NJG1542HB3 SPDT SWITCH GaAs MMIC n GENERAL DESCRIPTION NJG1542HB3 is a GaAs SPDT switch IC that features small-sized package and low insertion loss , and ideally suited for T/R switch of digital cordless telephone or other digital wireless systems. This switch is operated in the wide frequency range from 100MHz to 2.5GHz at low operating voltage from +2.5V. The ultra small & ultra thin USB8-B3 package is adopted. n FEATURES lLow insertion loss n PACKAGE OUTLINE NJG1542HB3 0.4dB typ. @f=1.0GHz 0.45dB typ. @f=2.0GHz 0.5dB typ. @f=2.5GHz 25dB typ. @f=1.0GHz 20dB typ. @f=2.0GHz 18dB typ. @f=2.5GHz 27dBm typ. @f=2.5GHz 5uA typ. USB8-B3 (Package size: 1.5x1.5x0.75mm) lHigh isolation lPin at 1dB compression point lLow control current lUltra small & ultra thin package n PIN CONFIGURATION USB8-B3 Type (TOP VIEW) Pin connection 1.P1 2.GND 3.P2 4.GND 5.VCTL2 6.PC 7.VCTL1 8.GND 8 1 7 2 6 3 5 4 n TRUTH TABLE “H”=VCTL (H), “L”=VCTL (L) VCTL1 VCTL2 H L L H PC-P1 ON OFF PC-P2 OFF ON Note: Reversed logic version of this device is NJG1600HB3. -1- NJG1542HB3 n ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL CONDITIONS CONDITIONS UNITS VCTL=0V/3V 29 dBm VCTL terminal 7.5 V RF Input Power PIN Control Voltage VCTL Operating Temp. Topr -40~+85 °C Storage Temp. Tstg -55~+150 °C n ELECTRICAL CHARACTERISTICS (General conditions: VCTL (L)=0V, VCTL (H)=3V, ZS=Zl=50Ω, Ta=25°C) MIN TYP MAX UNITS VCTL (L) -0.2 - 0.2 V VCTL (H) 2.5 3.0 6.5 V PARAMETERS SYMBOL Control Voltage (LOW) Control Voltage (HIGH) CONDITIONS Control Current ICTL f=2.5GHz, PIN=18dBm - 5 10 uA Insertion Loss 1 LOSS1 f=1.0GHz, PIN=18dBm - 0.4 0.55 dB Insertion Loss 2 LOSS2 f=2.0GHz, PIN=18dBm - 0.45 0.6 dB Insertion Loss 3 LOSS3 f=2.5GHz, PIN=18dBm - 0.5 0.65 dB Isolation 1 ISL1 f=1.0GHz, PIN=18dBm 22 25 - dB Isolation 2 ISL2 f=2.0GHz, PIN=18dBm 17 20 - dB Isolation 3 ISL2 f=2.5GHz, PIN=18dBm 15 18 - dB 24.5 26 - dBm 25 27 - dBm Pin at 1dB Compression Point 1 Pin at 1dB Compression Point 2 P-1dB(1) f=2.5GHz(V=0V/2.7V) P-1dB(2) f=2.5GHz VSWR VSWR f=0.1~2.5GHz, ON state - 1.2 1.4 f=0.1~2.5GHz - 20 100 Switching time -2- TSW ns NJG1542HB3 nTERMINAL INFORMATION No. SYMBOL 1 P1 2 GND 3 P2 4 GND 5 VCTL2 6 PC 7 VCTL1 8 GND DESCRIPTION RF port. This port is connected with PC port by controlling 7th pin (VCTL(H)) to 2.5~6.5V and 5th pin(VCTL(L)) to -0.2~+0.2V. An external capacitor is required to block the DC bias voltage of internal circuit. (100MHz: 0.01uF, 0.1~0.5GHz: 1000pF, 0.5~2.5GHz: 56pF) Ground terminal. Please connect this terminal with ground plane as close as possible for excellent RF performance. RF port. This port is connected with PC port by controlling 5th pin (VCTL (H)) to 2.5~6.5V and 7th pin(VCTL(L)) to -0.2~+0.2V. An external capacitor is required to block the DC bias voltage of internal circuit. (100MHz: 0.01uF, 0.1~0.5GHz: 1000pF, 0.5~2.5GHz: 56pF) Ground terminal. Please connect this terminal with ground plane as close as possible for excellent RF performance. Control port 2. The voltage of this port controls PC to P2 state. The ‘ON’ and ‘OFF’ state is toggled by controlling voltage of this terminal such as high-state (2.5~6.5V) or low-state (-0.2~+0.2V). The voltage of 7th pin have to be set to opposite state. The bypass capacitor has to be chosen to reduce switching time delay from 10pF~1000pF range. Common RF port. In order to block the DC bias voltage of internal circuit, an external capacitor is required. (100MHz:0.01uF, 0.1~0.5GHz: 1000pF, 0.5~2.5GHz: 56pF) Control port 1. The voltage of this port controls PC to P1 state. The ‘ON’ and ‘OFF’ state is toggled by controlling voltage of this terminal such as high-state (2.5~6.5V) or low-state (-0.2~+0.2V). The voltage