250 MHz SAW Filter

80 MHz Bandwidth

Part Number: SF0250BA02425S

Spectrum Microwave

400 Nickerson Road, Marlborough, MA 01752, USA

• Phone 1-508-251-6400 • Fax 1-508-251-6401

www.SpectrumMicrowave.com

DSSF0250BA02425S Rev A 19-Mar-2010

ECN 36650

Page 2 of 3

SPECIFICATION

Parameter

2

Min

Typ

Max

Units

Center Frequency (Fc)

1

-

250

-

MHz

Minimum Insertion Loss

-

19.4

20.5

dB

1 dB Bandwidth

80.0

84.0

-

MHz

Lower 33 dB Band Edge

2

192.5

195.8

-

MHz

Upper 33 dB Band Edge

2

-

304.6

307.5

MHz

Rejection (0.3 to 30 MHz)

30

40

-

dB

Rejection (30 MHz to 150 MHz)

40

48

-

dB

Rejection (150 to 186 MHz)

38

40

-

dB

Rejection (186 to 192.5 MHz)

33

35

-

dB

Rejection (307.5 to 316 MHz)

33

35

-

dB

Rejection (316 to 320 MHz)

38

41

-

dB

Rejection (320 to 500 MHz)

40

45

-

dB

Passband Ripple (210 to 290 MHz)

3

-

0.7

1.0

dB p-p

Passband Ripple (209 to 291 MHz)

3

-

0.8

1.5

dB p-p

Phase Linearity (210 to 290 MHz)

3

-

4.5

8

deg p-p

Group Delay Deviation (210 to 290 MHz)

3

-

25

50

ns p-p

Source and Load Impedance

-

50

Ω

Ambient Temperature (Tref)

-

25

-

° C

Notes:

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

2. All dB levels are relative to the insertion loss.

3. These specifications apply over the full operating temperature range.

MAXIMUM RATINGS

Parameter

Min

Typ

Max

Units

Storage Temperature Range

-40

25

85

˚C

Operating Temperature Range (T)

-20

25

85

˚C

Temperature Coefficient of Frequency (Tc)

4

-

-74

-

ppm/˚C

Input Power Level

-

10

13

dBm

MATCHING CIRCUIT

Typical component values:

Notes:

1. Recommend use of 2% tolerance matching components. Inductor Q=45.

2. Component values are for reference only and may change depending on board layout.

Ls1

=

47

nH

Ls2

=

68

nH