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| NJG1505R SPDT SWITCH GaAs MMIC nGENERAL DESCRIPTION NJG1505R is a GaAs SPDT switch MMIC which features high isolation and low loss and ideally suitable for switching transmit/receiving signal of synthesizer. This switch is operated in the wide frequency range from 1MHz to 3GHz at low voltage operation from 2.5V with very small VSP8 package. nPACKAGE OUTLINE NJG1505R nFEATURES lSingle and low control voltage lHigh isolation lLow insertion loss lLow Control current lPackage +2.5~+5.5V 47dB typ. @f=0.05~1GHz, Pin=0dBm 37dB typ. @f=1GHz~2GHz, Pin=0dBm 0.6dB typ. @f=1GHz, Pin=0dBm 0.8dB typ. @f=2GHz, Pin=0dBm 2uA typ. @f=0.05~2.5GHz, Pin=10dBm VSP8 (Mount Size: 4.0x2.9x1.2mm) nPIN CONFIGURATION R TYPE (Top View) 1 Pin Connection 1.VCTR2 8 7 6 5 2.PC 3.GND 4.VCTR1 5.P1 6.GND 7.GND 8.P2 2 3 4 nTRUTH TABLE VCTR1 VCTR2 PC-P1 PC-P2 "H"=VCTR (H), "L"=VCTR (L) H L OFF ON L H ON OFF L L H H - -1- NJG1505R nABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER Input power Control voltage Power dissipation Operating temp. Storage temp. SYMBOL Pin VCTR PD Topr Tstg RATINGS 27 6 320 -30~+85 -40~+150 UNITS dBm V mW C C nELECTRICAL CHARACTERISTICS 1 (TEST CIRCUIT 1: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50ohm, Ta=25C) PARAMETER Control voltage (L) Control voltage (H) Control current Isolation 1 Isolation 2 Insertion loss 1 Insertion loss 2 Pin at 1dB compression point VSWR Switching time SYMBOL VCTR (L) VCTR (H) ICTR ISL1 ISL2 LOSS1 LOSS2 P-1dB VSWR TSW CONDITIONS f=0.05~2.5GHz, Pin=10dBm f=0.05~2.5GHz, Pin=10dBm f=0.05~2.5GHz, Pin=10dBm f=0.05~1GHz, Pin=0dBm f=1GHz~2GHz, Pin=0dBm f=1GHz, Pin=0dBm f=2GHz, Pin=0dBm f=2GHz f=0.05~2.5GHz, ON STATE f=0.05~2.5GHz MIN -0.2 2.5 40 33 19 TYP 0 2.7 2.0 47 37 0.6 0.8 22 1.5 8 MAX 0.2 5.5 4.0 1.0 1.2 1.8 ns UNITS V V uA dB dB dB dB dBm nELECTRICAL CHARACTERISTICS 2 (TEST CIRCUIT 2: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50ohm, Ta=25C) PARAMETER Isolation 3 Insertion loss 3 SYMBOL ISL3 LOSS3 CONDITIONS f=1~100MHz, Pin=0dBm f=1~100MHz, Pin=0dBm MIN TYP 55 0.5 MAX UNITS dB dB -2- NJG1505R nTYPICAL CHARACTERISTICS PC-P1 Isolation (V 0 -10 CTR PC-P2 Isolation (V 0 -10 CTR =0V/2.7V) =0V/2.7V) Isolation:ISL (dB) -20 -30 -40 -50 -60 -70 0 500 1000 1500 2000 2500 3000 Isolation:ISL (dB) -20 -30 -40 -50 -60 -70 0 500 1000 1500 2000 2500 3000 frequency (MHz) frequency (MHz) PC-P1 Insertion Loss 0 PC-P2 Insertion Loss 0.1-3GHz (VCTR =0V/2.7V) 0 0.1-3GHz (VCTR =0V/2.7V) Insertion Loss:LOSS (dB) Insertion Loss:LOSS (dB) -1 -1 -2 -2 -3 -3 -4 -4 -5 0 500 1000 1500 2000 2500 3000 -5 0 500 1000 1500 2000 2500 3000 frequency (MHz) frequency (MHz) -3- NJG1505R nTYPICAL CHARACTERISTICS PC-P1 Isolation 0 PC-P2 Isolation 0 1-100MHz (VCTR=0V/2.7V) 1-100MHz (VCTR=0V/2.7V) Isolation:ISL (dB) Isolation:ISL (dB) -20 -20 -40 -40 -60 -60 -80 -80 -100 1 20 40 60 80 100 -100 1 20 40 60 80 100 frequency (MHz) frequency (MHz) PC-P1 Insertion Loss 0 PC-P2 Insertion Loss 0 1-100MHz (VCTR=0V/2.7V) 1-100MHz (VCTR=0V/2.7V) Insertion Loss:LOSS (dB) -0.5 Insertion Loss:LOSS (dB) 1 20 40 60 80 100 -0.5 -1 -1 -1.5 -1.5 -2 -2 1 20 40 60 80 100 frequency (MHz) frequency (MHz) -4- NJG1505R nTYPICAL CHARACTERISTICS Insertion Loss vs. Input Power (VCTR=0V/2.7V,fin=2GHz) -0.5 -30 Isolation vs. Input Power (VCTR=0V/2.7V,fin =2GHz) -1 Insertion Loss:LOSS (dB) Isolation:ISL (dB) PC-P1 PC-P2 -1.5 -2 -35 PC-P1 PC-P2 -2.5 -40 -3 -3.5 -5 0 5 10 15 20 25 30 Input Power (dBm) -45 -5 0 5 10 15 20 25 30 Input Power (dBm) (PC-P1) Output Power vs. Input Power 30 (VCTR=0V/2.7V,fin =2GHz) 30 Pout P-1 (PC-P2) Output Power vs. Input Power (VCTR=0V/2.7V,fin =2GHz) 25 Output Power (dBm) P-1(in) = 23.53 dBm 25 Output Power (dBm) P-1(in) = 23.38 dBm Pout P-1 20 20 15 15 10 10 15 20 Input Power (dBm) 25 30 10 10 15 20 25 Input Power (dBm) 30 (PC-P1) Control Current vs. Input Power 6 (fin =2GHz) 6 (PC-P2) Control Current vs. Input Power (fin=2GHz) (uA) Control Current:ICTR V =2.7V 5 (uA) 5 4 4 Control Current:ICTR 3 CTR 3 V CTR =2.7V 2 2 V =2.5V 1 V CTR =2.5V 1 CTR 0 -5 0 5 10 15 20 25 30 Input Power (dBm) 0 -5 0 5 10 15 Input Power (dBm) 20 25 30 -5- NJG1505R nTYPICAL CHARACTERISTICS VCTR=2.5V VCTR=2.7V VCTR=3.0V VCTR=2.5V VCTR=2.7V VCTR=3.0V VCTR=2.5V VCTR=2.7V VCTR=3.0V VCTR=2.5V VCTR=2.7V VCTR=3.0V VCTR=2.5V VCTR=2.7V VCTR=3.0V VCTR=2.5V VCTR=2.7V VCTR=3.0V -6- NJG1505R nAPPLICATION CIRCUIT: Single control signal operation by using C-MOS inverter. 10pF 1 PC Zo=50 2 +3.0V 0.01uF 5 7S04 3 510K 56pF 3 4 4 10pF NJG1505R 6 7 8 56pF Zo=50 P2 Zo=50 VC 2 5 56pF P1 VC=3V: PC-P1 VC=0V: PC-P2 ON ON [1]Please connect bypass capacitors to the supply terminals of the C-MOS inverter. [2]In order to stabilize input impedance of inverter, please pull down using 510K resister from the input terminal of the C-MOS inverter to the ground plane. nTEST CIRCUIT VCTL2 (2.7V/0V) C4 Zo=50 Zo=50 1 8 C1 P2 PC C3 2 7 3 VCTL1 (0V/2.7V) C5 6 Zo=50 4 NJG1505R 5 C2 P1 Test circuit 1 Test circuit 2 0.5~2GHz C1~C3 C4, C5 56pF 10pF 1~500MHz 0.1uF 1000pF -7- NJG1505R nRECOMMENDED PCB DESIGN (TOP VIEW) P2 P1 C1 C2 C4 C5 PCB SIZE=30.0x22.5mm C3 VCTL2 VCTL1 PCB: FR-4, t=0.5mm STRIPLINE WIDTH=1mm CAPACITORS: size 1005 Precautions [1] External capacitors should be connected to the input and output RF terminals (P1, P2, PC) to block the DC current. The values of these capacitors depend on RF frequency range. Please use a 0.01uF capacitor at 50 to 100MHz, a 0.1uF capacitor at 100 to 500MHz, and a 56pF capacitor at 500MHz to 2GHz. [2] Decoupling capacitors should be connected to the control terminals (VCTR1, VCTR2) as close as possible. The values of these capacitors should be selected to 0.01uF at 50 to 100MHz, 0.1uF at 100 to 500MHz, and 10pF at 500MHz to 2GHz. Please take care to select these values because the capacitors make switching time long. [3] In order to keep good isolation characteristics, the ground terminals (3, 6, 7 pin) should be connected to ground pattern with wider width as close as possible, and through-hole in the ground plane should also be placed as close as possible. [4] The isolation of PC port to P1 port is greater than the isolation of PC port to P2 port. Please consider this information to create better isolation design. -8- PC NJG1505R nPACKAGE OUTLINE (VSP8) Lead material Lead surface finish Molding material UNIT Weight : Copper : Solder plating : Epoxy resin : mm : 22mg Cautions on using this product This product contains Gallium-Arsenide (GaAs) which is a harmful material. * Do NOT eat or put into mouth. * Do NOT dispose in fire or break up this product. * Do NOT chemically make gas or powder with this product. * To waste this product, please obey the relating law of your country. [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. This product may be damaged with electric static discharge (ESD) or spike voltage. Please handle with care to avoid these damages. -9- |
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