Part Number 855745 70 MHz SAW Filter Preliminary Data Sheet Features For broadband applications Typical 3 dB bandwidth of 5.7 MHz High attenuation Single-ended operation Ceramic Surface Mount Package (SMP) Replaces Sawtek P/N 851553 (BW 3dB=5.5 MHz) Hermetic RoHS compliant (2002/95/EC), Pb-free Pb Package Pin Configuration Surface Mount 19.00 x 6.50 x 1.75 mm Bottom View 1 2 3 4 5 1.75 NOM. 1.96 MAX. 10 9 8 7 6 0.76 19.0 1.91 1.80 Pin No. Description R0.51 5 RF output 6.50 10 RF input 1,6 Ground 2.31 1.02 2,3,4 Case ground 7,8,9 Case ground Dimensions shown are nominal in millimeters All tolerances are 0.15mm except overall length and width +0.15mm/-0.10mm Body: Al O ceramic 2 3 Lid: Kovar, Ni plated Terminations: Au plating 0.5 - 1.0m, over a 2 - 6m Ni plating Subject to change or obsolescence without notice Rev B 13-Oct-2005 Page 1 of 5 Part Number 855745 70 MHz SAW Filter Preliminary Data Sheet (1) Electrical Specifications (2) o Operating Temperature Range: 0 to +70 C (3) Parameter Minimum Typical Maximum Unit Center Frequency - 70 - MHz Minimum Insertion Loss - 22.2 24 dB (4) Lower 1 dB Bandedge - 67.45 67.65 MHz Upper 1 dB Bandedge 72.35 72.66 - MHz (4) Lower 3 dB Bandedge - 67.17 67.27 MHz Upper 3 dB Bandedge 72.73 72.89 - MHz (4) Lower 40 dB Bandedge 66.08 66.28 - MHz Upper 40 dB Bandedge - 73.76 73.92 MHz Amplitude Variation 67.65 - 72.35 MHz - 0.61 1.1 dB p-p Phase Linearity 67.65 - 72.35 MHz - 2.6 5.0 deg p-p Group Delay Variation 67.65 - 72.35 MHz - 55.7 110 nsec Absolute Delay - 2.065 - sec (4) Relative Attenuation 10 - 58 MHz 42.0 55 - dB 58 - 66 MHz 37.0 47 - dB 74 - 82 MHz 41.0 47 - dB 82 - 90 MHz 44.5 54 - dB 90 - 120 MHz 51.0 60 - dB 120 - 145 MHz 47.5 54 - dB 145 - 200 MHz 59.0 65 - dB (5) Source Impedance: - 50 - (5) Load Impedance: - 50 - Substrate Material - LiTaO - - 3 o Temperature Coefficient of Frequency - -23 - ppm/ C Notes: 1. All specifications are based on the matching schematic shown on page 4 2. In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over temperature 3. Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances 4. All attenuation measurements are measured relative to minimum insertion loss 5. This is the optimum impedance in order to achieve the performance shown Subject to change or obsolescence without notice Rev B 13-Oct-2005 Page 2 of 5