3

Sep 01, 2003

SAW Components

K 3565 M

38,90 MHz

IF Filter for Quasi/Split Sound Applications

Data Sheet

Characteristics of picture channel

Reference temperature:

Terminating source impedance:

Terminating load impedance:

min.

typ.

max.

Insertion attenuation

α

Reference level for the

37,40 MHz

12,9

14,4

15,9

dB

following data

Relative attenuation

α

rel

Picture carrier

38,90 MHz

4,8

5,8

6,8

dB

Color carrier

34,47 MHz

0,5

1,5

2,5

dB

Sound carrier

32,40 MHz

35,0

39,0

—

dB

33,40 MHz

35,0

51,0

—

dB

Adjacent picture carrier

30,90 MHz

45,0

59,0

—

dB

31,90 MHz

45,0

59,0

—

dB

Adjacent sound carrier

40,40 MHz

45,0

61,0

—

dB

41,40 MHz

45,0

63,0

—

dB

Lower sidelobe

25,00 ... 30,90 MHz

39,0

46,0

—

dB

Upper sidelobe

41,40 ... 45,00 MHz

37,0

43,0

—

dB

Reflected wave signal suppression

1,4

µs ... 6,0 µs after main pulse

42,0

51,0

—

dB

(test pulse 250 ns,

carrier frequency 37,40 MHz)

Feedthrough signal suppression

1,2

µs ... 1,1 µs before main pulse

50,0

56,0

—

dB

(test pulse 250 ns,

carrier frequency 37,40 MHz)

Group delay predistortion

∆τ

(reference frequeny 38,90 MHz)

35,90 MHz

—

–60

—

ns

34,47 MHz

—40

—

ns

Impedance at 37,40 MHz

Input:

=

||

—

1,2 ||24,2

—

k

Ω || pF

Output:

—

2,0 || 4,0

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K