AD8139
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
–IN 1
VOCM 2
V+ 3
+OUT 4
AD8139
8 +IN
7 NC
6 V–
5 –OUT
NC = NO CONNECT
Figure 4. Pin Configuration
Table 5. Pin Function Descriptions
Pin No. Mnemonic
Description
1
−IN
Inverting Input.
2
VOCM
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
V+
Positive Power Supply Voltage.
4
+OUT
Positive Side of the Differential Output.
5
−OUT
Negative Side of the Differential Output.
6
V−
Negative Power Supply Voltage.
7
NC
No Internal Connection.
8
+IN
Noninverting Input.
RF
VTEST
TEST
SIGNAL
SOURCE
50Ω
60.4Ω
60.4Ω
50Ω
RG = 200Ω
VOCM
RG = 200Ω
CF
AD8139
CF
RF
Figure 5. Basic Test Circuit
RL, dm = 1kΩ
–
VO, dm
+
VTEST
TEST
SIGNAL
SOURCE
50Ω
60.4Ω
60.4Ω
50Ω
RG = 200Ω
VOCM
RG = 200Ω
RF = 200Ω
RS
AD8139
RS
RF = 200Ω
CL, dm
–
RL, dm VO, dm
+
Figure 6. Capacitive Load Test Circuit, G = +1
Rev. A | Page 8 of 24