Datasheet

AD8139
Rev. B | Page 17 of 24
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
–40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
V
OCM
BIAS CURRENT (µA)
0
4679-063
Figure 55. V
OCM
Bias Current vs. Temperature
–6
–5 –4 –3 –2 –1 0 1 2 3 4 5
–4
–2
0
2
4
6
V
OCM
(V)
V
OCM
BIAS CURRENT (µA)
V
S
= ±5V
V
S
= +5V
0
4679-074
Figure 56. V
OCM
Bias Current vs. V
OCM
Input Voltage
TEST CIRCUITS
R
G
= 200Ω
60.4Ω
60.4Ω
50Ω
V
TEST
TEST
SIGNAL
SOURCE
50Ω
R
G
= 200Ω
V
OCM
–
+
V
O, dm
R
F
C
F
C
F
R
F
R
L, dm
= 1kΩ
AD8139
0
4679-072
Figure 57. Basic Test Circuit
R
G
= 200Ω
60.4Ω
60.4Ω
50Ω
V
TEST
TEST
SIGNAL
SOURCE
50Ω
R
G
= 200Ω
V
OCM
–
+
V
O, dm
R
F
= 200Ω
R
F
= 200Ω
C
L, dm
R
L, dm
R
S
R
S
AD8139
04679-075
Figure 58. Capacitive Load Test Circuit, G = +1