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| (R) SF1041-1 71 MHz Low-Loss SAW Filter * * * * Designed for GSM IF Filter Applications Advanced Low-Loss Quartz Design Simple Source/Load Matching Hermetic Metal DIP Package The SF1041-1 is designed as an IF filter for GSM radiotelephone applications. The SF1041-1 utilizes RFM's advanced SAW design and fabrication technology to achieve high performance, low loss, and simple source/load matching. Quartz construction provides excellent frequency stability over a wide operating temperature range. Electrical Characteristics Characteristic Filter Operating Frequency Insertion Loss 3 dB Bandwidth 30 dB Bandwidth 35 dB Bandwidth 40 dB Bandwidth 45 dB Bandwidth Ultimate Rejection Group Delay Deviation (Fo100 kHz) Operating Temperature Sym fo IL B3 B30 B35 B40 B45 GDD TA Notes 1 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2,3 1 Minimum Typical 71.00 6.5 100 Maximum 9.5 200 400 1200 1600 2400 0.50 +85 Units MHz dB kHz kHz kHz kHz kHz dB sP-P C 45 -10 50 0.35 CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. NOTES: 1. Specifications are referenced to fo = 71.00 MHz. Bandwidth specifications include manufacturing frequency tolerance and frequency drift over temperature range TA. 2. Specifications are given with filter matched to 50 ohms. Input match (pin 1) is 330 nH 2% series L with 75pF 5% shunt C on 50 ohm side; output match (pin 8) is 440 nH 2% series L with 75pF 5% shunt C on 50 ohm side. Nominal inductor Q is 50 at 71 MHz. 3. Ultimate rejection specified from 1 to 110 MHz. Spurious responses at 1.6 and 1.8 times fo suppressed by matching networks. 4. The following U.S. Patents apply: 4,353,046 and 5,073,763. Specifications subject to change without notice. 5. RFM(R) is registered in the US Patent and Trademark office. 4-14 The SF1041-1 71 MHz Low-Loss SAW Filter SF 1041-1 Match to 50 ohms External Shunt Equivalent RL Values for SF1041-1 Match SF1041-1 Package Drawing (all dimensions in mm) 285nh 390nh 1.8k 4-15 |
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