SF2025B【PDF 1/8 页】SAW FILTER IF 259.861MHZ SMP-03

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SF2025B

Designed for SDARS Receiver IF Application

Low Insertion Loss

5.0 X 7.0 mm Surface-Mount Case

259.861 MHz

Differential Input and Output

Complies with Directive 2002/95/EC (RoHS)

SAW Filter

Absolute Maximum Ratings

Rating

Maximum Incident Power in Passband

Max. DC voltage between any 2 terminals

Storage Temperature Range

Value

+10

-40 to +105

Units

dBm

VDC

°C

Suitable for lead-free soldering - Max Soldering Temperature

Electrical Characteristics

260°C for 30 s

SMP-03

Characteristic

Sym

Notes

Min

Typ

Max

Units

Nominal Center Frequency

Passband

Minimum Insertion Loss

f C

259.861

13.3

15.5

MHz

1.5 dB Passband

3 dB Passband

Amplitude Ripple from fc-6.354 MHz to fc-4.2885 MHz (-20 to 85°C)

Amplitude Ripple from fc-6.354 MHz to fc-4.2885 MHz (-40 to -20°C)

Amplitude Ripple from fc-4.4965 MHz to fc-2.431 MHz

BW 1.5

BW 3

13.8

14.5

1.5

MHz

Amplitude Ripple from fc-2.639 MHz to fc+0.079 MHz

Amplitude Ripple from fc-0.079 MHz to fc+2.639 MHz

Amplitude Ripple from fc+2.431 MHz to fc+4.4965 MHz

Amplitude Ripple from fc+4.2885 MHz to fc+6.354 MHz (-40 to 60°C)

Amplitude Ripple from fc+4.2885 MHz to fc+6.354 MHz (60 to 85°C)

1, 2

1.15

dB P-P

Rejection

Group Delay Variation over fc-6.354 MHz to fc-2.431 MHz

and from fc+2.431 MHz to fc+6.354 MHz

Group Delay Variation over fc±2.639 MHz

fc-28 to fc-12 MHz and fc+12 to fc+33 MHz

GDV1

GDV2

120

ns P-P

fc-12 to fc-10.5 MHz

fc+9 to fc+12 MHz

1, 2, 3

Operating Temperature Range

T A

-40

+85

°C

Frequency Temperature Coefficeint

Differential Input and Output Impedance

-18

L & C Match to 150 ohms

ppm/°C

Case Style

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

Electrical Connections

Connection

Terminals

Port 1 Hot

Port 1 Ground Return

Port 2 Hot

Port 2 Ground Return

Case Ground

All Others

SMP-03 7 x 5 mm Nominal Footprint

RFM SF2025B YYWWS

Notes:

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

Unless noted otherwise, all specifications apply over the operating temperature

to change.

range with filter soldered to the specified demonstration board with impedance

matching to 50 ? and measured with 50 ? network analyzer.

Tape and Reel Standard Per ANSI / EIA 481.

Either Port 1 or Port 2 may be used for either input or output in the design.

Unless noted otherwise, all frequency specifications are referenced to the nom-

inal center frequency, fc.

Rejection is measured as attenuation below the minimum IL point in the pass-

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.

band. Rejection in final user application is dependent on PCB layout and exter-

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

US and international patents may apply.

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

"LRIP" or "L" after the part number indicates "low rate initial production" and

RF Monolithics, Inc.

"ENG" or "E" indicates "engineering prototypes."

10.

RF Monolithics, Inc.

RFM Europe

Phone: (972) 233-2903

Phone: 44 1963 251383

Fax: (972) 387-8148

Fax: 44 1963 251510

E-mail: info@rfm.com

http://www.rfm.com

Page 1 of 8

?1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.

SF2025B-102105

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