NJG1697EM1 APPLICATION NOTE of using PCB based on 0.2 mm line and space rule This application note shows an example using PCB based on 0.2 mm line and space rule. Our recommendation PCB adopts 0.1 mm line and space rule in order to achieve its extremely high isolation specified in the datasheet. You can get almost same performance as 0.1 mm rule PCB, except isolation degradation. The electrical characteristics examples are shown as follows: ELECTRICAL CHARACTERISTICS1 (DC CHARACTERISTICS) (General conditions: Ta=+25°C, Zs=Zl=50Ω, VDD=2.7V, VCTL(L)=0V, VCTL(H)=1.8V, with application circuit) MEASUREMENT CONDITIONS UNITS PARAMETERS SYMBOL DATA Supply Voltage VDD Operating Current IDD VDD terminal 2.7 V 13.8 µA Control Voltage (LOW) VCTL(L) VCTL terminal 0 V Control Voltage (HIGH) VCTL(H) VCTL terminal 1.8 V Control Current ICTL 5 µA VCTL(H) =1.8V ELECTRICAL CHARACTERISTICS2 (RF CHARACTERISTICS) (General conditions: Ta=+25°C, Zs=Zl=50Ω, VDD=2.7V, VCTL(L)=0V, VCTL(H)=1.8V, with application circuit) MEASUREMENT CONDITIONS UNITS PARAMETERS SYMBOL DATA Insertion Loss 1 LOSS1 f=0.5GHz, PIN=0dBm 0.52 dB Insertion Loss 2 LOSS2 f=1.0GHz, PIN=0dBm 0.48 dB Insertion Loss 3 LOSS3 f=2.0GHz, PIN=0dBm 0.51 dB Insertion Loss 4 LOSS4 f=2.7GHz, PIN=0dBm 0.52 dB Isolation 1 ISL1 PC-P1, P2 f=0.5GHz, PIN=0dBm 56.0 dB Isolation 2 ISL2 PC-P1, P2 f=1.0GHz, PIN=0dBm 50.5 dB Isolation 3 ISL3 PC-P1, P2 f=2.0GHz, PIN=0dBm 45.2 dB Isolation 4 ISL4 PC-P1, P2 f=2.7GHz, PIN=0dBm 41.4 dB Input power at 0.2dB Compression Point P-0.2dB f=2.0GHz 22.2 dBm VSWR VSWR f=2.0GHz, On port 1.22 - 2 µs Switching time Ver.2014-05-08 TSW 50% VCTL to 10/90% RF -1- NJG1697EM1 <PCB LAYOUT GUIDELINE> PCB PKG Terminal PKG Outline GND Via Hole Diameter: φ= 0.2mm If such high isolation is unnecessary, it is not needed that the ground plane located beneath the device (shown above).In this case, the minimum line and space width of PCB is 0.2mm, and the isolation at 2GHz is about 45dB. -2-