3

Mar 31, 2006

SAW Components

M 3568 M

45,75 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

44,06 (44,00) MHz

12,3

13,8

15,3

dB

following data

Relative attenuation

α

rel

Picture carrier

45,81 (45,75) MHz

4,9

5,9

6,9

dB

Color carrier

42,23 (42,17) MHz

1,4

2,4

3,4

dB

Sound carrier

41,31 (41,25) MHz

34,0

43,0

—

dB

Adjacent picture carrier

39,81 (39,75) MHz

50,0

65,0

—

dB

Adjacent sound carrier

47,31 (47,25) MHz

42,0

52,0

—

dB

Lower sidelobe

35,06 ... 39,81 (35,00 ... 39,75) MHz

41,0

45,0

—

dB

Upper sidelobe

47,31 ... 55,06 (47,25 ... 55,00) MHz

36,0

42,0

—

dB

Reflected wave signal suppression

1,2

µs ... 6,0 µs after main pulse

42,0

52,0

—

dB

(test pulse 250 ns,

carrier frequency 44,06 MHz)

Feedthrough signal suppression

1,3

µs ... 1,2 µs before main pulse

50,0

56,0

—

dB

(test pulse 250 ns,

carrier frequency 44,06 MHz)

Group delay predistortion

∆τ

(reference frequency 45,75 MHz)

42,23 (42,17) MHz

—50—

ns

Group delay ripple (p-p)

43,06 ... 45,81 (43,00 ... 45,75) MHz

∆τ

—40

—

ns

Impedance at 44,06 MHz

Input:

=

||

—

1,1 ||19,1

—

k

Ω || pF

Output:

—

1,6 || 3,1

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K