3

July 17, 2006

X 7550 D

44.00 MHz

SAW Components

SAW bandpass Filter

Data sheet

Please read

cautions and warnings and

important notes at the end of this document.

Characteristics

Reference temperature:

Terminating source impedance:

Terminating load impedance:

min.

typ.

@ 25 ˚C

max.

Insertion attenuation

α

Reference level for

44.06(44.00) MHz

5.0

7.0

9.0

dB

the following data

Amplitude ripple (p-p)

∆α

41.66 ... 46.46

(41.60 ... 46.40) MHz

—

1.5

—

dB

Pass bandwidth

α

—

5.7

—

MHz

Relative attenuation

α

rel

39.81 (39.75) MHz

32.0

41.0

—

dB

41.26 (41.20) MHz

—

2.1

—

dB

46.86 (46.80) MHz

—

0.4

—

dB

47.31 (47.25) MHz

20.0

27.0

—

dB

Lower sidelobe

35.06 ... 40.41

(35.00 ... 40.35) MHz

32.0

38.0

—

dB

Upper sidelobe

47.71 ... 55.06

(47.65 ... 55.00) MHz

27.0

33.0

—

dB

Reflected wave signal suppression

1.3

µs ... 6.0 µs after main pulse

24.0

34.0

—

dB

(test pulse 250 ns,

carrier frequency 44.06 MHz)

Group delay ripple (p-p)

∆t

41.66 ... 46.46

(41.60 ... 46.40) MHz

—

190

—

ns

Impedance at 44.06 MHz

Input:

||

—

1.0 || 21.7

—

k

Ω || pF

—

8.0 || 3.6

—k

Ω || pF

Temperature coefficient of frequency

—

–72

—

ppm/K