140 MHz SAW Filter

1 MHz Bandwidth

Part Number: SF0140BA02451S

IDT

• SAW Products • 324 Clark Street, Worcester, MA 01606, USA • Ph 1-508-852-5400 • Fax 1-508-852-8456

www.idt.com

DSSF0140BA02451S Rev –

15-Jun-2006

Page 2 of 3

SPECIFICATION

Parameter

Min

Typ

Max

Units

1

139.90

140.00

140.10

MHz

Minimum Insertion Loss

-

9.8

12.0

dB

1 dB Bandwidth

2

1.00

1.33

-

MHz

3 dB Bandwidth

2

1.20

1.45

-

MHz

40 dB Bandwidth

2

2.71

2.80

MHz

Rejection (70 to 138.65 MHz)

2

(141.6 to 210 MHz)

2

40

40

44

44

-

-

dB

dB

Passband Amplitude Ripple

3

-

0.5

1.0

dB p-p

Passband Phase Ripple

3

-

3.2

6

deg p-p

Passband Group Delay Ripple

3

-

130

300

ns p-p

Absolute Delay

1.76

-

us

Input Return Loss at Fc

8

15

-

dB

Output Return Loss at Fc

8

15

-

dB

Temperature coefficient of Frequency

-

-0.032

-

ppm/˚C

2

Source/Load Impedance

50

ohms

Ambient Temperature

20

25

30

˚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. Measured over Fc +/- 0.5 MHz.

MAXIMUM RATINGS

Parameter

Min

Max

Units

Storage Temperature Range

-40

85

˚C

Operating Temperature Range

-40

85

˚C

Input Power Level

-

10

dBm

MATCHING CIRCUIT

Typical component values:

(Minimum inductor Q = 40)

Notes:

1. Recommend use of 2% tolerance matching components.

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

Ls1

=

192

nH

Ls2

=

213

nH

Cp1

=

47

pF

Cp2

=

56

pF

1

6

10

5

Input

50

Ω

Single-ended

Output

50

Ω

Single-ended

GND

GND