B39431B3733H110【PDF 3/10 页】FILTER SAW 434.42MHZ SMD

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SAW Components

SAW filter

Data sheet

Characteristics

Operating temperature range:

Terminating source impedance:

Terminating load impedance:

T = –45 ?C to +95 ?C

Z S = 50 ? and matching network

Z L = 50 ? and matching network

B3733

434.42 MHz

min.

typ.

@ 25 ?C

max.

Center frequency

f C

—

434.42

—

MHz

Minimum insertion attenuation

α min

incl. loss in matching elements (Q L = 47)

excl. loss in matching elements

—

—

2.1

1.5

3.0

2.2

dB

dB

Pass band (relative to α min )

434.27 ... 434.57 MHz

434.24 ... 434.60 MHz

434.20 ... 434.64 MHz

—

—

—

0.6

0.8

1.2

2.0

3.0

6.0

dB

dB

dB

Relative attenuation (relative to α min )

α rel

10.00 ... 414.00 MHz

414.00 ... 426.50 MHz

426.50 ... 431.00 MHz

431.00 ... 432.22 MHz

432.22 ... 432.47 MHz

432.47 ... 432.57 MHz

432.57 ... 432.62 MHz

432.62 ... 433.60 MHz

435.42 ... 444.50 MHz

444.50 ... 500.00 MHz

500.00 ... 810.00 MHz

810.00 ... 1500.00 MHz

1500.00 ... 2500.00 MHz

55

48

24

30

40

30

25

15

15

40

50

60

53

60

53

28

35

45

52

52

18

20

45

55

65

58

—

—

—

—

—

—

—

—

—

—

—

—

—

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

Impedance for pass band matching 1)

Input: Z IN = R IN || C IN

Output: Z OUT = R OUT || C OUT

—

—

350 || 2.2

350 || 2.2

—

—

? || pF

? || pF

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.

Please read cautions and warnings and

important notes at the end of this document.

3

December 19, 2012

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