Datasheet > SF1084B

SF1084B

更新时间： 2024-11-10 09:29:03

品牌	Logo	应用领域
RFM		/
页数	文件大小	规格书
5页	58K
描述
299 MHz SAW Filter

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中文翻译

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SF1084B 数据手册

SF1084B 299 MHz SAW Filter

Designed for GSM BTS Transmitter Applications

Low Insertion Loss and Small Size

8.5 x 5.8 mm Surface-Mount Case

Unbalanced Input and Output

Characteristic

Nominal Center Frequency

Passband

Sym

Min

Typ

299.000

Max

Units Notes

MHz

Insertion Loss at fc

8.0

3 dB Passband BW₃

Amplitude Ripple over fc ±75 kHz

kHz

dB_P-P

ns_P-P

1, 2

±275

0.3

100

GDV

Group Delay Variation over fc ±75 kHz

100 kHz to fc-6.0 MHz and fc+6.0 to 540 MHz

Ultimate

Rejection

>40

1, 2, 3

Operating Temperature Range

T_A

-40

+85

°C

External L-C

SM8558-8 8.5 x 5.8 mm Nominal Footprint

RFM SF1084B YYWWXXX

Impedance Matching to 50 W unbalanced

Case Style

Lid Symbolization (YY=year, WW=week, XXX=lot code)

Absolute Maximum Ratings

Electrical Connections

Rating

Value

+10

Units

Connection Terminals

Maximum Incident Power in Passband

Max. DC voltage between any 2 terminals

Storage Temperature Range

Max Soldering Profile

dBm

VDC

°C

Port 1 Hot

Port 1 Gnd Return

Port 2 Hot

-40 to +85

Port 2 Gnd Return

235°C for 90 s

Case Ground All Others

Notes:

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 W and measured with 50 W 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.

10. Electrostatic Sensitive Device. Observe precautions for handling.

RF Monolithics, Inc.

4347 Sigma Road

Dallas, Texas 75244

USA

Phone: +1(972)233-2903

Fax: +1(972)387-8148

e-mail: info@rfm.com

European Sales Office

44 1963 251383

44 1963 251510

Home page: www.rfm.com

SF1084B 7/22/1999 R

12 3 4 5

中文翻译

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