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. nFEATURES lSingle and low control voltage lHigh isolation nPACKAGE OUTLINE NJG1505R +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) lLow insertion loss lLow Control current lPackage nPIN CONFIGURATION Pin Connection R TYPE (Top View) 1.VCTR2 2.PC 8 1 3.GND 2 7 3 6 4 5 4.VCTR1 5.P1 6.GND 7.GND 8.P2 nTRUTH TABLE “H”=VCTR (H), “L”=VCTR (L) VCTR1 H L L H VCTR2 L H L H PC-P1 OFF ON - - PC-P2 ON OFF - - -1- NJG1505R nABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATINGS UNITS Pin 27 dBm VCTR 6 V Power dissipation PD 320 mW Operating temp. Topr -30~+85 °C Storage temp. Tstg -40~+150 °C Input power Control voltage nELECTRICAL CHARACTERISTICS 1 (TEST CIRCUIT 1: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50ohm, Ta=25°C) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Control voltage (L) VCTR (L) f=0.05~2.5GHz, Pin=10dBm -0.2 0 0.2 V Control voltage (H) VCTR (H) f=0.05~2.5GHz, Pin=10dBm 2.5 2.7 5.5 V Control current ICTR f=0.05~2.5GHz, Pin=10dBm - 2.0 4.0 uA Isolation 1 ISL1 f=0.05~1GHz, Pin=0dBm 40 47 - dB Isolation 2 ISL2 f=1GHz~2GHz, Pin=0dBm 33 37 - dB Insertion loss 1 LOSS1 f=1GHz, Pin=0dBm - 0.6 1.0 dB Insertion loss 2 Pin at 1dB compression point LOSS2 f=2GHz, Pin=0dBm - 0.8 1.2 dB 19 22 - dBm VSWR VSWR f=0.05~2.5GHz, ON STATE - 1.5 1.8 f=0.05~2.5GHz - 8 - Switching time P-1dB TSW f=2GHz ns nELECTRICAL CHARACTERISTICS 2 (TEST CIRCUIT 2: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50ohm, Ta=25°C) PARAMETER Isolation 3 Insertion loss 3 -2- SYMBOL CONDITIONS MIN TYP MAX UNITS ISL3 f=1~100MHz, Pin=0dBm - 55 - dB LOSS3 f=1~100MHz, Pin=0dBm - 0.5 - dB NJG1505R nTYPICAL CHARACTERISTICS PC-P1 Isolation CTR =0V/2.7V) (V 0 0 -10 -10 Isolation:ISL (dB) Isolation:ISL (dB) (V PC-P2 Isolation -20 -30 -40 -50 -60 =0V/2.7V) -20 -30 -40 -50 -60 -70 -70 0 500 1000 1500 2000 2500 3000 0 500 1000 1500 2000 2500 frequency (MHz) frequency (MHz) PC-P1 Insertion Loss PC-P2 Insertion Loss 0.1-3GHz (VCTR =0V/2.7V) 0.1-3GHz (VCTR =0V/2.7V) 3000 0 Insertion Loss:LOSS (dB) 0 Insertion Loss:LOSS (dB) CTR -1 -2 -3 -4 -1 -2 -3 -4 -5 -5 0 500 1000 1500 2000 frequency (MHz) 2500 3000 0 500 1000 1500 2000 2500 3000 frequency (MHz) -3- NJG1505R nTYPICAL CHARACTERISTICS 0 PC-P1 Isolation PC-P2 Isolation 1-100MHz (VCTR=0V/2.7V) 1-100MHz (VCTR=0V/2.7V) 0 Isolation:ISL (dB) Isolation:ISL (dB) -20 -40 -60 -20 -40 -60 -80 -80 -100 -100 1 20 40 60 80 1 100 20 frequency (MHz) PC-P1 Insertion Loss Insertion Loss:LOSS (dB) Insertion Loss:LOSS (dB) -0.5 -1 -1.5 -2 20 40 60 frequency (MHz) -4- 80 100 1-100MHz (VCTR=0V/2.7V) 0 1 60 PC-P2 Insertion Loss 1-100MHz (VCTR=0V/2.7V) 0 40 frequency (MHz) 80 100 -0.5 -1 -1.5 -2 1 20 40 60 frequency (MHz) 80 100 NJG1505R nTYPICAL CHARACTERISTICS Isolation vs. Input Power Insertion Loss vs. Input Power (VCTR=0V/2.7V,fin=2GHz) (VCTR=0V/2.7V,fin =2GHz) -30 -0.5 PC-P1 PC-P2 -1.5 Isolation:ISL (dB) Insertion Loss:LOSS (dB) -1 -2 -2.5 -35 PC-P1 PC-P2 -40 -3 -3.5 -45 -5 0 5 10 15 20 25 -5 30 0 5 Input Power (dBm) Pout P-1 30 Pout P-1 25 Output Power (dBm) Output Power (dBm) 25 30 P-1(in) = 23.53 dBm 20 15 10 P-1(in) = 23.38 dBm 20 15 10 10 15 20 25 30 10 15 Input Power (dBm) (PC-P1) Control Current vs. Input Power (fin=2GHz) (uA) Control Current:ICTR 4 3 CTR =2.7V 2 1 V CTR 30 6 5 V 20 25 Input Power (dBm) (PC-P2) Control Current vs. Input Power (fin =2GHz) 6 (uA) 20 (VCTR=0V/2.7V,fin =2GHz) (VCTR=0V/2.7V,fin =2GHz) 25 Control Current:ICTR 15 (PC-P2) Output Power vs. Input Power (PC-P1) Output Power vs. Input Power 30 10 Input Power (dBm) 5 4 3 =2.7V V =2.5V CTR 1 =2.5V V 2 CTR 0 0 -5 0 5 10 15 Input Power (dBm) 20 25 30 -5 0 5 10 15 Input Power (dBm) 20 25 30 -5- NJG1505R nTYPICAL CHARACTERISTICS VCTR=2.5V VCTR=2.7V VCTR=3.0V -6- 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 NJG1505R nAPPLICATION CIRCUIT: Single control signal operation by using C-MOS inverter. 10pF PC 8 2 7 3 6 Zo=50Ω P2 Zo=50Ω P1 56pF Zo=50Ω 56pF +3.0V 0.01uF VC 1 4 5 2 5 4 7S04 56pF 10pF NJG1505R 3 VC=3V: PC-P1 VC=0V: PC-P2 510KΩ 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 510KΩ resister from the input terminal of the C-MOS inverter to the ground plane. nTEST CIRCUIT Zo=50Ω VCTL2 (2.7V/0V) 1 C4 P2 8 C1 Zo=50Ω PC 2 7 3 6 4 5 C3 VCTL1 (0V/2.7V) C5 Zo=50Ω P1 C2 NJG1505R Test circuit 1 Test circuit 2 0.5~2GHz 1~500MHz C1~C3 56pF 0.1uF C4, C5 10pF 1000pF -7- NJG1505R nRECOMMENDED PCB DESIGN P2 P1 (TOP VIEW) C5 C2 C4 C1 VCTL2 C3 PCB SIZE=30.0x22.5mm VCTL1 PCB: FR-4, t=0.5mm PC 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- NJG1505R nPACKAGE OUTLINE (VSP8) Lead material Lead surface finish Molding material UNIT Weight 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. : Copper : Solder plating : Epoxy resin : mm : 22mg [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-