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©2009 by RF Monolithics, Inc.

SF2140A-1 7/27/09

Electrical Characteristics

Characteristic

Sym

Notes

Min

Typ

Max

Units

Nominal Center Frequency

1

140.0

MHz

IL

10.3

11.0

dB

1 dB Bandwidth

18.4

20.8

MHz

3 dB Bandwidth

19.6

21.4

MHz

35 dB Bandwidth

25.2

26.4

MHz

Passband Ripple, 130.8 to 149.2 MHz

0.8

1.0

dB

Group Delay Ripple, 130.8 to 149.2 MHz

115

160

ns

Absolute Group Delay

1.0

µs

Input VSWR, 130.8 to 149.2 MHz

1.7

2.8

dB

Output VSWR, 130.8 to 149.2 MHz

1.8

2.3

dB

Temperature Coefficient

ppm/°C

10 to 90 MHz

35

49

dB

90 to 120 MHz

40

47

120 to 126.8 MHz

35

50

153.2 to 160 MHz

35

45

160 to 190 MHz

40

53

190 to 800 MHz

35

62

Source/Load Impedance

50

ohms

Case Style

SMP-53 13.3 X 6.5 mm Nominal Footprint

Lid Symbolization (YY=year, WW=week) See note 4

RFM SF2140A-1 YYWWS##

SMP-53

• Excellent Size-to-Performance Ratio

• Hermetic 13.3 X 6.5 mm Surface-Mount Case

• Complies with Directive 2002/95/EC (RoHS)

Absolute Maximum Ratings

Rating

Value

Units

Input Power Level

+10

dBm

Storage Temperature Range

-40 to +85

°C

Operating Temperature Range

-30 to +80

°C

Suitable for Lead-free Soldering - Maximum Soldering Profile

260 °C for 30 s

140.0 MHz

SAW Filter

SF2140A-1

1.

Unless noted otherwise, all specifications apply over the operating temperature range with filter soldered to the specified demonstration board with impedance

matching to 50

Ω and measured with 50 Ω network analyzer.

2.

Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc.

3.

Rejection is measured as attenuation below the minimum IL point in the passband. Rejection in final user application is dependent on PCB layout and external

impedance matching design. See Application Note No. 42 for details.

4.

"LRIP" or "L" after the part number indicates "low rate initial production" and "ENG" or "E" indicates "engineering prototypes."

5.

The design, manufacturing process, and specifications of this filter are subject to change.

6.

Either Port 1 or Port 2 may be used for either input or output in the design. However, impedances and impedance matching may vary between Port 1 and Port

2, so that the filter must always be installed in one direction per the circuit design.

7.

US and international patents may apply.

8.

RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of RF Monolithics, Inc.

Pb

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes: