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J309 Datasheet, PDF (4/5 Pages) Fairchild Semiconductor – N-Channel RF Amplifier | |||
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J309, J310
100 k
10 k
1.0 k
Yfs
Yfs
100
1.0 k
VGS(off) = â2.3 V =
10
Yos
VGS(off) = â5.7 V =
100
0.01
1.0
0.1 0.2 0.3 0.5 1.0 2.0 3.0 5.0 10 20 30 50 100
ID, DRAIN CURRENT (mA)
Figure 3. CommonâSource Output
Admittance and Forward Transconductance
versus Drain Current
30
24 VDS = 10 V
ID = 10 mA
TA = 25°C
18
3.0
2.4
Y11
1.8
12
Y21
1.2
6.0
Y22
0.6
Y12
0
100
200 300 500 700 1000
f, FREQUENCY (MHz)
Figure 5. CommonâGate Y Parameter
Magnitude versus Frequency
10
120
RDS
96
7.0
72
Cgs
4.0
48
Cgd
24
1.0
0
0
10 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0
VGS, GATE SOURCE VOLTAGE (VOLTS)
Figure 4. On Resistance and Junction
Capacitance versus GateâSource Voltage
|S21|, |S11|
0.85 0.45
|S12|, |S22|
0.060 1.00
0.79 0.39
0.73 0.33
0.67 0.27
VDS = 10 V
ID = 10 mA
TA = 25°C
S22
S21
0.048 0.98
0.036 0.96
0.024 0.94
S11
0.61 0.21
0.012 0.92
0.55 0.15
100
S12
0.90
200 300
500 700 1000
f, FREQUENCY (MHz)
Figure 6. CommonâGate S Parameter
Magnitude versus Frequency
q21, q11
180° 50°
170° 40°
160° 30°
150° 20°
140° 10°
130° 0°
100
q12, q22
â2 0° 87°
q22
â20 °
â40 ° 86°
q21
â60 °
â80 ° 85°
â100 °
q12
â120 ° 84°
q11
VDS = 10 V
ID = 10 mA
TA = 25°C
â140 °
â160 ° 83°
â180 °
200 300
â200 ° 82°
500 700 1000
f, FREQUENCY (MHz)
Figure 7. CommonâGate Y Parameter
PhaseâAngle versus Frequency
q11, q12
â20 ° 120°
q11
â40 ° 100° q21
q22
â60 ° 80°
q21, q22
0
â20 °
â40 °
â80 ° 60°
q12
â100 ° 40°
â120 ° 20°
100
q21 â60 °
VDS = 10 V
ID = 10 mA
q11
TA = 25°C
200 300 500 700
f, FREQUENCY (MHz)
â80 °
â100 °
1000
Figure 8. S Parameter PhaseâAngle
versus Frequency
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