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AST20S Datasheet(PDF) 4 Page - Advanced Semiconductor Business Inc. |
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AST20S Datasheet(HTML) 4 Page - Advanced Semiconductor Business Inc. |
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4 / 33 page  4/33 ASB Inc. · sales@asb.co.kr · Tel: +82-42-528-7223 August 2012 AST20S High Gain, Low Noise Amplifier 1) OIP3 is measured with two tones at an output power of +4 dBm/tone separated by 1MHz. Parameter Symbol Test Conditions MIN. TYP. MAX. Unit Power Gain Gp F = 900 MHz 18 dB Noise Figure NF F = 900 MHz 0.6 dB Input Return Loss RLin F = 900 MHz -13 dB Output Return Loss RLout F = 900 MHz -15 dB 1 dB Gain Compression Output Power Po(1dB) F = 900 MHz 17 dBm 3 rd Intercept Point Output Power 1) OIP3 F = 900 MHz 30 dBm Circuit Current Icc F = 900 MHz Non-RF 48 mA Schematic S-parameters & Noise Figure APPLICATION CIRCUIT 900 MHz +5 V Board Layout (FR4, 23x13 mm 2, 0.8T) Note: 1) the length of the strip line P1 is given as below at the PCB with Er = 4.5 and T = 0.8 mm. *P1 Length: 2.0 mm, Width: 0.3 mm 2) Gain and S11 are in trade-off and varied with the length of P1 0 500 1000 1500 2000 2500 3000 3500 0 1 2 3 4 5 Frequency (MHz) C1=100 pF C3=100 pF RF OUT AST20S C2=10 nF RF IN L2=47 nH R4=130 W *P1 R1=750 W C6=1 uF *P1 VDD R2=5.1 k W L1=12 nH C4=1 nF R3=39 W C5=10 nF 600 700 800 900 1000 1100 1200 0 5 10 15 20 25 30 Frequency (MHz) -40 oc 25 oc 85 oc 600 700 800 900 1000 1100 1200 -30 -25 -20 -15 -10 -5 0 Frequency (MHz) -40 oc 25 oc 85 oc 600 700 800 900 1000 1100 1200 -30 -25 -20 -15 -10 -5 0 Frequency (MHz) -40 oc 25 oc 85 oc Bottom Top |
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