AD8139
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD8139
–IN
1
2
8
7
6
5
+IN
NC
V
OCM
V+
V–
3
4
+OUT
–OUT
NC = NO CONNECT
Figure 4. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
2
−IN
VOCM
Inverting Input.
An internal feedback loop drives the output common-mode voltage to be equal to the
voltage applied to the VOCM pin, provided the amplifier’s operation remains linear.
3
4
5
6
7
8
V+
Positive Power Supply Voltage.
Positive Side of the Differential Output.
Negative Side of the Differential Output.
Negative Power Supply Voltage.
No Internal Connection.
+OUT
−OUT
V−
NC
+IN
Noninverting Input.
R
C
F
50Ω
50Ω
F
R
R
= 200Ω
= 200Ω
G
–
60.4Ω
60.4Ω
V
V
R
= 1kΩ
V
TEST
AD8139
OCM
L, dm
O, dm
+
TEST
G
C
F
F
SIGNAL
SOURCE
R
Figure 5. Basic Test Circuit
R
= 200Ω
F
50Ω
50Ω
R
R
R
R
= 200Ω
= 200Ω
S
S
G
–
60.4Ω
60.4Ω
V
V
C
R
V
TEST
AD8139
OCM
L, dm
L, dm
O, dm
+
TEST
G
SIGNAL
SOURCE
R
= 200Ω
F
Figure 6. Capacitive Load Test Circuit, G = +1
Rev. A | Page 8 of 24
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