70 MHz SAW Filter

2.5 MHz Bandwidth

Part Number: SF0070BA03050S

Spectrum Microwave

400 Nickerson Road, Marlborough, MA 01752, USA

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

www.SpectrumMicrowave.com

DSSF0070BA03050 Rev B 16-Feb-2010

ECN 36650

Page 2 of 3

SPECIFICATION

Parameter

2

Min

Typ

Max

Units

Center Frequency (Fc)

1

69.88

70.00

70.12

MHz

Insertion Loss

9.7

10.0

dB

1 dB Bandwidth

2.00

2.21

MHz

3 dB Bandwidth

2.50

2.75

MHz

40 dB Bandwidth

4.37

5.10

MHz

Passband Ripple (80% of 1 dB Bandwidth)

0.6

1.0

dB p-p

Phase Linearity (70% of 3 dB Bandwidth)

3.5

9.0

deg p-p

Group Delay Variation (70% of 3 dB Bandwidth)

150

400

ns p-p

Absolute Delay

1.8

us

Ultimate Rejection

40

50

dB

Source and Load Impedance

50

Ω

Input Power

+10

+13

dBm

Temperature Coefficient of Fc

-23

ppm/

°C

Ambient Temperature

25

°C

Notes:

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

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

MAXIMUM RATINGS

Parameter

Min

Max

Units

Storage Temperature Range

-40

85

˚C

Operating Temperature Range

0

70

˚C

Input Power Level

13

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

=

270

nH

Ls2 =

270

nH

Lp1

=

68

nH

Lp2 =

68

nH

10

5

1

6

Input

50

Ω

Single-ended

Output

50

Ω

Single-ended

GND

GND