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| 0.5-10 GHz General Purpose Gallium Arsenide FET Technical Data ATF-25735 Features * High Output Power: 19.0 Bm Typical P 1 dB at 4 GHz * High Gain: 12.5 dB Typical G 1 dB at 4 GHz * Low Noise Figure: 1.2 dB Typical at 4 GHz * Cost Effective Ceramic Microstrip Package microstrip package. This device is designed for use in general purpose amplifier and oscillator applications in the 0.5-10 GHz frequency range. This GaAs FET device has a nominal 0.3 micron gate length using airbridge interconnects between drain fingers. Total gate periphery is 500 microns. Proven gold based metallization systems and nitride passivation assure a rugged, reliable device. 35 micro-X Package Description The ATF-25735 is a high performance gallium arsenide Schottkybarrier-gate field effect transistor housed in a cost effective Electrical Specifications, TA = 25C Symbol NFO Parameters and Test Conditions Optimum Noise Figure: VDS = 3 V, IDS = 20 mA f = 2. 0 GHz f = 4.0 GHz f = 6.0 GHz f = 2.0 GHz f = 4.0 GHz f =.6.0 GHz f = 4.0 GHz f = 4.0 GHz Units dB Min. Typ. Max. 1.0 1.2 1.4 15.0 13.0 10.5 19.0 12.5 50 50 -3.0 80 100 -2.0 150 -0.8 1.5 GA Gain @ NFO: VDS = 3 V, IDS = 20 mA dB 11.5 dBm dB mmho mA V P1 dB G1 dB gm IDSS VP Power Output @ 1 dB Gain Compression: VDS =5 V, IDS = 50 mA 1 dB Compressed Gain: VDS = 5 V, IDS =50 mA Transconductance: VDS =3 V, VGS = 0 V Saturated Drain Current: VDS =3 V, VGS = 0 V Pinch-off Voltage: VDS = 3 V, IDS = 1 mA 5-63 5965-8710E ATF-25735 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[4] Units V V V mA mW C C Absolute Maximum[1] + 7 -4 -8 IDSS 450 175 -65 to +175 Notes: 1. Permanent damage may occur if any of these limits are exceeded. 2. TCASE TEMPERATURE = 25C. 3. Derate at 3 mW/C for TCASE > 29C. 4. Storage above +150C may tarnish the leads of this package difficult to solder into a circuit. After a device has been soldered into a circuit, it may be safely stored up to 175C. 5. 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 = 325C/W; TCH = 150C 1 m Spot Size[5[ ATF-25735 Typical Performance, TA = 25C 25 25 MSG 20 MSG 20 MAG GAIN (dB) GAIN (dB) 15 15 |S21|2 MSG 10 |S21|2 MAG 10 5 5 0 0.5 1.0 2.0 4.0 6.0 8.0 12.0 0 0.5 1.0 2.0 4.0 6.0 8.0 12.0 FREQUENCY (GHz) FREQUENCY (GHz) Figure 1. Insertion Power Gain, Maximum Available Gain and Maximum Stable Gain vs. Frequency. VDS = 3 V, IDS = 20 mA. Figure 2. Insertion Power Gain, Maximum Available Gain and Maximum Stable Gain vs. Frequency. VDS = 5 V, IDS = 50 mA. 5-64 Typical Scattering Parameters, Common Emitter, Z O = 50 , TA = 25C, VDS = 3 V, IDS = 20 mA Freq. GHz 0.5 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 S11 Mag. .98 .94 .85 .70 .58 .50 .52 .59 .65 .69 .73 .79 .84 Ang. -22 -45 -82 -116 -152 165 122 90 66 44 32 20 7 dB 13.9 13.3 12.2 11.0 10.0 8.9 7.7 6.3 5.1 3.8 2.7 1.1 -0.2 S21 Mag. 4.95 4.61 4.06 3.54 3.17 2.78 2.43 2.06 1.79 1.55 1.36 1.14 .98 Ang. 159 142 110 81 54 27 1 -23 -43 -63 -82 -100 -119 dB -32.0 -27.1 -21.6 -19.3 -17.7 -16.7 -16.1 -15.8 -15.5 -15.3 -15.4 -15.5 -15.7 S12 Mag. .025 .044 .083 .109 .131 .146 .156 .162 .167 .172 .170 .168 .161 S22 Ang. 77 64 45 24 12 -7 -20 -34 -46 -53 -65 -78 -93 Mag. .52 .52 .46 .38 .35 .29 .18 .07 .09 .15 .18 .21 .26 Ang. -12 -20 -41 -61 -81 -97 -112 -161 107 76 53 24 -5 Typical Scattering Parameters, Common Emitter, Z O = 50 , TA = 25C, VDS = 5 V, IDS = 50 mA Freq. GHz 0.5 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 S11 Mag. .93 .88 .78 .65 .55 .48 .47 .56 .65 .73 .78 .80 .85 Ang. -21 -42 -81 -112 -142 -176 142 104 80 61 47 34 18 dB 16.0 15.4 14.1 12.6 11.4 10.6 9.7 8.4 7.0 5.8 4.7 3.6 2.7 S21 Mag. 6.29 5.89 5.08 4.27 3.73 3.37 3.04 2.64 2.25 1.94 1.71 1.51 1.36 Ang. 156 140 108 83 58 36 10 -14 -35 -53 -72 -90 -109 dB -34.0 -29.6 -24.4 -22.6 -21.0 -19.7 -18.3 -17.5 -16.7 -16.1 -15.4 -15.1 -14.8 S12 Mag. .020 .033 .060 .074 .089 .104 .122 .134 .146 .157 .169 .176 .181 S22 Ang. 69 62 49 39 28 20 6 -6 -17 -26 -40 -53 -64 Mag. .56 .53 .47 .44 .41 .37 .28 .14 .07 .14 .20 .27 .36 Ang. -10 -21 -43 -55 -64 -69 -83 -105 172 113 94 68 45 A model for this device is available in the DEVICE MODELS section. 5-65 35 micro-X Package Dimensions .085 2.15 4 SOURCE .083 DIA. 2.11 1 257 GATE DRAIN 3 .020 .508 2 SOURCE Notes: (unless otherwise specified) 1. Dimensions are in mm 2. Tolerances in .xxx = 0.005 mm .xx = 0.13 .057 .010 1.45 .25 .100 2.54 .022 .56 .455 .030 11.54 .76 .006 .002 .15 .05 5-66 |
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