3

Jan 27, 2003

SAW Components

K 7253 M

38,00 MHz

IF Filter for Intercarrier / Multistandard Applications

Data Sheet

Characteristics in B/G, D/K mode (switching pin 2 connected to ground)

Reference temperature:

25 ˚C

Terminating source impedance:

Terminating load impedance:

min.

typ.

max.

Insertion attenuation

α

Reference level for the

36,50 MHz

15,9

17,4

18,9

dB

following data

Relative attenuation

α

rel

Picture carrier

38,00 MHz

4,7

5,7

6,7

dB

Color carrier

33,57 MHz

0,2

1,2

2,2

dB

Sound carrier

31,50 MHz

18,5

20,0

21,5

dB

32,50 MHz

18,1

19,6

—

dB

Adjacent picture carrier

30,00 MHz

42,0

50,0

—

dB

31,00 MHz

40,0

55,0

—

dB

Adjacent sound carrier

39,50 MHz

40,0

46,0

—

dB

40,50 MHz

37,0

42,0

—

dB

Lower sidelobe

25,00 ..... 30,00 MHz

38,0

44,0

—

dB

Upper sidelobe

39,50 ..... 45,00 MHz

33,0

39,0

—

dB

Reflected wave signal suppression

1,3

µs ... 6,0 µs after main pulse

42,0

51,0

—

dB

(test pulse 250 ns,

carrier frequency 36,50 MHz)

Feedthrough signal suppression

1,2

µs ... 1,1 µs before main pulse

50,0

56,0

—

dB

(test pulse 250 ns,

carrier frequency 36,50 MHz)

Group delay predistortion

∆τ

(reference frequency 38,00 MHz)

33,57 MHz

—

–40

—

ns

Impedance at 36,50 MHz

Input:

=

||

—

1,2 ||16,5

—

k

Ω || pF

Output:

—

2,5 || 3,9

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K