3

Mar 31, 2006

SAW Components

K 3350 K

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

13,0

14,5

16,0

dB

following data

Relative attenuation

α

rel

Picture carrier

38,90 MHz

5,2

6,2

7,2

dB

Color carrier

34,47 MHz

0,4

1,4

2,4

dB

Sound carrier

33,40 MHz

34,0

43,0

—

dB

Adjacent picture carrier

30,90 MHz

45,0

53,0

—

dB

31,90 MHz

47,0

57,0

—

dB

31,40 MHz

—

60,0

32,40 MHz

47,0

55,0

40,15 MHz

43,0

59,0

Adjacent sound carrier

40,40 MHz

45,0

56,0

—

dB

41,40 MHz

43,0

55,0

—

dB

Lower sidelobe

25,00

... 31,90 MHz

39,0

44,0

—

dB

Upper sidelobe

40,40

... 45,00 MHz

34,0

40,0

—

dB

Reflected wave signal suppression

1,3

µs ... 6,0 µs after main pulse

42,0

52,0

—

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 frequency 38,90 MHz)

36,90 MHz

—

–90

—

ns

34,47 MHz

—30

—

ns

Impedance at 37,40 MHz

Input:

=

||

—

1,1||24,8

—

k

Ω || pF

Output:

—

1,6 || 4,1

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K