Datasheet

ADA4938-1/ADA4938-2
Rev. A | Page 8 of 28
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
06592-003
1–FB
2+IN
3–IN
4+FB
11 –OUT
12 PD
10 +OUT
9V
OCM
5
+V
S
6
+V
S
7
+V
S
8
+V
S
15
–V
S
16
–V
S
14
–V
S
13
–V
S
ADA4938-1
TOP VIEW
(Not to Scale)
PIN 1
INDICATOR
NOTES
1. THE EXPOSED PAD IS NOT ELECTRICALLY CONNECTED
TOTHE DEVICE. IT IS TYPICALLY SOLDERED TO GROUND
OR A POWER PLANE ON THE PCB THAT IS THERMALLY
CONDUCTIVE.
Figure 5. ADA4938-1 Pin Configuration
06592-206
PIN 1
INDICATOR
1
2
3
4
5
6
15
16
17
18
14
13
7
8
9
11
12
10
21
22
23
24
+IN1
20
19
TOP VIEW
(Not to Scale)
ADA4938-2
–IN1
+FB1
+V
S1
+V
S1
–FB2
+IN2
–V
S2
–V
S2
V
OCM1
+OUT1
PD2
–OUT2
–IN2
+FB2
+V
S2
V
OCM2
+OUT2
+V
S2
–V
S1
–V
S1
–FB1
PD1
–OUT1
NOTES
1. THE EXPOSED PAD IS NOT ELECTRICALLY CONNECTED
TOTHE DEVICE. IT IS TYPICALLY SOLDERED TO GROUND
OR A POWER PLANE ON THE PCB THAT IS THERMALLY
CONDUCTIVE.
Figure 6. ADA4938-2 Pin Configuration
Table 7. ADA4938-1 Pin Function Descriptions
Pin No. Mnemonic Description
1 −FB Negative Output Feedback Pin.
2 +IN Positive Input Summing Node.
3 −IN Negative Input Summing Node.
4 +FB Positive Output Feedback Pin.
5 to 8 +V
S
Positive Supply Voltage.
9 V
OCM
Output Common-Mode Voltage.
10 +OUT Positive Output for Load Connection.
11 −OUT Negative Output for Load Connection.
12
PD
Power-Down Pin.
13 to 16 −V
S
Negative Supply Voltage.
EP
Exposed Paddle. The exposed pad is not
electrically connected to the device. It is
typically soldered to ground or a
power plane on the PCB that is
thermally conductive.
Table 8. ADA4938-2 Pin Function Descriptions
Pin No. Mnemonic Description
1 −IN1 Negative Input Summing Node 1.
2 +FB1 Positive Output Feedback Pin 1.
3, 4 +V
S1
Positive Supply Voltage 1.
5 −FB2
Negative Output Feedback Pin 2.
6 +IN2
Positive Input Summing Node 2.
7 −IN2
Negative Input Summing Node 2.
8 +FB2
Positive Output Feedback Pin 2.
9, 10 +V
S2
Positive Supply Voltage 2.
11 V
OCM2
Output Common-Mode Voltage 2.
12 +OUT2
Positive Output 2.
13 −OUT2
Negative Output 2.
14
PD2
Power-Down Pin 2.
15, 16
−
V
S2
Negative Supply Voltage 2.
17
V
OCM1
Output Common-Mode Voltage 1.
18 +OUT1
Positive Output 1.
19 −OUT1
Negative Output 1.
20
PD1
Power-Down Pin 1.
21, 22 −V
S1
Negative Supply Voltage 1.
23 −FB1
Negative Output Feedback Pin 1.
24 +IN1
Positive Input Summing Node 1.
EP
Exposed Paddle. The exposed pad is
not electrically connected to the
device. It is typically soldered to
ground or a power plane on the PCB
that is thermally conductive.