140 MHz Bandpass Filter 7 MHz Bandwidth Part Number 851915 Data Sheet Typical Performance Parameter Center Frequency 139.8 Typical Maximum 140 140.2 dB - 25 27 1 dB Bandwidth MHz 6.5 6.7 - 3 dB Bandwidth MHz 7 7.3 - 40 dB Bandwidth MHz - 8.8 9.2 dB - 0.45 0.7 Phase Linearity deg - 3.2 6 Group Delay Variation nsec - 54 130 Absolute Delay Passband Variation µsec - 2.998 - Ultimate Rejection dB 50 65 - Substrate Material - - - °C LiTaO3 - 25 - Ambient Temperature Package Outline 144 143.2 100 80 60 40 20 0 -20 -40 -60 -80 -100 142.4 141.6 140.8 140 139.2 Horizontal: 800 kHz/Div Vertical: 1 dB/Div Vertical: 20 nsec/Div 138.4 137.6 136.8 Specifications Unit Minimum MHz Insertion Loss at Fo 136 152.5 150 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 147.5 145 142.5 137.5 140 Horizontal: 2.5 MHz/Div Vertical: 10 dB/Div 135 132.5 130 127.5 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 Matching Configuration L1 = 56 nH, L2 = 47 nH C1 = 56 pf Nomianl Source/Load Impedance = 50Ω Package Style I 11/24/99 Sawtek Inc. Telephone: (407) 886-8860 Fax: (407) 886-7061