N-Channel JFET
Low Noise Amplifier
2N4338 – 2N4341
FEATURES
Exceptionally High Figure of Merit
Radiation Immunity
Extremely Low Noise and Capacitance
High Input Impedance
APPLICATIONS
Low-level Choppers
Data Switches
Multiplexers and Low Noise Amplifiers
ABSOLUTE MAXIMUM RATINGS
(TA = 25
oC unless otherwise noted)
Gate-Source or Gate-Drain Voltage . . . . . . . . . . . . . . . . -50V
Gate Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Storage Temperature Range . . . . . . . . . . . . . -65
oC to +200oC
Operating Temperature Range . . . . . . . . . . . -55
oC to +175oC
Lead Temperature (Soldering, 10sec) . . . . . . . . . . . . . +300
oC
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mW
Derate above 25
oC . . . . . . . . . . . . . . . . . . . . . . . 2.0mW/oC
NOTE: Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at these or
any other conditions above those indicated in the operational sections
of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
ORDERING INFORMATION
Part
Package
Temperature Range
2N4338-41
Hermetic TO-18
-55
oC to +175oC
X2N4338-41
Sorted Chips in Carriers
-55
oC to +175oC
LLC
PIN CONFIGURATION
S
TO-18
G,C
D
ELECTRICAL CHARACTERISTICS (TA = 25
oC unless otherwise specified)
SYMBOL
PARAMETER
2N4338
2N4339
2N4340
2N4341
UNITS
TEST CONDITIONS
MIN MAX MIN MAX MIN MAX MIN MAX
IGSS
Gate Reverse Current
-0.1
nA
VGS = -30V, VDS = 0
TA = 150
oC
-0.1
A
BVGSS
Gate-Source Breakdown Voltage
-50
V
IG = -1
A, VDS = 0
VGS(off)
Gate-Source Cutoff Voltage
-0.3
-1
-0.6
-1.8
-1
-3
-2
-6
VDS = 15V, ID = 0.1
A
ID(off)
Drain Cutoff Current
0.05
(-5)
0.05
(-5)
0.05
(-5)
0.07
(-10)
nA
(V)
VDS = 15V,
VGS = ( )
IDSS
Saturation Drain Current (Note 2)
0.2
0.6
0.5
1.5
1.2
3.6
3
9
mA
VDS = 15V, VGS = 0
gfs
Common-Source Forward
Transconductance (Note 2)
600 1800 800 2400 1300 3000 2000 4000
S
VDS = 15V,
VGS = 0
f = 1kHz
gos
Common-Source Output Conductance
5
15
30
60
rDS(on)
Drain-Source ON Resistance
2500
1700
1500
800
ohm
VDS = 0, IDS = 0
Ciss
Common-Source Input Capacitance
7777
pF
VDS = 15V,
VGS = 0 (Note 1)
f = 1MHz
Crss
Common-Source Reverse Transfer
Capacitance
3333
NF
Noise Figure (Note 1)
1111
dB
VDS = 15V,
VGS = 0
Rgen = 1meg,
BW = 200Hz
f = 1kHz
NOTES: 1. For design reference only, not 100% tested.
2. Pulse test duration 2ms (non-JEDEC Condition).
5010
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT CA 94539 510-656-2900 PHONE, 510-651-1076 FAX
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