140 MHz SAW Filter

4.7 MHz Bandwidth

Part Number: SF0140BA02359T

Spectrum Microwave

400 Nickerson Road, Marlborough, MA 01752, USA

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

www.SpectrumMicrowave.com

DSSF0140BA02359T Rev B

6-Apr-2010

ECN 36650

Page 2 of 3

SPECIFICATION

Parameter

Min

Typ

Max

Units

139.90

140.00

140.10

MHz

Insertion Loss (at Fc)

-

22.5

25

dB

1 dB Bandwidth

2

4.70

4.96

-

MHz

3 dB Bandwidth

2

5.00

5.28

-

MHz

40 dB Bandwidth

2

-

6.67

7.00

MHz

Absolute delay

-

2.30

2.60

us

Group Delay Deviation (in 1 dB BW)

3

-

110

180

ns p-p

Phase Linearity (in 1 dB BW)

-

5

7

deg p-p

Passband Ripple (in 1 dB BW)

-

0.7

1

ns/div

Ultimate Rejection

50

53

-

dB

Source/Load Impedance

50

ohms

Ambient Temperature (Tref)

-

25

-

˚C

Notes:

1. All specifications apply at 23˚C.

2. Parameter is measured relative to the insertion loss at 140 MHz.

3. This parameter is to be measured after application of a smoothing aperture of 250 KHz.

4. Typical change of filter response with temperature is: ∆f = (T-Tref)*Tc*Fc in ppm.

MAXIMUM RATINGS

Parameter

Min

Typ

Max

Units

Storage Temperature Range

-40

25

85

˚C

Temperature Coefficient of Frequency (Tc)

4

-

-23

-

ppm/˚C

Input Power Level

-

0

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

=

37

nH

Ls2

=

56

nH

Cp1 =

27

pF

1

8

2,7,9,14

Input

50

Ω

Single-ended

Output

50

Ω

Single-ended

GND

GND