PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
–IN 1
VOCM 2
VS+ 3
+OUT 4
AD8137
8 +IN
7 PD
6 VS–
5 –OUT
Figure 4. Pin Configuration
Table 6. Pin Function Descriptions
Pin No. Name 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
VS+
Positive Power Supply Voltage.
4
+OUT Positive Side of the Differential Output.
5
−OUT Negative Side of the Differential Output.
6
VS−
Negative Power Supply Voltage.
7
PD
Power Down.
8
+IN
Noninverting Input.
50Ω
VTEST
TEST
50Ω
SIGNAL
SOURCE
RF
52.3Ω
RG = 1kΩ
MIDSUPPLY VOCM
52.3Ω
RG = 1kΩ
CF
+
AD8137
–
CF
RF
Figure 5. Basic Test Circuit
–
RL, dm 1kΩ VO, dm
+
50Ω
VTEST
TEST
50Ω
SIGNAL
SOURCE
RF = 1kΩ
52.3Ω
RG = 1kΩ
MIDSUPPLY VOCM
52.3Ω
RG = 1kΩ
+
AD8137
–
RF = 1kΩ
RS
–
CL, dm RL, dm VO, dm
+
RS
Figure 6. Capacitive Load Test Circuit, G = 1
Rev. A | Page 7 of 24
AD8137