TetraFET D1040UK METAL GATE RF SILICON FET MECHANICAL DATA B C (2 pls) 2 G (typ) 3 1 H P (2 pls) A D 4 5 GOLD METALLISED MULTI-PURPOSE SILICON DMOS RF FET 400W – 28V – 108MHz PUSH–PULL E (4 pls) F FEATURES I • SIMPLIFIED AMPLIFIER DESIGN N O M J K • SUITABLE FOR BROAD BAND APPLICATIONS DR PIN 1 SOURCE (COMMON) PIN 2 DRAIN 1 PIN 3 DRAIN 2 PIN 4 GATE 2 PIN 5 GATE 1 DIM A B C D E F G H I J K M N O P Millimetres 19.05 10.77 45° 9.78 5.71 27.94 1.52R 10.16 22.22 0.13 2.72 1.70 5.08 34.03 1.61R Tol. 0.50 0.13 5° 0.13 0.13 0.13 0.13 0.13 MAX 0.02 0.13 0.13 0.50 0.13 0.08 Inches 0.75 0.424 45° 0.385 0.225 1.100 0.060R 0.400 0.875 0.005 0.107 0.067 0.200 1.340 0.064R Tol. 0.020 0.005 5° 0.005 0.005 0.005 0.005 0.005 MAX 0.001 0.005 0.005 0.020 0.005 0.003 • LOW Crss • SIMPLE BIAS CIRCUITS • LOW NOISE • HIGH GAIN – 16 dB MINIMUM APPLICATIONS • VHF FM COMMUNICATIONS ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated) PD BVDSS BVGSS ID(sat) Tstg Tj Power Dissipation Drain – Source Breakdown Voltage * Gate – Source Breakdown Voltage * Drain Current * Storage Temperature Maximum Operating Junction Temperature 438W 70V ±20V 35A –65 to 150°C 200°C * Per Side Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: [email protected] Document Number 5460 Issue 3 D1040UK ELECTRICAL CHARACTERISTICS (Tcase = 25°C unless otherwise stated) Parameter Test Conditions Min. Typ. Max. Unit PER SIDE BVDSS IDSS Drain–Source Breakdown Voltage Zero Gate Voltage Drain Current VGS = 0 ID = 100mA VDS = 28V VGS = 0 7 mA 7 mA 7 V IGSS Gate Leakage Current VGS = 20V VDS = 0 VGS(th) Gate Threshold Voltage* ID = 10mA VDS = VGS gfs Forward Transconductance* VDS = 10V ID = 7A 70 1 V 5.6 S 16 dB 65 % 20:1 — TOTAL DEVICE GPS Common Source Power Gain PO = 400W h Drain Efficiency VDS = 28V VSWR Load Mismatch Tolerance f = 108MHz IDQ = 2A PER SIDE Ciss Input Capacitance VDS = 28V VGS = –5V f = 1MHz 380 pF Coss Output Capacitance VDS = 28V VGS = 0 f = 1MHz 180 pF Crss Reverse Transfer Capacitance VDS = 28V VGS = 0 f = 1MHz 10 pF * Pulse Test: Pulse Duration = 300 ms , Duty Cycle £ 2% HAZARDOUS MATERIAL WARNING The ceramic portion of the device between leads and metal flange is beryllium oxide. Beryllium oxide dust is highly toxic and care must be taken during handling and mounting to avoid damage to this area. THESE DEVICES MUST NEVER BE THROWN AWAY WITH GENERAL INDUSTRIAL OR DOMESTIC WASTE. THERMAL DATA RTHj–case Thermal Resistance Junction – Case Max. 0.4°C / W Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: [email protected] Document Number 5460 Issue 3 D1040UK 23 600 22 21 400 Class C 32V Class A/B 32V Class C 28V Class A/B 28V f = 108MHz 300 200 100 0 Gain dB Pout (W) 500 20 19 17 16 15 0 2 4 6 8 Pin (W) 10 12 14 Class C 32V Class A/B 32V Class C 28V Class A/B 28V f = 108MHz 18 16 0 50 Figure 1 Output Power vs. Input Power 100 150 200 250 300 350 400 450 500 550 Pout (W) Figure 2 Gain vs. Output Power 90 Efficiency % 80 70 OPTIMUM SOURCE AND LOAD IMPEDANCE 60 50 Class C 32V Class A/B 32V Class C 28V Class A/B 28V f = 108MHz 40 30 20 Frequency MHz ZS W ZL W 108 1.5 + j3.5 1.5 - j0.4 10 0 0 100 200 300 Pout (W) 400 500 600 Figure 3 Efficiency vs. Output Power APPLICATION NOTE In applications where a constant output power is required irrespective of variations in temperature or supply voltage etc. then a feedback loop must be incorporated whereby the drain voltage is adjusted to maintain constant output power. Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: [email protected] Document Number 5460 Issue 3 D1040UK 50 45 40 Vg=13 V Vg=12 V Vg=11 V Vg=10 V Vg=9V Vg=8 V Vg=7 V Vg=6 V Vg=5 V 35 30 IDS (A) 25 20 15 10 5 0 0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 VDS (V) Figure 4 – Typical IV Characteristics. Figure 5 – Typical CV Characteristics. Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: [email protected] Document Number 5460 Issue 3 D1040UK Drain Bias 100uF Gate Bias 100nF 100K 1nF 100nF L3 10K 100pF//68pF RF I/P TX1 1nF L1 10 1nF D1040UK 43//43//43pF 22pF 5-60pF 10 22pF 120pF 5-60pF 5-60pF 5-60pF 5-60pF 10K 22pF 100pF//68pF T1 T2 T3 T4 L4 10 T5 T6 TL1 15//15//15pF T7 RF O/P 10 22pF 43//43//43pF T8 1nF L2 1nF 100uF 100nF Drain Bias D1040UK 108MHz Test Fixture Substrate 1.6mm PTFE/glass er=2.2 TX1 TL1 L1, L2 L3, L4 4 turns 50W coaxial cable wound around toroid 160mm UT85 semi-rigid coax 1 turn 1.2mm dia wire on Siemens B62152A1X1 2 hole core 4 turns 1.2mm dia wire, 10mm internal dia T8 4.8mm wide, all other lines 6mm wide T1 50mm T2 40mm T3 10mm T4 14mm T5 8mm T6 40mm T7 66mm T8 160mm Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: [email protected] Document Number 5460 Issue 3