J308 Datasheet, PDF (2/8 Pages) ON Semiconductor – JFET VHF/UHF Amplifiers

J308 J309 J310
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) (Continued)
Characteristic
Symbol
SMALL– SIGNAL CHARACTERISTICS (continued)
Common–Source Forward Transconductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
Re(yfs)
Common–Gate Input Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
Re(yig)
Common–Source Forward Transconductance
gfs
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
Common–Source Output Conductance
gos
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
Common–Gate Forward Transconductance
gfg
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
Common–Gate Output Conductance
gog
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
Gate–Drain Capacitance
Cgd
(VDS = 0, VGS = –10 Vdc, f = 1.0 MHz)
Gate–Source Capacitance
Cgs
(VDS = 0, VGS = –10 Vdc, f = 1.0 MHz)
FUNCTIONAL CHARACTERISTICS
Noise Figure
NF
(VDS = 10 Vdc, ID = 10 mAdc, f = 450 MHz)
Equivalent Short–Circuit Input Noise Voltage
en
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 Hz)
Min
—
—
8000
10000
8000
—
—
—
—
—
—
—
—
—
—
—
Typ
12
12
—
—
—
—
13000
13000
12000
150
100
150
1.8
4.3
1.5
10
Max
Unit
—
mmhos
—
mmhos
20000
20000
18000
250
µmhos
µmhos
µmhos
—
—
—
µmhos
—
—
—
2.5
pF
5.0
pF
—
dB
—
nVń ^ǸHz
2
Motorola Small–Signal Transistors, FETs and Diodes Device Data