Part Number 855272 479.75 MHz SAW Filter Data Sheet Features For wireless applications Usable bandwidth of 20 MHz High attenuation Single-ended operation at 50 Ceramic Surface Mount Package (SMP) Package Pin Configuration Surface Mount 7.01 x 5.51 x 1.63 mm Bottom View 1 2 3 12 4 0.76 11 5 1.63 NOM. 1.78 MAX. 10 6 7.01 1.27 9 8 7 1.70 1.27 Pin No. Description 3 Output 5.51 9 Input 8,2 NC 1,4,5,6,7 Case Ground 10,11,12 Case Ground 0.79 1.14 Dimensions shown are nominal in millimeters All tolerances are 0.15mm except overall length and width 0.13mm 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 - 07-Apr-2003 Page 1 of 5 Part Number 855272 479.75 MHz SAW Filter Data Sheet (1) Electrical Specifications (2) o Operating Temperature: +25 C (3) Parameter Minimum Typical Maximum Unit Center Frequency 479.25 479.75 480.25 MHz Insertion Loss - 9.8 13 dB 1 dB Bandwidth - 23.3 - MHz 3 dB Bandwidth 23 25.5 - MHz 30 dB Bandwidth - 33 - MHz 35 dB Bandwidth - 33.9 36 MHz Passband Variation - 0.75 1.5 dB p-p Group Delay Variation - 25 50 nsec (4) Source Impedance - 50 - (4) Load Impedance - 50 - o Temperature Coefficient of Frequency - -90 - ppm/ C Notes: 1. All specifications are based on the test circuit shown below 2. This specification is valid for room temperature only 3. Electrical margin has been built into the design to account for the variations due to manufacturing tolerances 4. This is the optimum impedance in order to achieve the performance shown Test Circuit: Actual matching values may vary due to PCB layout and parasitics 4pF 3nH 3nH 93 50 8pF 3pF 50 50 1,2,4,5,6 Single-ended 7,8,10,11,12 Subject to change or obsolescence without notice Rev - 07-Apr-2003 Page 2 of 5