2N4338 Datasheet, PDF (4/6 Pages) Calogic, LLC – N-Channel JFET Low Noise Amplifier

2N4338/4339/4340/4341
Vishay Siliconix
TYPICAL CHARACTERISTICS (T_A = 25_C UNLESS OTHERWISE NOTED)
On-Resistance and Output Conductance
vs. Gate-Source Cutoff Voltage
1500
10
1200
g_os
8
Common-Source Forward Transconductance
vs. Drain Current
2
V_GS(off) = –1.5 V
V_DS = 10 V
f = 1 kHz
1.6
900
r_DS
6
1.2
T_A = –55_C
600
4
0.8
25_C
300
0
0
400
320
r_DS @ I_D = 100 mA, V_GS = 0 V
g_os @ V_DS= 10 V, V_GS = 0 V, f = 1 kHz
–1
–2
–3
–4
V_GS(off) – Gate-Source Cutoff Voltage (V)
2
0
–5
Output Characteristics
V_GS(off) = –0.7 V
V_GS = 0 V
240
–0.1 V
160
–0.2 V
–0.3 V
80
–0.5 V
–0.4 V
0
0
4
8
12
16
20
V_DS – Drain-Source Voltage (V)
Output Characteristics
300
V_GS(off) = –0.7 V
240
V_GS = 0 V
–0.1 V
180
120
60
0
0
–0.2 V
–0.3 V
–0.4 V
–0.5 V
0.1
0.2
0.3
0.4
0.5
V_DS – Drain-Source Voltage (V)
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7-4
0.4
125_C
0
0.01
0.1
1
I_D – Drain Current (mA)
Output Characteristics
2
V_GS(off) = –1.5 V
1.6
V_GS = 0 V
1.2
–0.3 V
0.8
–0.6 V
0.4
–1.2 V
–0.9 V
0
0
4
8
12
16
20
V_DS – Drain-Source Voltage (V)
Output Characteristics
1
V_GS(off) = –1.5 V
0.8
V_GS = 0 V
0.6
–0.3 V
–0.6 V
0.4
0.2
0
0
–0.9 V
–1.2 V
0.2
0.4
0.6
0.8
1.0
V_DS – Drain-Source Voltage (V)
Document Number: 70240
S-04028—Rev. E, 04-Jun-01