AD8139
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD8139
–IN
1
V
OCM 2
V+
3
+OUT
4
8
7
6
5
+IN
NC
V–
–OUT
04679-0-003
NC = NO CONNECT
Figure 4. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
Mnemonic
−IN
V
OCM
V+
+OUT
−OUT
V−
NC
+IN
Description
Inverting Input.
An internal feedback loop drives the output common-mode voltage to be equal to the
voltage applied to the V
OCM
pin, provided the amplifier’s operation remains linear.
Positive Power Supply Voltage.
Positive Side of the Differential Output.
Negative Side of the Differential Output.
Negative Power Supply Voltage.
No Internal Connection.
Noninverting Input.
R
F
50Ω
60.4Ω
V
TEST
60.4Ω
TEST
SIGNAL
SOURCE
R
G
= 200Ω
50Ω
R
F
C
F
V
OCM
R
G
= 200Ω
C
F
AD8139
R
L, dm
= 1kΩ
–
V
O, dm
+
04679-0-072
Figure 5. Basic Test Circuit
50Ω
60.4Ω
V
TEST
60.4Ω
TEST
SIGNAL
SOURCE
R
G
= 200Ω
50Ω
V
OCM
R
G
= 200Ω
R
F
= 200Ω
R
S
AD8139
R
S
R
F
= 200Ω
C
L, dm
–
R
L, dm
V
O, dm
+
04679-0-075
Figure 6. Capacitive Load Test Circuit, G = +1
Rev. A | Page 8 of 24
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