J308_06 Datasheet, PDF (2/6 Pages) ON Semiconductor – JFET VHF/UHF Amplifiers

J308
Characteristic
SMALL−SIGNAL CHARACTERISTICS
Common−Source Input Conductance
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 100 MHz)
J308
J309
J310
Common−Source Output Conductance
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 100 MHz)
Common−Gate Power Gain
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 100 MHz)
1. Pulse Test: Pulse Width v 300 μs, Duty Cycle v 3.0%.
SMALL−SIGNAL CHARACTERISTICS (continued)
Common−Source Forward Transconductance
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 100 MHz)
Common−Gate Input Conductance
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 100 MHz)
Common−Source Forward Transconductance
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
Common−Source Output Conductance
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 1.0 kHz)
Common−Gate Forward Transconductance
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
Common−Gate Output Conductance
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
Gate−Drain Capacitance
(V_DS = 0, V_GS = −10 Vdc, f = 1.0 MHz)
Gate−Source Capacitance
(V_DS = 0, V_GS = −10 Vdc, f = 1.0 MHz)
FUNCTIONAL CHARACTERISTICS
Noise Figure
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 450 MHz)
Equivalent Short−Circuit Input Noise Voltage
(V_DS = 10 Vdc, I_D = 10 mAdc, f = 100 Hz)
Symbol
Min
Typ
Max
Unit
Re(y_is)
mmhos
—
0.7
—
—
0.7
—
—
0.5
—
Re(y_os)
—
0.25
—
mmhos
G_pg
—
16
—
dB
Re(y_fs)
Re(y_ig)
g_fs
g_os
g_fg
g_og
C_gd
C_gs
—
12
—
mmhos
—
12
—
mmhos
μmhos
8000
—
20000
10000
—
20000
8000
—
18000
—
—
250
μmhos
μmhos
—
13000
—
—
13000
—
—
12000
—
μmhos
—
150
—
—
100
—
—
150
—
—
1.8
2.5
pF
—
4.3
5.0
pF
NF
—
1.5
—
dB
e_n
—
10
—
nVń ^ǸHz
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