140 MHz SAW Filter

4.4 MHz Bandwidth

Part Number SF0140BA02433T

Spectrum Microwave

400 Nickerson Road, Marlborough, MA 01752, USA

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

www.SpectrumMicrowave.com

DSSF0140BA02433T Rev B

22-Feb-2010

ECN 36650

Page 2 of 3

SPECIFICATION

Parameter

Min

Typ

Max

Units

1

139.92

140.00

140.08

MHz

Minimum Insertion Loss

-

19.9

21.5

dB

1.5 dB Bandwidth

2

4.40

4.42

-

MHz

25 dB Bandwidth

2

-

5.39

5.44

MHz

30 dB Bandwidth

2

-

5.49

5.70

MHz

40 dB Bandwidth

2

-

5.86

6.10

MHz

Passband Variation (Fc +/- 2.0 MHz)

-

0.6

1.0

dB p-p

-

3

6

deg p-p

Group Delay Variation (Fc +/- 2.2 MHz)

3

-

80

100

ns p-p

Absolute Delay

-

2.26

2.30

us

Input VSWR (Fc +/- 2.2 MHz)

-

2.0

2.3

:1

Output VSWR (Fc +/- 2.2 MHz)

-

2.0

2.3

:1

Ultimate Rejection (Fc+/-3.5 to Fc+/- 60 MHz)

40

45

-

dB

Substrate Material

Ambient Temperature (Tref)

-

25

-

˚C

Notes:

1. Defined as the average of the lower and upper 3 dB frequencies.

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

3. A smoothing aperture of 0.125 MHz may be used for this measurement.

MAXIMUM RATINGS

Parameter

Min

Typ

Max

Units

Storage Temperature Range

-40

25

85

˚C

Material Coefficient of Frequency (Tc)

4

-

-23

-

ppm/˚C

Input Power Level

-

0

10

dBm

MATCHING CIRCUIT

Typical component values:

(Minimum inductor Q = 45)

Notes:

1. Recommend the use of

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

Ls1

=

15

nH

Ls2 =

18

nH

Cp1 =

68

pF

Cp2 =

68

pF

Rp1 =

22

Ω

Rp2 =

22

Ω

Input

50

Ω

Single-ended

Output

50

Ω

Single-ended

1

10

18

9