140 MHz Bandpass Filter 2.5 MHz Bandwidth Part Number 851906 Data Sheet Typical Performance Parameter Center Frequency Typical Maximum 139.85 140 140.15 dB - 25.6 27.5 1 dB Bandwidth MHz 2 2.13 - 3 dB Bandwidth MHz 2.5 2.556 - 40 dB Bandwidth MHz - 4.2 4.5 dB - 0.21 0.5 Phase Linearity deg - 1.2 3 Group Delay Variation nsec - 35 100 Absolute Delay Passband Variation µsec - 2.391 - Ultimate Rejection dB 50 60 - Substrate Material - - Quartz - °C - 25 - Ambient Temperature Package Outline 141.75 141.4 125 100 75 50 25 0 -25 -50 -75 -100 -125 141.05 140.7 140.35 140 139.65 Horizontal: 350 kHz/Div Vertical: 1 dB/Div Vertical: 25 nsec/Div 139.3 138.95 138.6 Specifications Unit Minimum MHz Insertion Loss 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 138.25 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 Horizontal: MHz/Div 135 136 137 138 139 1401 141 142 143 144 145 Vertical: 10 dB/Div Matching Configuration L1 = 103 nH , L2 = 105 nH Nominal Source/Load Impedance = 50Ω Package Style I 11/24/99 Sawtek Inc. Telephone: (407) 886-8860 Fax: (407) 886-7061