X7550D データシートの表示（PDF） - EPCOS AG

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X7550D

SAW bandpass Filter

EPCOS AG 

SAW Components

SAW bandpass Filter

Data sheet

Characteristics

Reference temperature:

Terminating source impedance:

Terminating load impedance:

X 7550 D

44.00 MHz

TA = 25 (45) ˚C

ZS = 50 Ω and matching network

ZL = 2 kΩ || 3 pF and matching network

Insertion attenuation

α

Reference level for 44.06(44.00) MHz

the following data

min.

5.0

typ.

@ 25 ˚C

7.0

max.

9.0 dB

Amplitude ripple (p-p)

∆α

41.66 ... 46.46 (41.60 ... 46.40) MHz

—

1.5

—

dB

Pass bandwidth

αrel < 3 dB

B3dB

—

Relative attenuation

αrel

39.81 (39.75) MHz

32.0

41.26 (41.20) MHz

—

46.86 (46.80) MHz

—

47.31 (47.25) MHz

20.0

Lower sidelobe

35.06 ... 40.41 (35.00 ... 40.35) MHz

32.0

Upper sidelobe

47.71 ... 55.06 (47.65 ... 55.00) MHz

27.0

5.7

41.0

2.1

0.4

27.0

38.0

33.0

—

MHz

—

dB

—

dB

—

dB

—

dB

—

dB

—

dB

Reflected wave signal suppression

1.3 µs ... 6.0 µs after main pulse

(test pulse 250 ns,

carrier frequency 44.06 MHz)

24.0

34.0

—

dB

Group delay ripple (p-p)

∆t

41.66 ... 46.46 (41.60 ... 46.40) MHz

—

190

—

ns

Impedance at 44.06 MHz

Input: ZIN = RIN ||CIN

Output: ZOUT = ROUT ||COUT

Temperature coefficient of frequency TCf

—

1.0 || 21.7 —

kΩ || pF

—

8.0 || 3.6 —

kΩ || pF

—

–72

—

ppm/K

Please read cautions and warnings and

important notes at the end of this document.

3 July 17, 2006

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