Datasheet > SF2145B

SF2145B

更新时间： 2024-02-11 02:36:45

品牌	Logo	应用领域
RFM		LTE
页数	文件大小	规格书
5页	252K
描述
895 MHz SAW Filter

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技术参数
数据手册

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SF2145B 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
Reach Compliance Code：	compliant	Factory Lead Time：	12 weeks
风险等级：	5.78	Is Samacsys：	N
其他特性：	TAPE AND REEL	中心频率或截止频率 (fo/fc)：	895 MHz
滤波器类型：	SAW FILTER	高度：	2 mm
输入阻抗：	50 OHM	最大插入损耗：	9 dB
长度：	7.2 mm	安装类型：	SURFACE MOUNT
功能数量：	1	端子数量：	10
最高工作温度：	70 °C	最低工作温度：	-20 °C
输出阻抗：	50 OHM Ω	包装材料：	CERAMIC
物理尺寸：	L7.2XB5.2XH2.0 (mm)/L0.283XB0.205XH0.079 (inch)	子类别：	SAW Filters
宽度：	5.2 mm	Base Number Matches：	1

SF2145B 数据手册

SF2145B

• SAW Filter, 895 MHz, 15 MHz BW

• 7.0 X 5.0 mm 10 pin Surface-Mount Case

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

895 MHz

SAW Filter

Absolute Maximum Ratings

Rating

Value

+20

Units

dBm

VDC

°C

Maximum Incident Power in Passband

Maximum DC Voltage Between any Two Terminals

Operating Temperature Range

-20 to +70

SMP-03

Electrical Characteristics

Characteristic

Sym

Notes

Min

Typ

Max

Units

895

Center Frequency

MHz

Ω

Source Impedance, single ended

Load Impedance, single ended

1 dB Bandwidth

Ω

MHz

Insertion Loss, 894 to 895.5 MHz

8.5

9.0

0.3

Any point within 894 to 895.5 MHz

measured at a constant temperature with the

RF input level varying from +10 to +20 dBm

Insertion Loss Variation:

∆dB

Amplitude Ripple, 894 to 895.5 MHz

.35

814

.75

824

Average Group Delay, 894 to 895.5 MHz

Group Delay Variation, 894.0 to 895.5 MHz

804

P-P

Input / Output Return Loss at f

Temperature Coefficient

-18

ppm/K

Case Style

SMP-03 7.0 x 5.0 mm Nominal Footprint

RFM SF2145B YYWW

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

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

Unless noted otherwise, all specifications apply over the operating tem-

perature range with filter soldered to the specified demonstration board

with impedance matching to 50 Ω and measured with 50 Ω network ana-

lyzer.

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

subject to change.

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.

US and international patents may apply.

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

trademarks of RF Monolithics, Inc.

Unless noted otherwise, all frequency specifications are referenced to the

nominal center frequency, fc.

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.

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

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

www.RFM.com E-mail: info@rfm.com

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SF2145B - 7/9/09

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