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Tel: +44 1460 256 100 Fax: +44 1460 256 101 www.golledge.com Golledge Electronics Ltd Eaglewood Park, ILMINSTER Somerset, TA19 9DQ, UK SAW Resonator 479.450MHz Model: TC0238A Part No: MA08343 Rev. No: 1 TC0238A v1 1 A. FEATURES: One-Port Resonator B. MAXIMUM RATING: 1. Input Power Level: 0dBm 2. DC voltage: 12V 3. Operating Temperature: -40°C to +85°C 4. Storage Temperature: -40°C to +85°C C. ELECTRICAL CHARACTERISTICS: Reference Temperature TA=25°C Characteristic Units Min. Typ. Max. Center frequency Fc MH z 479.375 479.450 479.525 Insertion Loss IL dB - 1.41 2.5 Unload quality factor QU 6000 10000 - Ageing of fc ppm/yr - - ±10 Motional capacitance C1 fF - 1.36 - Motional inductance L1 μH - 80.9 - Motional resistance R1 Ohm - 20.42 - Parallel capacitance Co pF - 2.77 - Frequency Temperature coefficient (TCf) ppm/c*2 - 0.032 - Turnover To deg. C 10 25 40 Package size SMD 3 X 3 X 1.1mm Temperature dependence of fc: fc (TA) = fc (TO) (1+TCf (TA-TO)2)
Tel: +44 1460 256 100 Fax: +44 1460 256 101 www.golledge.com Golledge Electronics Ltd Eaglewood Park, ILMINSTER Somerset, TA19 9DQ, UK SAW Resonator 479.450MHz Model: TC0238A Part No: MA08343 Rev. No: 1 TC0238A v1 2 D. OUTLINE DRAWING: E. EQUIVILENT CIRCUIT: One-Port Resonator: R1 C1 L1 # E # B Source Impedance Load Impedance 50Ω 50Ω
Tel: +44 1460 256 100 Fax: +44 1460 256 101 www.golledge.com Golledge Electronics Ltd Eaglewood Park, ILMINSTER Somerset, TA19 9DQ, UK SAW Resonator 479.450MHz Model: TC0238A Part No: MA08343 Rev. No: 1 TC0238A v1 3 F. FREQUENCY CHARACTERISTICS: -30 -25 -20 -15 -10 dB Frequency (Center Frequency 479.45MHz Span 3MHz) Resonator 479.45MHz Frequency Charactristics (S21) G. TEST CIRCUIT: Network analyzer SAW Resonator E B A, C, D, F To 50Ω Network Analyzer From 50Ω Network Analyzer
Tel: +44 1460 256 100 Fax: +44 1460 256 101 www.golledge.com Golledge Electronics Ltd Eaglewood Park, ILMINSTER Somerset, TA19 9DQ, UK SAW Resonator 479.450MHz Model: TC0238A Part No: MA08343 Rev. No: 1 TC0238A v1 4 H. PACKING: 1. Reel Dimension 2. Tape Dimension