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| 2 - 10 GHz Medium Power Gallium Arsenide FET Technical Data ATF-46171 Features * High Output Power: 27.0 dBm Typical P 1 dB at 4 GHz * High Gain at 1 dB Compression: 11.0 dB Typical G 1 dB at 4 GHz * High Power Efficiency: 38% Typical at 4 GHz * Hermetic Metal-Ceramic Stripline Package range. This nominally 0.5 micron gate length GaAs FET is an interdigitated four-cell structure using airbridge interconnects between drain fingers. Total gate periphery is 1.25 millimeters. Proven gold based metallization systems and nitride passivation assure a rugged, reliable device. This device is suitable for applications in space, airborne, military ground and shipboard, and commercial environments. It is supplied in a hermetic high reliability package with low parasitic reactance and minimum thermal resistance. 70 mil Flange Package Description The ATF-46171 is a gallium arsenide Schottky-barrier-gate field effect transistor designed for medium power, linear amplification in the 2 to 10 GHz frequency Electrical Specifications, TA = 25C Symbol P1 dB G1 dB add gm IDSS VP Parameters and Test Conditions Power Output @ 1 dB Gain Compression: VDS = 9 V, IDS = 125 mA 1 dB Compressed Gain: VDS = 9 V, IDS = 125 mA Efficiency @ P1dB: VDS = 9 V, IDS = 125 mA Transconductance: VDS = 2.5 V, IDS = 125 mA Saturated Drain Current: VDS = 2.5 V, VGS = 0 V Pinch-off Voltage: VDS = 2.5 V, IDS = 5 mA f = 4.0 GHz f = 8.0 GHz f = 4.0 GHz f = 8.0 GHz f = 4.0 GHz Units dBm dB % mmho mA V 200 -5.4 Min. 25.0 10.0 Typ. Max. 27.0 26.5 11.0 6.0 38 100 330 -3.5 450 -2.0 5-101 5965-8729E ATF-46171 Absolute Maximum Ratings Symbol VDS VGS VGD IDS PT TCH TSTG Parameter Drain-Source Voltage Gate-Source Voltage Gate-Drain Voltage Drain Current Power Dissipation [2,3] Channel Temperature Storage Temperature Units V V V mA W C C Absolute Maximum[1] +14 -7 -16 IDSS 2.0 175 -65 to +175 Notes: 1. Permanent damage may occur if any of these limits are exceeded. 2. TCASE TEMPERATURE = 25C. 3. Derate at 13 mW/C for TCASE > 25C. 4. The small spot size of this technique results in a higher, though more accurate determination of jc than do alternate methods. See MEASUREMENTS section for more information. Thermal Resistance: Liquid Crystal Measurement: jc = 75C/W; TCH = 150C 1 m Spot Size[4] ATF-46171 Typical Performance, TA = 25C 28 20 30 25 15 G1 dB (dBm) POUT (dBm) 25 P1 dB 20 40 GAIN (dB) MSG 27 P1 dB (dBm) 20 15 10 5 15 MAG MAG 26 G1 dB 10 30 20 10 0 0 5 10 15 20 25 PIN (dBm) add (%) 10 |S21|2 25 5 5 24 2.0 4.0 6.0 0 8.0 10.0 12.0 0 0 1.0 2.0 4.0 6.0 8.0 12.0 16.0 FREQUENCY (GHz) FREQUENCY (GHz) Figure 1. Power Output @ 1 dB Gain Compression and 1 dB Compressed Gain vs. Frequency. VDS = 9V, IDS = 125 mA. Figure 2. Output Power and Power Added Efficiency vs. Input Power. VDS = 9 V, IDS = 125 mA, f = 4.0 GHz. Figure 3. Insertion Power Gain, Maximum Available Gain and Maximum Stable Gain vs. Frequency. VDS = 9 V, IDS = 125 mA. 5-102 Typical Scattering Parameters, Common Emitter, Z O = 50 , TA = 25C, VDS = 9 V, IDS = 125 mA Freq. GHz 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 S11 Mag. .95 .84 .81 .81 .80 .79 .78 .77 .79 .79 .78 .76 .73 .71 .73 .75 Ang. -54 -106 -145 -172 171 159 141 123 108 100 93 85 67 47 35 26 dB 12.7 11.0 8.9 6.6 4.6 3.1 2.2 1.4 -0.1 -1.4 -2.5 -3.5 -4.3 -5.8 -7.5 -8.9 S21 Mag. 4.30 3.56 2.80 2.14 1.70 1.44 1.29 1.17 .99 .85 .75 .67 .61 .51 .42 .36 Ang. 138 99 67 40 18 1 -18 -36 -58 -73 -86 -97 -118 -138 -157 -157 dB -29.4 -26.7 -25.7 -25.0 -24.4 -24.0 -23.5 -23.0 -22.5 -22.0 -21.6 -20.6 -19.5 -19.0 -18.6 -18.3 S12 Mag. .034 .046 .052 .056 .060 .063 .067 .071 .075 .079 .083 .093 .106 .112 .118 .121 S22 Ang. 63 30 13 2 -3 -6 -10 -14 -17 -21 -24 -32 -49 -66 -71 -78 Mag. .71 .60 .52 .52 .58 .63 .63 .64 .67 .74 .76 .79 .80 .83 .85 .90 Ang. -22 -44 -71 -101 -122 -135 -147 -164 171 152 142 133 119 98 83 72 A model for this device is available in the DEVICE MODELS section. 70 mil Flange Package .270 MIN 6.86 MIN 4 SOURCE .26 6.7 GATE 1 .015 .381 DRAIN 3 .08 2.0 .24 6.0 2 SOURCE .02 .50 .003 .002 .08 .05 .070 1.78 .05 1.3 .034 .86 Notes: (unless otherwise specified) 1. Dimensions are in mm 2. Tolerances in .xxx = 0.005 mm .xx = 0.13 Package marking code is 461 5-103 |
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