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| NJG1512V SPDT SWITCH GaAs MMIC nGENERAL DESCRIPTION NJG1512V is a GaAs SPDT switch IC featuring high isolation and low insertion loss. This switch allows low operating voltage from 2.5V at the wide frequency range from 1MHz to 3GHz. NJG1512V is suitable to switch the synthesizer signals between transmit and receiving circuit. A very small SSOP package is adopted. nFEATURES lSingle, low voltage control lHigh isolation lLow insertion loss lLow current consumption lPackage nPIN CONFIGURATION V Type (Top View) 1 2 3 4 5 6 7 14 13 12 11 10 9 8 Pin Connection 1. VCTR2 2. GND 3. GND 4. PC 5. GND 6. GND 7. VCTR1 8. P1 9. GND 10. GND 11. GND 12. GND 13. GND 14. P2 nPACKAGE OUTLINE NJG1512V +2.5~+5.5V 46dB typ. @f=0.05~2GHz, Pin =0dBm 0.8dB typ. @f=2GHz, Pin =0dBm 2uA typ. @f=0.05~2.5GHz, Pin =10dBm SSOP14 (Mount Size: 6.4x5.0x1.25mm) nTRUTH TABLE "H"=VCTR (H), "L"=VCTR (L) VCTR1 VCTR2 PC-P1 PC-P2 H L OFF ON L H ON OFF L L *1 H H *1) Combinations of VCTR1/VCTR2=L/L, H/H are not available. -1- NJG1512V nABSOLUTE MAXIMUM RATINGS (Ta=25C, Zs=Zl =50) PARAMETER Input Power Control Voltage Power Dissipation Operating Temp. Storage Temp. SYMBOL Pin VCTR PD Topr Tstg RATINGS 27 6.0 600 -20~+85 -40~+150 UNITS dBm V mW C C nELECTRICAL CHARACTERISTICS 1 (TEST CIRCUIT 1: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50, Ta=25C) PARAMETER Control voltage (L) Control voltage (H) Control current Isolation Insertion loss 1 Insertion loss 2 Pin at 1dB compression point VSWR Switching time SYMBOL VCTR (L) VCTR (H) ICTR ISL1 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=0.05~2.0GHz, Pin =0dBm f=1.0GHz, Pin =0dBm f=2.0GHz, Pin =0dBm f=2.0GHz f=0.05~2.5GHz, ON STATE f=0.05~2.5GHz MIN -0.2 2.5 43 19.0 TYP 0 2.7 2.0 46 0.6 0.8 22.0 1.2 8 MAX 0.2 5.5 4.0 1.0 1.2 1.8 ns UNITS V V uA dB dB dB dBm nELECTRICAL CHARACTERISTICS 2 (TEST CIRCUIT 2: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50, Ta=25C) PARAMETER Isolation 2 Insertion loss 3 SYMBOL ISL2 LOSS3 CONDITIONS f=1~100MHz, Pin =0dBm f=1~100MHz, Pin =0dBm MIN TYP 55 0.5 MAX UNITS dB dB -2- NJG1512V nTYPICAL CHARACTERISTICS P vs. Insertion Loss in P vs. Isolation in -40 (VCTR =0V/2.7V,f in =2GHz) -0.5 (VCTR=0V/2.7V,f in =2GHz) Insertion Loss:LOSS (dB) -1.5 PC-P1 PC-P2 Isolation:ISL (dB) -1 -42 -44 PC-P1 PC-P2 -2 -46 -2.5 -48 -3 -3.5 -5 0 5 10 15 20 25 30 -50 -5 0 5 10 15 20 25 30 Input Power (dBm) Input Power (dBm) (PC-P1) P vs. P in 30 out 30 Pout P-1 (PC-P2) P vs. P in out (VCTR=0V/2.7V, f in=2.0GHz) (VCTR=0V/2.7V, f in=2.0GHz) Pout P-1 Output Power (dBm) 25 P-1(in) = 23.16 dBm Output Power (dBm) 25 P-1(in) = 23.15 dBm 20 20 15 15 10 10 15 20 25 30 10 10 15 20 25 30 Input Power (dBm) Input Power (dBm) (PC-P1) P 6 in vs. I CTR 6 (PC-P2) P vs. I in CTR (f in=2GHz) Control Current:I CTR (uA) (f in=2GHz) Control Current:ICTR (uA) 5 5 4 4 3 V 2 CTR 3 V 2 VCTR=2.5V CTR =2.7V =2.7V 1 V CTR =2.5V 1 0 -5 0 5 10 15 20 25 30 0 -5 0 5 10 15 20 25 30 Input Power (dBm) Input Power (dBm) -3- NJG1512V 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) -20 -40 Isolation:ISL (dB) 0 20 40 60 80 100 -20 -40 -60 -60 -80 -80 -100 -100 0 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) -0.5 -1 -1 -1.5 -1.5 -2 0 20 40 60 80 100 -2 0 20 40 60 80 