3

March 03, 2008

B3790

433.92 MHz

SAW Components

SAW RF filter

Data sheet

Please read

cautions and warnings and

important notes at the end of this document.

Characteristics

Temperature range for specification:

T

= –30 ˚C to +80 ˚C

Terminating source impedance:

Terminating load impedance:

min.

typ.

@ 25 ˚C

max.

Center frequency

—

433.92

—

MHz

(center frequency between 3dB pionts)

Minimum insertion attenuation

α

min

(including losses in matching network)

433.86 ...

433.98 MHz

—

3.6

4.3

dB

Pass band (relative to

αmin)

433.86 ...

433.98 MHz

—

0.5

1.5

dB

Relative attenuation (relative to

αmin)

α

rel

10.00 ...

250.00 MHz

60

65

—

dB

250.00 ...

330.00 MHz

53

58

—

dB

330.00 ...

430.00 MHz

55

60

—

dB

430.00 ...

433.32 MHz

32

48

—

dB

434.52 ...

437.00 MHz

29

34

—

dB

437.00 ...

530.00 MHz

55

60

—

dB

530.00 ... 1000.00 MHz

60

65

—

dB

1)

Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to source- and to load

impedance (here 50 Ohm). After removal of the SAW filter the input impedance of the input and output match-

ing network is calculated. The conjugate complex value of these characteristic impedances are the input and

output impedances for flat passband. For more details we refer to EPCOS application note #4.

Input:

—

510 || 1.0

—

Ω || pF

—

510 || 1.0

—

Ω || pF