B1708 datasheet(6/10 Pages) EPCOS

6 / 10 page

May 16, 2006

B1708

72.54 MHz

Please read

cautions and warnings and

important notes at the end of this document.

SAW Components

SAW IF filter

Data sheet

Characteristics

Temperature range for specification:

= –40 ˚C to +85 ˚C

Terminating source impedance:

ZS =50 Ω (single ended) and matching network

Terminating load impedance:

ZL = 50 Ω (single ended) and matching network

min.

typ.

@ 25 ˚C

max.

Nominal frequency

—

72.54

—

MHz

Minimum insertion attenuation1)

1) Including losses in the matching network

min

—

12.9

14.4

Amplitude ripple (p-p)

∆α

fN ± 1.85 MHz

—

1.2

1.5

Pass bandwidth

rel ≤ 1.5 dB

B1.5dB

—

4.0

—

MHz

rel ≤ 3 dB

B3dB

—

4.4

—

MHz

rel ≤ 15 dB

B15dB

—

5.8

6.0

MHz

rel ≤ 30 dB

B30dB

—

6.7

7.0

MHz

Mean attenuation (relative to

min)

rel

Upper sidelobe 86.47 ...

91.53 MHz

48.0

52.0

—

Relative attenuation (relative to

min)

rel

Lower sidelobe 50.00 ...

65.00 MHz

34.0

38.0

—

65.00 ...

66.48 MHz

36.0

42.0

—

66.48 ...

68.08 MHz

34.0

38.0

—

Upper sidelobe 77.30 ...

78.60 MHz

28.0

32.0

—

78.60 ...

86.47 MHz

34.0

39.0

—

86.47 ...

91.53 MHz

42.0

46.0

—

91.53 ...

95.21 MHz

44.0

48.0

—

95.21 ...

100.00 MHz

48.0

53.0

—

Group delay ripple (p–p)

∆τ

Aperture 50 kHz

fN ± 1.85 MHz

—

190

—

Temperature coefficient of frequency

TCf

—

–18

—

ppm/K

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