426 MHz SAW Filter

4.9 MHz Bandwidth

Part Number SF0426BA12365S

Spectrum Microwave

324 Clark Street, Worcester, MA 01606, USA

• Phone 1-508-852-5400 • Fax 1-508-852-8456

www.SpectrumMicrowave.com

DSSF0426BA12365S Rev A

5-Mar-2010

ECN 36650

Page 2 of 3

SPECIFICATION

Parameter

Min

Typ

Max

Units

Center Frequency (Fc)

1

-

426.00

-

MHz

Minimum Insertion Loss

17.3

18.3

19.3

dB

Lower 1 dB band Edge Point

-

423.36

423.56

MHz

Upper 1 dB Band Edge Point

428.44

428.57

-

MHz

Lower 3 dB Band Edge Point

-

423.13

423.31

MHz

Upper 3 dB Band Edge Point

428.69

428.78

-

MHz

Lower 40 dB Band edge Point

422.13

422.34

-

MHz

Upper 40 dB Band Edge Point

-

429.84

429.92

MHz

Rejection (417.5 to 421.5 MHz)

44

50

-

dB

Rejection (430.7 to 436 MHz)

44

46

-

dB

Rejection (100 to 417.5 MHz)

48

60

-

dB

Rejection (436 to 500 MHz)

48

55

-

dB

Passband Ripple (423.56 to 428.44 MHz)

-

0.65

1

dB

Phase Ripple (423.56 to 428.44 MHz)

-

5

7.5

deg p-p

Group Delay Variation (423.56 to 428.44 MHz)

4

-

100

120

ns p-p

Triple Transit Suppression

-

40

dB

Source and Load Impedance

-

50

Ω

Ambient Temperature

-

25

-

°C

Notes:

1. Average of the lower and upper 3 dB band edge frequencies.

2. Specifications apply over operating temperature with filter matched to 50 ohms.

3. All dB values are measured relative to the minimum insertion loss.

4. A smoothing aperture of 0.125 MHz is to be used for this measurement.

MAXIMUM RATINGS

Parameter

Min

Max

Units

Storage Temperature Range

-40

85

˚C

Operating Temperature Range

10

70

˚C

Input Power Level

-

13

dBm

MATCHING CIRCUIT

Typical component values:

Ls1 = 18 nH

Ls2 = 15 nH

Cp1 = 19 pF

Cp2 = 22 pF

Notes:

1) Recommend 2% tolerance matching components. Typical inductor Q=40.

2) Tuning values shown are for reference only. Optimum values may change depending upon board layout.

Input

50

Ω

Single ended

Output

50

Ω

Single ended