B39431B3743H110【PDF 3/10 页】FILTER SAW 433.92MHZ REMOTE SMD

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SAW Components

SAW filter

Data sheet

Characteristics

Temperature range for specification:

Terminating source impedance:

Terminating load impedance:

T = –45 ?C to +95 ?C

Z S = 50 ? and matching network

Z L = 50 ? and matching network

B3743

433.92 MHz

min.

typ.

@ 25 ?C

max.

Center frequency

f C

—

433.92

—

MHz

Minimum insertion attenuation

α min

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

excl. loss in matching elements

—

—

1.9

1.5

2.6

2.2

dB

dB

Pass band (relative to α min )

433.77 ... 434.07 MHz

433.75 ... 434.09 MHz

—

—

0.5

0.8

2.0

3.0

dB

dB

Relative attenuation (relative to α min )

α rel

10.00 ... 380.00 MHz

380.00 ... 414.00 MHz

414.00 ... 427.00 MHz

427.00 ... 431.52 MHz

431.52 ... 432.90 MHz

432.90 ... 433.10 MHz

435.10 ... 444.50 MHz

444.50 ... 450.00 MHz

450.00 ... 810.00 MHz

810.00 ... 1500.00 MHz

1500.00 ... 2500.00 MHz

55

50

46

24

15

13

25

40

47

60

50

60

56

52

29

20

20

30

45

52

65

55

—

—

—

—

—

—

—

—

—

—

—

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

Impedance for pass band matching 1)

Input: Z IN

= R IN

|| C IN

—

350 || 2.2

—

? || pF

Output: Z OUT = R OUT || C OUT

—

350 || 2.2

—

? || 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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