Texas Instruments ALM2403-Q1, User Manual

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VCC_S VCC_S
VCC_S
-
+
-
+
VCC VCC
IN1
±
IN1+
EN
OUT1
11
1
3
2
12
13
-
+
VCC
IN2+
IN2
± EN
OUT2
4
5
10
9
+
NC
NC
8
7
GND
Thermal
Shutdown
SH_DN/OTF EN
GND
U1 ALM2403-Q1
15 6
A1
A2
14
GND
VCC_S
D1
1 2 3
J5
1
2
J7
Power-Supply
Connector
GND
C19
100 nF C18
10 µF
GND
C10
100 nF
C5
100 nF
C4
100 nF
Power-Supply Connections
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6 SBOU236 – February 2020
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ALM2403-Q1 Evaluation Module
4 Power-Supply Connections
The power-supply connections for the ALM2403Q1EVM are provided through connector J7 at the top of
the EVM.
Table 3 summarizes the pin definition for supply connector J7, and the allowed voltage range for
each supply connection.
Table 3. ALM2403Q1EVM Supply-Range Specifications
Pin Number Supply Connection Voltage Range
J7.1 Input stage supply (VCC) 5 V to 24 V
J7.2 Ground 0 V
The ALM2403Q1 is configured to use a single supply connected through J7.1 (VCC) and J7.2 (GND). By
default, jumper J5 is set to shunt pins 2-3 placing a Schottky diode (D1) in series with the power supply
connection. The Schottky diode blocks any reverse current into the VCC_S supply during a fault condition
when the output of the amplifier is shorted to a higher potential than the VCC_S supply. Place J5 to shunt
pins 1-2 to bypass the optional diode (D1).
Figure 3 shows the ALM2403Q1EVM voltage supply
connections.
Figure 3. ALM2403Q1EVM Voltage Supply Connections