K3953M 데이터 시트보기 (PDF) - EPCOS AG

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K3953M

SAW Components IF Filter for Video Applications

EPCOS AG 

SAW Components

IF Filter for Video Applications

Data Sheet

Characteristics

Reference temperature:

Terminating source impedance:

Terminating load impedance:

K 3953 M

33,90 MHz and 38,90 MHz

TA = 25 ˚C

ZS = 50 Ω

ZL = 2 kΩ || 3 pF

Insertion attenuation

Reference level for the

following data

α

37,40 MHz

min.

12,0

typ.

max.

13,5

15,0 dB

Relative attenuation

Picture carrier

Color carrier

Sound carrier

Adjacent picture carrier

Adjacent sound carrier

Lower sidelobe

Upper sidelobe

25,00

40,40

αrel

38,90 MHz

33,90 MHz

34,47 MHz

33,40 MHz

32,90 MHz

32,40 MHz

30,90 MHz

31,90 MHz

40,15 MHz

40,40 MHz

41,40 MHz

40,90 MHz

... 31,90 MHz

... 45,00 MHz

5,0

6,0

6,3

7,5

—

1,3

20,0

24,0

—

54,0

—

63,0

48,0

62,0

48,0

59,0

36,0

40,0

48,0

59,0

46,0

60,0

46,0

59,0

45,0

52,0

38,0

44,0

7,0 dB

8,7 dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

— dB

Reflected wave signal suppression

1,2 µs ... 6,0 µs after main pulse

(test pulse 250 ns,

carrier frequency 37,40 MHz)

42,0

50,0

— dB

Feedthrough signal suppression

1,2 µs ... 1,1 µs before main pulse

(test pulse 250 ns,

carrier frequency 37,40 MHz)

50,0

56,0

— dB

Group delay ripple (p-p)

∆τ

Impedance at 37,40 MHz

Input: ZIN = RIN || CIN

Output: ZOUT = ROUT || COUT

Temperature coefficient of frequency

TCf

—

50

— ns

—

1,4 ||16,9 — kΩ || pF

—

1,6 || 4,7

— kΩ || pF

—

–72

— ppm/K

3 Mar 31, 2006

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