrier frequency 57,08 MHz)

Feedthrough signal suppression

1,3

µs ... 1,2 µs before main pulse

—

50,0

—

dB

(test pulse 250 ns, carrier frequency 57,08 MHz)

Group delay ripple (p-p)

∆τ

55,68 ... 58,08 (55,60 ... 58,00) MHz

—

50

—

ns

Impedance at 57,08 MHz

Input:

=

||

—

0,4||24,0

—

k

Ω || pF

Output:

—

0,6|| 6,0

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K