0.5 – 10 GHz General Purpose Gallium Arsenide FET Technical Data ATF-25570 Features • High Output Power: 20.5 dBm Typical P1 dB at 4␣ GHz • Low Noise Figure: 1.0 dB Typical at 4 GHz • High Associated Gain: 14.0␣ dB Typical at 4␣ GHz • Hermetic Gold-Ceramic Microstrip Package Description The ATF-25570 is a high performance gallium arsenide Schottkybarrier-gate field effect transistor housed in a hermetic, high reliabil- ity package. This device is designed for use in general purpose amplifier and oscillator applications in the 0.5-10 GHz frequency range. 70 mil Package 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. Electrical Specifications, TA = 25°C Symbol Parameters and Test Conditions NFO Optimum Noise Figure: VDS = 3 V, IDS = 20 mA GA Gain @ NFO: VDS = 3 V, IDS = 20 mA P1 dB G1 dB Power Output @ 1 dB Gain Compression: VDS =5 V, IDS = 50 mA 1 dB Compressed Gain: VDS =5 V, IDS =50 mA gm Transconductance: VDS =3 V, VGS = 0 V IDSS Saturated Drain Current: VDS = 3 V, VGS = 0 V VP Pinch-off Voltage: VDS = 3 V, IDS = 1 mA 5965-8711E 5-60 Units Min. Typ. Max. f = 4.0 GHz f = 6.0 GHz f = 8.0 GHz f = 4.0 GHz f = 6.0 GHz f = 8.0 GHz dB f = 4.0 GHz dBm 20.5 f = 4.0 GHz dB 13.0 dB 13.0 1.0 1.2 1.4 14.0 11.0 8.5 1.3 mmho 50 80 mA 50 100 150 V -3.0 -2.0 -0.8 ATF-25570 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 mW °C °C Absolute Maximum[1] +7 -4 -8 IDSS 450 175 -65 to +175 θjc = 300°C/W; TCH = 150°C 1␣ µm Spot Size[4] Thermal Resistance: Liquid Crystal Measurement: ATF-25570 Typical Performance, TA = 25°C 25 25 MSG 20 MSG 15 MAG 10 |S21|2 5 0 0.5 GAIN (dB) GAIN (dB) 20 15 MAG |S21|2 10 5 1.0 2.0 4.0 6.0 8.0 12.0 FREQUENCY (GHz) Figure 1. Insertion Power Gain, Maximum Available Gain and Maximum Stable Gain vs. Frequency. VDS = 3 V, IDS = 20 mA. 0 0.5 1.0 2.0 4.0 6.0 8.0 12.0 FREQUENCY (GHz) Figure 2. Insertion Power Gain, Maximum Available Gain and Maximum Stable Gain vs. Frequency. VDS = 5 V, IDS = 50 mA. 5-61 Notes: 1. Permanent damage may occur if any of these limits are exceeded. 2. TCASE TEMPERATURE = 25°C. 3. Derate at 3.3 mW/°C for TCASE > 40°C. 4. The small spot size of this technique results in a higher, though more accurate determination of θjc than do alternate methods. See MEASUREMENTS section for more information. Typical Scattering Parameters, Common Emitter, Z O = 50 Ω, TA = 25°C, 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 Mag. .98 .96 .84 .78 .72 .68 .63 .60 .58 .59 .60 .60 .59 S11 Ang. -24 -41 -76 -100 -123 -142 -162 175 150 128 113 104 91 S21 Mag. 5.02 4.70 4.14 3.48 3.01 2.67 2.45 2.30 2.06 1.90 1.72 1.61 1.56 dB 14.0 13.4 12.3 10.8 9.6 8.5 7.8 7.2 6.3 5.6 4.7 4.1 3.9 Ang. 160 145 115 94 73 54 36 18 -1 -19 -36 -48 -68 dB -28.9 -26.2 -22.5 -20.9 -19.8 -18.8 -18.3 -17.5 -17.0 -16.7 -16.4 -16.1 -15.9 S12 Mag. .036 .049 .075 .090 .102 .114 .121 .133 .141 .146 .151 .157 .160 S22 Ang. 71 62 44 33 20 9 0 -7 -16 -28 -35 -40 -44 Mag. .56 .55 .49 .46 .42 .38 .35 .30 .26 .25 .26 .28 .30 Ang. -24 -33 -51 -60 -76 -88 -101 -118 -138 -167 172 155 146 Typical Scattering Parameters, Common Emitter, Z O = 50 Ω, TA = 25°C, 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 Mag. .97 .94 .81 .73 .66 .61 .57 .56 .57 .59 .60 .60 .57 S11 Ang. -27 -45 -82 -105 -128 -148 -170 167 145 127 115 108 93 S21 Mag. 6.49 5.95 4.72 3.86 3.29 2.88 2.65 2.41 2.19 2.00 1.82 1.72 1.67 dB 16.2 15.5 13.5 11.7 10.3 9.2 8.5 7.6 6.8 6.0 5.2 4.7 4.5 Ang. 156 141 111 91 70 52 34 16 -1 -18 -35 -47 -64 A model for this device is available in the DEVICE MODELS section. 70 mil Package Dimensions .040 1.02 SOURCE 4 .020 .508 GATE DRAIN 3 1 2 SOURCE .004 ± .002 .10 ± .05 .070 1.70 .495 ± .030 12.57 ± .76 Notes: (unless otherwise specified) 1. Dimensions are in mm 2. Tolerances in .xxx = ± 0.005 mm .xx = ± 0.13 .035 .89 5-62 dB -32.0 -29.9 -26.2 -24.9 -23.4 -22.5 -21.6 -20.2 -19.2 -18.5 -17.8 -17.5 -16.9 S12 Mag. .025 .032 .049 .057 .068 .075 .083 .097 .110 .119 .129 .134 .143 S22 Ang. 63 57 45 41 37 32 30 28 18 12 4 1 -10 Mag. .59 .60 .58 .55 .52 .49 .48 .45 .42 .40 .40 .42 .44 Ang. -21 -28 -39 -50 -62 -72 -84 -98 -115 -136 -159 -176 173