M1871M 查看數據表（PDF） - EPCOS AG

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M1871M

IF Filter for Intercarrier Applications 45,75 MHz

EPCOS AG 

SAW Components

IF Filter for Intercarrier Applications

Data Sheet

Characteristics

Reference temperature:

Terminating source impedance:

Terminating load impedance:

TA = 25 (45) ˚C

ZS = 50 Ω

ZL = 2 kΩ || 3 pF

Insertion attenuation

Reference level for the

following data

α

44,06 (44,00) MHz

min.

11,2

Relative attenuation

αrel

Picture carrier

45,81 (45,75) MHz

5,0

Color carrier

42,23 (42,17) MHz

3,3

Sound carrier

41,31 (41,25) MHz

15,6

Adjacent picture carrier

39,81 (39,75) MHz

48,0

Adjacent sound carrier

47,31 (47,25) MHz

40,0

Lower sidelobe

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

36,0

Upper sidelobe

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

35,0

M 1871 M

45,75 MHz

typ.

12,7

max.

14,2 dB

6,0

7,0 dB

4,3

5,3 dB

17,1

18,6 dB

62,0

— dB

47,0

— dB

dB

42,0

— dB

dB

41,0

— dB

Reflected wave signal suppression

1,0 µs ... 6,0 µs after main pulse

(test pulse 250 ns,

carrier frequency 44,06 MHz)

42,0

52,0

— dB

Feedthrough signal suppression

0,9 µs ... 0,8 µs before main pulse

(test pulse 250 ns,

carrier frequency 44,06 MHz)

Group delay ripple (p-p)

∆τ

Impedance at 44,06 MHz

Input: ZIN = RIN || CIN

Output: ZOUT = ROUT || COUT

Temperature coefficient of frequency

TCf

50,0

56,0

— dB

—

50

— ns

—

1,6 || 8,4

— kΩ || pF

—

1,1 || 3,6

— kΩ || pF

—

–72

— ppm/K

3 Mar 31, 2006

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