J1951M datasheet(3/6 Pages) EPCOS

No. de pieza	J1951M

Descripción Electrónicos	IF Filter for Intercarrier Applications

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Mar 31, 2006

SAW Components

J 1951 M

39,50 MHz

IF Filter for Intercarrier Applications

Data Sheet

Characteristics

Reference temperature:

TA = 25 ˚C

Terminating source impedance:

ZS = 50 Ω

Terminating load impedance:

ZL = 2 kΩ || 3 pF

min.

typ.

max.

Insertion attenuation

α

Reference level for the

38,00 MHz

13,5

15,0

16,5

dB

following data

Relative attenuation

α

rel

Picture carrier

39,50 MHz

4,8

5,8

6,8

dB

Color carrier

35,07 MHz

2,8

3,8

4,8

dB

Sound carrier

33,50 MHz

21,1

22,1

23,1

dB

Adjacent picture carrier

31,50 MHz

48,0

60,0

—

dB

31,00 MHz

45,0

52,0

—

dB

32,00 MHz

45,0

52,0

—

dB

40,95 MHz

36,0

42,0

—

dB

Adjacent sound carrier

41,50 MHz

44,0

54,0

—

dB

Lower sidelobe

25,00

... 31,50 MHz

44,0

50,0

—

dB

Upper sidelobe

41,50

... 45,00 MHz

36,0

40,0

—

dB

Reflected wave signal suppression

1,0

µs ... 6,0 µs after main pulse

44,0

52,0

—

dB

(test pulse 250 ns,

carrier frequency 38,00 MHz)

Feedthrough signal suppression

0,9

µs ... 0,8 µs before main pulse

50,0

56,0

—

dB

(test pulse 250 ns,

carrier frequency 38,00 MHz)

Group delay ripple (p-p)

∆τ

—40

—

ns

Impedance at 38,00 MHz

Input:

ZIN

=

RIN

||

CIN

—

2,0 ||10,0

—

k

Ω || pF

Output:

ZOUT = ROUT || COUT

—

2,2 || 4,5

—k

Ω || pF

Temperature coefficient of frequency

TCf

—

–72

—

ppm/K

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