Application Note NJG1131HA8 90MHz BAND APPLICATION The characteristics of 90MHz band have evaluated as follows. The evaluation circuit structure and measured data are reviewed. 2-1 MEASURED DATA1 (DC) General conditions: VDD=5.0V, Ta=+25oC, Zs=Zl=50Ω PARAMETERS DATA UNITS 5.0 V 6.08 mA DATA UNITS fRF 76 ~ 108 MHz Gain 9.56 ~ 10.16 dB 1.17 ~ 1.73 dB +0.7 ~ +0.8 dBm +15.2 ~ +15.8 dBm SYMBOL Supply Voltage VDD Operating Current IDD CONDITIONS RF OFF 2-2 MEASURED DATA2 (RF) General conditions: VDD=5.0V, fRF=76~108MHz, Ta=+25oC, Zs=Zl=50Ω PARAMETERS Frequency Small Signal Gain Noise Figure SYMBOL NF Input Power 1dB Compression P-1dB(IN) Input 3rd Order Intercept Point IIP3 CONDITIONS Exclude PCB, Connector Losses *1 f1=fRF, f2=fRF+100kHz, Pin=-18dBm RF IN VSWR VSWRi 3.02 ~ 3.34 - RF OUT VSWR VSWRo 2.05 ~ 3.28 - *1 Input PCB, connector losses : 0.011dB(at 90MHz) 1 Application Note 2-3 NJG1131HA8 APPLICATION CIRCUIT (Top View) C3 1000pF VDD=5.0V L3 150nH GND VG RFOUT 6 1 C5 7pF Bias Circuit C2 33pF C1 1000pF 2 C4 3pF 2-4 RF OUT 5 1 Pin Index RF IN L2 270nH RFIN L1 180nH 4 GND 3 GND USB6-A8 PCB DESIGN (Top View) PARTS LIST VDD Parts ID C5 C1 RF IN C4 L1 L2 C3 L1~L3 L3 C1~C5 Comment TAIYO-YUDEN (HK1005 Series) MURATA (GRM15 Series) C2 RF OUT PCB (FR-4)： t=0.2mm MICROSTRIP LINE WIDTH =0.4mm (Z0=50Ω) PCB SIZE=16.8mm×16.8mm 2 Application Note NJG1131HA8 2-5-1 CHARACTERISTICS General conditions: VDD=5.0V, fRF=76~108MHz, Ta=+25oC, Zs=Zl=50Ω Gain, IDD vs. Pin Pout vs. Pin fRF=90MHz fRF=90MHz 20 12 16 11 14 0 Pout -10 10 12 9 10 8 8 7 6 IDD 6 -20 4 5 2 P-1dB(IN)=+0.8dBm P-1dB(IN)=+0.8dBm 4 -30 -20 -10 0 10 0 -40 -30 -20 Pin (dBm) -10 0 10 Pin (dBm) Pout, IM3 vs. Pin Gain, NF vs. Frequency f1=90MHz, f2=90.1MHz 20 12 4 Gain -20 Pout Gain (dB) Pout, IM3 (dBm) 0 -40 -60 3.5 8 3 6 2.5 4 2 2 1.5 0 IM3 -80 10 1 NF -2 0.5 IIP3=+15.8dBm -100 -40 -30 -20 -10 0 10 NF (dB) -30 -40 IDD (mA) Gain Gain (dB) Pout (dBm) 10 (Exclude PCB, Connector Losses) -4 20 60 70 80 90 100 110 120 0 130 Frequency (MHz) Pin (dBm) IIP3, OIP3 vs. Frequency P-1dB(IN) vs. Frequency f1=Frequency, f2=f1+100kHz 4 30 3 OIP3 25 P-1dB(IN) IIP3, OIP3 (dBm) P-1dB(IN) (dBm) 2 1 0 -1 20 IIP3 15 -2 -3 -4 60 70 80 90 100 110 Frequency (MHz) 120 130 10 60 70 80 90 100 110 120 130 Frequency (MHz) 3 Application Note NJG1131HA8 2-5-2 CHARACTERISTICS General conditions: VDD=5.0V, fRF=50~1050MHz, Ta=+25oC, Zs=Zl=50Ω S11, S22 S21, S12 VSWR Zin, Zout 4 Application Note NJG1131HA8 2-5-3 CHARACTERISTICS General conditions: VDD=5.0V, fRF=0.05~20GHz, Ta=+25oC, Zs=Zl=50Ω S11, S22 S21, S12 k factor vs. Frequency 50 k factor 40 30 20 10 0 0 5000 10000 15000 20000 Frequency (MHz) 5