100 frequency (MHz) frequency (MHz) -4- NJG1512V nTYPICAL CHARACTERISTICS PC-P1 Isolation 0 -10 PC-P2 Isolation 0 -10 0.1-3GHz (VCTR =0V/2.7V) 0.1-3GHz (VCTR =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 0.1-3GHz (VCTR =0V/2.7V) Insertion Loss:LOSS (dB) 0.1-3GHz (VCTR =0V/2.7V) 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) -5- NJG1512V nAPPLICATION CIRCUIT: Single control signal operation by using C-MOS inverter (frequency range: 0.1~2.0GHz) Zo=50 VCTR2 (2.7V/0V) C4 1 2 3 14 C1 P2 13 12 11 10 9 8 NJG1512V C2 Zo=50 Zo=50 PC C3 4 5 6 Test circuit 1 0.5~2GHz Test circuit 2 1~500MHz 0.1uF 1000pF VCTR1 (0V/2.7V) C5 7 P1 C1~C3 C4, C5 56pF 10pF nRECOMMENDED PCB DESIGN (TOP VIEW) P2 P1 C1 C2 PCB SIZE=30.0x22.5mm C4 VCTR2 C3 PC C5 VCTR1 PCB: FR-4, t=0.5mm STRIPLINE WIDTH =1mm CAPACITOR: size 1005 PRECAUTIONS [1] The external capacitors should be connected to the input and output RF terminals (P1, P2, PC) to block DC current. Please use a 0.01uF capacitor at 50 to 100MHz, a 0.1uF capacitor at 100 to 500MHz, and 56pF at 500MHz to 2.0GHz. [2] To avoid coupling between terminals, the capacitors have to be placed at the control terminals (VCTR1 , VCTR2 ) as close as possible. The capacitor values of 0.01uF at 50 to 100MHz, 100pF at 100 to 500MHz, and 10pF at 500MHz to 2GHz are desired. In general, the switching time is depend on the capacitor values, so please be careful choosing capacitor values. [3] For good isolation characteristics, the ground terminals (2, 3, 5, 6, 9~13 pin) should be directly connected to the ground patterns and through-holes as close as possible using relatively wide patterns. -6- NJG1512V nAPPLICATION CIRCUIT 1: Single control signal operation by using C-MOS inverter (frequency: 0.1~2.0GHz) P2 56pF 1 10pF 2 3 PC Z0=50 4 56pF +3.0V 5 0.01uF 6 VC 2 7S04 3 510K 5 4 10pF NJG1512V 7 8 56pF 10 9 11 13 12 14 Z0=50 Z0=50 P1 VC=3.0V: PC-P1 ON VC=0V: PC-P2 ON [1]Please connect the bypass capacitor to the power supply terminal of the C-MOS inverter. [2]In order to stabilize the input impedance of inverter, the input terminal of the C-MOS inverter should be pulled down by the resistor of 510K to the ground plane. -7- NJG1512V nAPPLICATION CIRCUIT 2: High Isolation SPDT Switch (PA to PC, PB to PC, and PA to PB Isolation are greater than 70dB@fin=0.7~2GHz) C8 VCTR1 VCTR1 PA Z 0=50 Z 0=50 C2 P2 C3 4 14 NJG1512V 1 50 Termination VCTR2 C9 C10 50 Termination PB Z0=50 Z0=50 C4 C5 P1 8 P2 PC 4 14 NJG1512V 1 VCTR2 C11 VCTR2 C7 7 VCTR1 8 P1 Z0=50 14 4 C1 7 PC P1 8 PC 7 C6 VCTR1 P2 NJG1512V 1 VCTR2 nPCB DESIGN PC C1 VCTR1 C7 VCTR2 VCTR1 C8 C2 PA C3 C9 C10 VCTR2 C11 C5 PCB SIZE=40.0x30.0mm PCB: FR-4 t=0.5mm STRIPLINE WIDTH=1mm CAPACITOR: size 1005 C1~C5: 56pF C6~C11: 10pF VCTR2 50 VCTR1 C4 50 PB NOTE: As shown in the schematic above, the two 50 ports should be terminate externally. -8- NJG1512V nPACKAGE OUTLINE (SSOP14) Lead material: Copper Lead surface finish: Solder plating Molding material: Epoxy resin UNIT: mm Weight: 66mg 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. This product may be damaged with electric static discharge (ESD) or spike voltage. Please handle with care to avoid these damages. [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. -9- |
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