280.00 MHz SAW Filter • • • • Ideal for Receiver in 280.00 MHz Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Rugged, Hermetic, Low Profile F-11 Package SF280 Absolute Maximum Rating (Ta=25°C) Parameter Rating Unit CW RF Power Dissipation P +10 dBm DC Voltage VDC Between Any Two Pins VDC ±30 V Operating Temperature Range TA -10 ~ +60 °C Storage Temperature Range Tstg -40 ~ +85 °C Electronic Characteristics Parameter Nominal Frequency (at 25°C) (Center frequency between 3dB point) Sym Minimum Typical Maximum Unit fC 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 55 65 - dB 40 50 - dB 50 60 - dB |fA| - - 10 ppm/yr DC Insulation Resistance Between any Two Pins - 1.0 - - MΩ Input / Output Impendance (nominal) - - 50 - Ω Attenuation 180.00 … 240.00 MHz 240.00 … 265.00 MHz αrel 320.00 … 380.00 MHz Frequency Aging Absolute Value during the First Year NS = Not Specified Notes: 1. The frequency fC is defined as the midpoint between the 3dB frequencies. 2. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture that is connected to a 50Ω test system with VSWR ≤ 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, fC. Note 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. Phone: +86 10 6301 4184 Fax: +86 10 6301 9167 © April 2004 by Vanlong Technology Co., Ltd. 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 [email protected]. Email: [email protected] Web: http://www.vanlong.com SF280 280.00 MHz SAW Filter Package Dimensions (F-11) Electrical Connections Terminals 1 2 3 4 Connection Input/Output Case Ground Case Ground Output/Input Package Dimensions Dimensions A B C D E F Marking Nom. (mm) 11.0 4.5 3.2 0.45 5.0 2.54 Tol. (mm) ±0.3 ±0.3 ±0.3 ±0.1 ±0.5 ±0.2 Test Circuit SF280 From 50Ω source To 50Ω load Ink Marking Color: Black or Blue Typical Frequency Response Phone: +86 10 6301 4184 Fax: +86 10 6301 9167 © April 2004 by Vanlong Technology Co., Ltd. Email: [email protected] Web: http://www.vanlong.com SF280