280.00 MHz SAW Filter

Phone: +86 10 6301 4184

Fax: +86 10 6301 9167

Email: sales@vanlong.com

Web: http://www.vanlong.com

© April 2004 by Vanlong Technology Co., Ltd.

SF280

•

Ideal for Receiver in 280.00 MHz

•

Low-Loss, Coupled-Resonator Quartz Design

•

Simple External Impedance Matching

•

Rugged, Hermetic, Low Profile F-11 Package

Absolute Maximum Rating (Ta=25

°C)

Parameter

Rating

Unit

CW RF Power Dissipation

P

+10

dBm

±30

V

Operating Temperature Range

-10 ~ +60

°C

Storage Temperature Range

-40 ~ +85

°C

Electronic Characteristics

Parameter

Sym

Minimum

Typical

Maximum

Unit

Nominal Frequency (at 25

°C)

(Center frequency between 3dB point)

NS

280.00

NS

MHz

Insertion Loss

279.065 … 280.094 MHz

IL

-

2.2

3.0

dB

Amplitude Ripple (p-p)

279.065 … 280.094 MHz

∆α

-

0.3

1.0

dB

Attenuation

180.00 … 240.00 MHz

240.00 … 265.00 MHz

320.00 … 380.00 MHz

α

rel

55

40

50

65

50

60

-

-

-

dB

dB

dB

Frequency Aging

Absolute Value during the First Year

-

-

10

ppm/yr

DC Insulation Resistance Between any Two Pins

-

1.0

-

-

M

Ω

Input / Output Impendance (nominal)

-

-

50

-

Ω

NS = Not Specified

Notes:

1.

frequencies.

2.

Unless noted otherwise, all measurements are made with the filter

installed in the specified test fixture that is connected to a 50

Ω test

system with VSWR

≤ 1.2:1. The test fixture L and C are adjusted

that insertion loss, bandwidth, and passband shape are dependent

on the impedance matching component values and quality.

3.

Unless noted otherwise, specifications apply over the entire

specified operating temperature range.

4.

The specifications of this device are based on the test circuit

shown above and subject to change or obsolescence without

notice.

5.

All equipment designs utilizing this product must be approved by

the appropriate government agency prior to manufacture or sale.

6.

Our liability is only assumed for the Surface Acoustic Wave (SAW)

component(s) per se, not for applications, processes and circuits

implemented within components or assemblies.

7.

For questions on technology, prices and delivery please contact

our sales offices or email to sales@vanlong.com.

SF280