249.6 MHz SAW Filter 5 MHz Bandwidth Part Number SF0250BA03189S DESCRIPTION • • • 249.6 MHz SAW bandpass filter with 5 MHz bandwidth. 9.1 x 4.8 mm ceramic LCC package. RoHS compliant. TYPICAL PERFORMANCE Amp 10 dB/div Amp 1 dB/div Phase 5 deg/div Delay 50 ns/div Center = 249.6 MHz, 6 MHz/div (75 kHz incr) S11 (219.6-279.6 MHz) S22 (219.6-279.6 MHz) Spectrum Microwave 400 Nickerson Road, Marlborough, MA 01752, USA • Phone 1-508-251-6400 • Fax 1-508-251-6401 www.SpectrumMicrowave.com DSSF0250BA03189S Rev A 19-Mar-2010 ECN 36650 Page 1 of 3 249.6 MHz SAW Filter 5 MHz Bandwidth Part Number SF0250BA03189S SPECIFICATION Parameter Center Frequency, FC 1 Insertion Loss Amplitude variation (247.1 to 252.1 MHz) Phase Linearity (247.1 to 252.1 MHz) Absolute Delay Lower 1dB Band Edge 2 Upper 1dB Band Edge 2 Relative Attenuation (149.6 to 239.6 MHz) 2 Relative Attenuation (239.6 to 240.6 MHz) 2 Relative Attenuation (240.6 to 242 MHz) 2 Relative Attenuation (242 to 244.6 MHz) 2 Relative Attenuation (254.6 to 257 MHz) 2 Relative Attenuation (257 to 258.6 MHz) 2 Relative Attenuation (258.6 to 259.6 MHz) 2 Relative Attenuation (259.6 to 349.6 MHz) 2 Source and Load Impedance Temperature Coefficient of Frequency Ambient Temperature Notes: Min 252.1 47 40 23 13 13 23 40 43 - Typ 249.6 8.6 0.8 0.7 635 246.8 252.6 50 52 48 25 18 42 47 50 50 -18 25 Max 12 1.1 4 247.1 - Units MHz dB dB p-p deg RMS ns MHz MHz dB dB dB dB dB dB dB dB ohms ppm/˚C ˚C - 1. Reference frequency. Computed as mean of the 3 dB frequencies. 2. All dB values are referenced to the insertion loss value. 3. Input IP3 is +37.5 dBm minimum measured with two tones at 249.5 and 249.7 MHz, -3.5 dBm each tone. MAXIMUM RATINGS Parameter Storage Temperature Range Operating Temperature Range Input Power Level Min Max -40 -20 - 85 85 10 Units ˚C ˚C dBm MATCHING CIRCUIT 10 5 Input 50 Ω Single ended Output 50 Ω Single ended 1 GND Ls1 = 36 nH Cp1 = 27 pF 6 Ls2 = 56 nH Cp2 = 22 pF GND Notes: • Recommend 2% or better tolerance matching components. Typical inductor Q=40. • Optimum values may change depending on board layout. Values shown are intended as a guide only. Spectrum Microwave 400 Nickerson Road, Marlborough, MA 01752, USA • Phone 1-508-251-6400 • Fax 1-508-251-6401 www.SpectrumMicrowave.com DSSF0250BA03189S Rev A 19-Mar-2010 ECN 36650 Page 2 of 3 249.6 MHz SAW Filter 5 MHz Bandwidth Part Number SF0250BA03189S PACKAGE OUTLINE Units: mm Tolerances are typically ±0.15 mm except where indicated. Pad Configuration: Input: 10 Output: 5 Ground: All other pads Package Material: Body: Al2O3 ceramic Lid: Kovar, Ni plated Terminations: Au plating 1 µm min, over a 1.3-8.9 µm Ni plating ISO 9001 Registered All specifications are believed to be accurate and reliable. However, Spectrum Microwave reserves the right to make changes without notice. © 2010 All rights reserved. Spectrum Microwave 400 Nickerson Road, Marlborough, MA 01752, USA • Phone 1-508-251-6400 • Fax 1-508-251-6401 www.SpectrumMicrowave.com DSSF0250BA03189S Rev A 19-Mar-2010 ECN 36650 Page 3 of 3