Application Note 1. VCTL(H)=1.8V / f=0.5 - 3.0GHz NJG1801K75 APPLICATION 1-1 SUMMARY This is VCTL(H)=1.8V / f=0.5 - 3.0GHz application note of NJG1801K75. This application note shows the typical electrical characteristics and application circuit. 1-2 MEASURED DATA General conditions: VCTL(L)=0V, VCTL(H)=1.8V, Ta=+25°C, ZS=Zl=50Ω PARAMETERS SYMBOL CONDITIONS DATA UNITS VCTL(H)=1.8V, No RF input 2.7 µA Control Current ICTL Insertion loss1 LOSS1 f=0.5GHz 0.30 dB Insertion loss2 LOSS2 f=1.0GHz 0.31 dB Insertion loss3 LOSS3 f=2.0GHz 0.33 dB Insertion loss4 LOSS4 f=2.7GHz 0.34 dB Isolation1 ISL1 f=0.5GHz 34.8 dB Isolation2 ISL2 f=1.0GHz 30.0 dB Isolation3 ISL3 f=2.0GHz 27.5 dB Isolation4 ISL4 f=2.7GHz 27.6 dB Return loss1 RL1 f=0.5GHz 18.9 dB Return loss2 RL2 f=1.0GHz 23.8 dB Return loss3 RL3 f=2.0GHz 28.3 dB Return loss4 RL4 f=2.7GHz 29.9 dB Input power at 1dB compression point1 P-1dB1 f=1.0GHz 24.8 dBm Input power at 1dB compression point2 P-1dB2 f=2.0GHz 24.0 dBm 50% VCTL to 10%/90% RF 272 ns Switching time TSW 1 Application Note 1-3 NJG1801K75 APPLICATION CIRCUIT Top View P1 VCTL1 1 C1 6 C4 PC C2 P2 1-4 2 5 3 4 C3 C5 VCTL2 PCB DESIGN GND 1pin mark C1 C2 P2 P1 PCB: FR-4, t=0.2mm Capacitor Size: 0603 (0.6 x 0.3 mm) Strip Line Width: 0.4mm PCB Size: 19.4 x 14.0mm Through Hole Diameter: 0.2mm ■ Loss of PCB, capacitor and connectors C5 C3 VCTL2 C4 Frequency (GHz) Loss (dB) 0.5 0.15 1.0 0.17 2.0 0.26 2.7 0.34 VCTL1 PC PARTS LIST Parts ID Constants Comment C1 to C3 56pF C4 to C5 10pF Murata MFG (GRM03 series) 2 Application Note NJG1801K75 1-5-1 Characteristics (PC-P1 ON, V CTL(H) =1.8V, V CTL(L) (PC-P2 ON, V CTL(L) =0V) -0.4 -8 -0.4 -8 -0.6 -12 -0.6 -12 -0.8 -16 -0.8 -16 -1.0 -20 -1.0 -20 -1.2 -24 -1.2 -24 -1.4 -28 -1.4 -28 PC-P2 ISL P1-P2 ISL -1.8 -2.0 0.0 0.5 1.0 1.5 2.0 Insertion Loss (dB) -0.2 Isolation (dB) -4 PC-P1 LOSS -1.6 -32 -1.6 -36 -1.8 -40 3.0 2.5 0 CTL(H) -2.0 0.0 0.5 1.0 1.5 2.0 -36 -40 3.0 2.5 Frequency (GHz) =1.8V, V CTL(L) Return Loss vs Frequency =0V) (PC-P2 ON, V 0 -5 -10 -10 Return Loss (dB) -5 -15 -20 -25 -30 -35 P1 port PC port -40 -4 -32 PC-P1 ISL P1-P2 ISL Return Loss vs Frequency (PC-P1 ON, V 0 PC-P2 LOSS Frequency (GHz) =1.8V, V CTL(L) =0V) -15 -20 -25 -30 -35 P2 port PC port -40 -45 CTL(H) -45 -50 0.0 0.5 1.0 1.5 2.0 2.5 -50 0.0 3.0 0.5 1.0 Frequency (GHz) Loss, ISL vs Input Power CTL(H) CTL(L) (PC-P2 ON, V f=1.0GHz f=1.0GHz f=2.0GHz f=2.0GHz -0.2 0 0.0 -4 -0.2 -0.4 -8 -0.6 -12 -0.8 -16 -1.0 -20 -1.2 -24 -1.4 -28 -1.6 -32 -1.8 -2.0 10 12 14 16 18 20 22 24 2.0 2.5 3.0 Loss, ISL vs Input Power =0V) 26 Input Power (dBm) 28 30 32 PC-P2 Insertion Loss (dB) 0.0 =1.8V, V CTL(H) =1.8V, V CTL(L) =0V) 0 f=1.0GHz f=1.0GHz f=2.0GHz f=2.0GHz -4 -0.4 -8 -0.6 -12 -0.8 -16 -1.0 -20 -1.2 -24 -1.4 -28 -1.6 -32 -36 -1.8 -36 -40 -2.0 PC-P2 Isolation (dB) (PC-P1 ON, V 1.5 Frequency (GHz) PC-P1 Isolation (dB) Return Loss (dB) =1.8V, V 0.0 -0.2 PC-P1 Insertion Loss (dB) CTL(H) 0 0.0 Insertion Loss (dB) Loss, ISL vs Frequency =0V) Isolation (dB) Loss, ISL vs Frequency -40 10 12 14 16 18 20 22 24 26 28 30 32 Input Power (dBm) 3