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Datasheet File OCR Text: |
BAR81... Silicon RF Switching Diode Designed for use in shunt configuration in high performance RF switches High shunt signal isolation Low shunt insertion loss Optimized for short - open transformation using lines BAR81W 4 3 1 2 Type BAR81W Package SOT343 Configuration single shunt-diode LS(nH) Marking 0.15* BBs * series inductance chip to ground Maximum Ratings at TA = 25C, unless otherwise specified Parameter Diode reverse voltage Forward current Total power dissipation Junction temperature Operating temperature range Storage temperature Thermal Resistance Parameter Junction - soldering point1) 1For Symbol VR IF Ptot Tj Top Tstg Symbol RthJS Value 30 100 100 150 -55 ... 125 -55 ... 150 Unit V mA mW C calculation of RthJA please refer to Application Note Thermal Resistance 1 Ts 138C Value 120 Unit K/W Dec-20-2002 BAR81... Electrical Characteristics at TA = 25C, unless otherwise specified Parameter DC Characteristics Reverse current VR = 20 V Forward voltage IF = 100 mA AC Characteristics Diode capacitance VR = 1 V, f = 1 MHz VR = 3 V, f = 1 MHz Forward resistance IF = 5 mA, f = 100 MHz IF = 10 mA, IR = 6 mA, measured at IR = 3 mA, I-region width Shunt insertion loss1) VR = 3 V, f = 1.89 GHz Shunt isolation1) IF = 10 mA , f = 1.89 GHz Configuration of the shunt-diode - A perfect ground is essential for optimum isolation - The anode pins should be used as passage for RF Symbol min. IR VF - Values typ. 0.93 max. 20 1 Unit nA V CT rf rr pF 0.6 0.57 0.7 80 1 0.9 1 - 1For more information please refer to Application Note 049. RL = 100 2 Charge carrier life time - WI |S21|2 |S21|2 - 3.5 0.7 30 - Dec-20-2002 ns m dB - BAR81... Diode capacitance CT = f = Parameter 1 F 10 4 KOhm 100 MHz 10 3 0.8 CT 0.7 Rp 10 2 1 GHz 1.8 GHz 0.6 10 1 1 MHz ... 1.8 GHz 0.5 0.4 10 0 0.3 10 -1 0 0.2 0 2 4 6 8 10 12 14 16 V 20 2 4 6 8 10 12 14 16 VR f = 100MHz 10 1 TA = Parameter 10 0 A 10 -1 Ohm 10 -2 10 0 IF rf 10 -3 10 -4 10 -5 10 -1 10 -2 10 -1 10 0 10 1 mA 10 2 10 -6 0 0.2 0.4 IF 3 Forward resistance rf = (I F) Forward current IF = (VF) -40 C 25 C 85 C 125 C 0.6 0.8 V Dec-20-2002 (VR ) Reverse parallel resistance RP = (VR ) f = Parameter V 20 VR 1.2 VF BAR81... Forward current IF = BAR81W 120 mA 100 90 80 BAR81W 10 3 K/W 70 60 50 40 30 20 10 0 0 15 30 45 60 75 90 105 120 C 150 RthJS 10 2 IF 10 1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 D=0 -5 -4 -3 -2 0 10 0 -6 10 10 10 10 10 TS Permissible Pulse Load 10 2 IFmax/IFDC - 10 1 10 0 -6 10 10 IFmax / IFDC = (tp ) BAR81W D=0 0.005 0.01 0.02 0.05 0.1 0.2 0.5 -5 10 -4 10 -3 10 -2 s 10 0 tP 4 Dec-20-2002 (TS ) Permissible Puls Load RthJS = (tp ) s 10 tP |
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