of 5 th pin have to be set to opposite state. The bypass capacitor has to be chosen to reduce switching time delay from 10pF~1000pF range. Ground terminal. Please connect this terminal with ground plane as close as possible for excellent RF performance. -3- NJG1542HB3 nELECTRICAL CHARACTERISTICS (0.1~3.0GHz, with application circuit, without DC Blocking Capacitor, Losses of external circuit are excluded) PC-P1 Insertion Loss vs. Frequency PC-P2 Insertion Loss vs. Frequency (PC-P1 ON, VCTL=3.0V/0V, Pin=-10dBm) (PC-P2 ON, VCTL=3.0V/0V, Pin=-10dBm) 0.0 Insertion Loss (dB) Insertion Loss (dB) 0.0 -0.5 -1.0 -1.5 -2.0 0.0 0.5 1.0 1.5 2.0 2.5 -0.5 -1.0 -1.5 -2.0 0.0 3.0 0.5 Frequency (GHz) PC-P1 Isolation vs. Frequency -10 -10 Isolation (dB) Isolation (dB) 0 -20 -30 -40 3.0 -30 -40 0.5 1.0 1.5 2.0 2.5 -50 0.0 3.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) PC-P1 VSWR vs. Frequency PC-P2 VSWR vs. Frequency (VCTL=3.0V/0V,P1 port) (VCTL=3.0V/0V,P2 port) 2.0 2.0 1.8 1.8 1.6 1.6 VSWR VSWR 2.5 -20 Frequency (GHz) 1.4 1.2 1.4 1.2 0.5 1.0 1.5 2.0 Frequency (GHz) -4- 2.0 (PC-P1 ON, VCTL=3.0V/0V, Pin=-10dBm) 0 1.0 0.0 1.5 PC-P2 Isolation vs. Frequency (PC-P2 ON, VCTL=3.0V/0V, Pin=-10dBm) -50 0.0 1.0 Frequency (GHz) 2.5 3.0 1.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) 2.5 3.0 NJG1542HB3 nELECTRICAL CHARACTERISTICS (Application circuit (Parts list 2)) PC-P1 Output Power, ICTL vs. Input Power PC-P1 Insertion Loss vs. Input Power (PC-P1 ON, f=2.5GHz) (PC-P1 ON, f=2.5GHz) -0.5 -1.0 VCTL=2.5V VCTL=2.7V VCTL=3.0V VCTL=5.0V VCTL=6.5V -1.5 VCTL=2.5V VCTL=2.7V VCTL=3.0V VCTL=5.0V VCTL=6.5V 25 30 20 20 15 10 0 10 -2.0 12 14 16 18 20 22 24 26 28 12 30 14 16 18 20 22 24 26 28 30 Input Power (dBm) Input Power (dBm) PC-P1 Insertion Loss vs. Ambient Temperature PC-P2 Isolation vs. Ambient Temperature (PC-P1 ON, f=2.5GHz, Pin=18dBm) (PC-P1 ON, VCTL=3.0V/0V, f=2.5GHz, Pin=18dBm) -0.2 -10 Isolation (dB) Insertion Loss (dB) -0.3 -0.4 -0.5 -0.6 -15 -20 VCTL=2.5V VCTL=2.7V VCTL=3.0V VCTL=5.0V VCTL=6.5V -0.7 -0.8 -50 0 50 -25 -50 100 o 50 100 Ambient Temperature ( C) ICTL vs. Ambient Temperature PC-P1 P-1dB vs. Ambient Temperature (PC-P1 ON, f=2.5GHz, Pin=18dBm) (PC-P1 ON, f=2.5GHz) 20 30 28 15 ICTL (uA) P-1dB (dBm) 0 o Ambient Temperature ( C) 26 24 VCTL=2.5V VCTL=2.7V VCTL=3.0V VCTL=5.0V VCTL=6.5V 10 5 VCTL=2.5V VCTL=2.7V 22 VCTL=3.0V 20 -50 0 50 100 o Ambient Temperature ( C) 0 -50 0 50 100 o Ambient Temperature ( C) -5- ICTL (uA) Output Power (dBm) Insertion Loss (dB) 40 30 0.0 NJG1542HB3 nAPPLICATION CIRCUIT GND 8 P1 C2 1 7 2 6 C4 VCTL1 (2.7V/0V) C1 PC GND R1 P2 C3 3 5 4 C5 VCTL2 (0V/2.7V) GND nRECOMMENDED PCB DESIGN (TOP VIEW) PCB:FR-4, t=0.5mm Capacitor: Size 1005 Strip Line Width=1.0mm PCB Size: 19.4x14.0mm Circuit losses including losses of capacitors and connectors freq (GHz) 0.8 1.0 1.5 1.8 2.0 2.5 Loss (dB) 0.11 0.12 0.16 0.19 0.21 0.27 nPARTS LIST No. Parts list 1 Parts list 2 C1~C3 C4,C5 f=0.1~0.5GHz 1000pF 1000pF f=0.5~2.0GHz 56pF 1000pF PRECAUTIONS [1] The DC blocking capacitors have to be placed at RF terminal of P1, P2 and PC. [2] To reduce stlipline influence on RF characteristics, please locate bypass capacitors (C4, C5) close to each terminals. [3] To avoid degradation of isolation or high power characteristics, please layout ground pattern right under this IC. -6- NJG1542HB3 nPACKAGE OUTLINE (USB8-B3) (TOP VIEW) (SIDE VIEW) 1pin INDEX 0.038±0.01 0.14±0.05 0.75±0.05 1.5±0.05 0.5±0.1 0.5±0.1 :Au :FR5 :Epoxy resin :mm :4mg R0.075 0.2±0.1 3 0.3±0.05 8 4 0.2±0.1 TERMINAL TREAT PCB Molding material UNIT WEIGHT 2 0.3±0.1 1.5±0.05 1 7 6 5 0.2±0.05 0.2±0.05 0.4±0.1 (BOTTOM VIEW) 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. -7-