Tel: +44 1460 256 100 Fax: +44 1460 256 101 www.golledge.com Golledge Electronics Ltd Eaglewood Park, Ilminster Somerset, TA19 9DQ, UK SAW Filter 70.0MHz Part No: MA07421 Model: TB0185A REV. NO.: 1 A. MAXIMUM RATING: 1. Input Power Level: +20 dBm 2. Operating Temperature: 0C to +70C 3. Storage Temperature: -40C to +85C B. ELECTRICAL CHARACTERISTICS: Parameter Unit MHz Min. 69.8 Typ. 70 Max. 70.2 Insertion Loss, IL dB - 21 23 1 dB Bandwidth MHz 7.0 7.3 - 3 dB Bandwidth MHz 7.3 7.9 - 40 dB Bandwidth MHz - 10.2 10.75 Amplitude ripple (within 2.8MHz) dB - 0.8 1 Phase Linearity (within 2.92MHz) (rms) deg - 2.5 6 Group Delay ripple (within 2.92MHz) nsec - 50 100 Absolute Delay sec - 1.02 - 10 ~ 64MHz dB 55 62 - 76~140MHz dB 55 62 - - LT - - -18 - - 25 - Center frequency, Fc Attenuation (Reference level from 0 dB) Substrate Material Temperature Coefficient Ambient Temperature o ppm/ C o C TB0185A v1 1 Tel: +44 1460 256 100 Fax: +44 1460 256 101 www.golledge.com Golledge Electronics Ltd Eaglewood Park, Ilminster Somerset, TA19 9DQ, UK SAW Filter 70.0MHz Part No: MA07421 Model: TB0185A REV. NO.: 1 C. FREQUENCY CHARACTERISTICS: (1) S21 Response: (2) Group Delay and Ripple TB0185A v1 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 Filter 70.0MHz Part No: MA07421 Model: TB0185A REV. NO.: 1 D. MEASUREMENT CIRCUIT: For 50 ohm Unbalanced Input and Output Network analyzer L1 50 L2 K SAW Filter E 50 C2 C1 A,B,C,D,F,G,H,I,J,L Input: L1=180 nH, Q>40; C1=47 pF Output: L2=180 nH, Q>40; C2=27 pF E. OUTLINE DRAWING: 185 Pin K: RF Input Pin E: RF Output Pin L: Input Ground Pin F: Output Ground Pin A, B, C, D, G, H, I, J: To be Ground TB0185A v1 3