3

July 24, 2008

B3780

433.92 MHz

SAW Components

SAW filter

Data sheet

Please read

cautions and warnings and

important notes at the end of this document.

Characteristics

Temperature range for specification:

T

= –40 ˚C to +105 ˚C

Terminating source impedance:

Terminating load impedance:

min.

typ.

@ 25 ˚C

max.

Center frequency

—

433.92

—

MHz

Minimum insertion attenuation

α

min

incl. loss in matching elements

—

2.0

2.8

dB

excl. loss in matching elements

—

1.6

2.4

dB

Pass band (relative to

α

433.645 ...

434.165MHz

—

0.9

3.0

dB

433.645 ...

434.195MHz

—

0.9

dB

Filter bandwidth

α

780

850

920

kHz

Relative attenuation (relative to

α

α

rel

10.00 ...

414.00 MHz

48

53

—

dB

414.00 ...

425.00 MHz

42

47

—

dB

425.00 ...

431.50 MHz

28

33

—

dB

431.50 ...

433.00 MHz

18

21

—

dB

434.92 ...

443.00 MHz

14

18

—

dB

443.00 ...

530.00 MHz

36

41

—

dB

530.00 ...

670.00 MHz

55

60

—

dB

670.00 ...

830.00 MHz

45

50

—

dB

830.00 ... 1000.00 MHz

60

65

—

dB

1000.00 ... 2500.00 MHz

43

48

—

dB

2)

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:

—

330 || 1.9

—

Ω || pF

—

330 || 1.9

—

Ω || pF

Maximum ratings

Operable temperature range T

–45/+125 ˚C

Storage temperature range

–45/+125 ˚C

DC voltage

6

V

Source power

10

dBm

source impedance 50

Ω