B1720 datasheet(3/7 Pages) EPCOS

3 / 7 page

February 19, 2010

B1720

115.18 MHz

SAW Components

SAW IF filter

Data sheet

Please read

cautions and warnings and

important notes at the end of this document.

Characteristics

Temperature range for specification:

= –40 ˚C to +85 ˚C

Terminating source impedance:

ZS = 200 Ω and matching network

Terminating load impedance:

ZL = 200 Ω and matching network

min.

typ.

@ 25 ˚C

max.

Nominal frequency

—

115.18

—

MHz

Minimum insertion attenuation1)

1) Including losses in the matching network

Inductor type TOKO LL1005FHL

min

—

14.2

15.7

Amplitude ripple (p-p)

∆α

108.9300 ... 110.7875 MHz

—

0.3

1.3

110.7875 ... 112.6450 MHz

—

0.2

1.2

112.6450 ... 115.1550 MHz

—

0.3

1.2

115.2050 ... 117.7150 MHz

—

0.2

1.2

117.7150 ... 119.5725 MHz

—

0.2

1.2

119.5725 ... 121.4300 MHz

—

0.5

1.3

Pass bandwidth

rel ≤ 1.5 dB

B1.5dB

—

13.3

—

MHz

rel ≤ 3dB

B3dB

—

14.0

—

MHz

Attenuation (relative to

min)

rel

Lower sidelobe

90.000

...

98.680

MHz

48.0

55.0

—

98.680

... 104.680

MHz

38.0

42.0

—

Upper sidelobe

124.180

... 131.180

MHz

30.0

35.0

—

131.180

... 140.000

MHz

42.0

48.0

—

Group delay ripple (p-p)

∆τ

108.9300 ... 110.7875 MHz

—

110.7875 ... 112.6450 MHz

—

112.6450 ... 115.1550 MHz

—

115.2050 ... 117.7150 MHz

—

117.7150 ... 119.5725 MHz

—

119.5725 ... 121.4300 MHz

—55

—

Temperature coefficient of frequency

TCf

—

–18

—

ppm/K

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