Vmid
SH_DN/OTF
VCC_S
VCC_S
VCC_S
-
+
-
+
VS
VS_O1
IN1-
IN1+
EN
OUT1
11
1
3
2
12
13
-
+
VS_O2
IN2+
IN2-
EN
OUT2
4
5
10
9
+
NC
NC
8
7
GND
Thermal
Shutdown
SH_DN/OTF
EN
GND
15
6
A1
A2
14
GND
(TAB)
U1 ALM2402F
R4 10k
R3 24.9k
R16 10k
R17 24.9k
C3 150n
C17 150n
J1
J6
C4 100n
C5 100n
C10 100n
J3.1
J3.4
C
1
4
1
0n
J3.2
J3.3
R14
C1 150n
J4
R6
C6 150n
J2
TP1
TP2
TP7
TP10
C
8
1
0
n
TP3
TP6
TP8
TP9
SMA Connector
SMA Connector
Output
Connector J3
SMA Connector
SMA Connector
Note: SMA connectors J2 and J4 are not populated.
Resistor R6 and R14 are not populated.
IN1-
IN1+
IN2+
IN2-
DNP
DNP
DNP
DNP
Input and Output Connections
6
SBOU227 – September 2019
Copyright © 2019, Texas Instruments Incorporated
ALM2402F-Q1 Evaluation Module
5
Input and Output Connections
Input signal connections for the ALM2402FQ1EVM are provided through the use of the SMA connectors
and test points located at the left of the EVM. The dual output-amplifier connections are provided through
connector J3 and test points located at the right side of the EVM. A simplified diagram of the
ALM2402FQ1EVM input and output connections is displayed in
.
Figure 4. ALM2402FQ1EVM Input and Output Connections
summarizes the input and output connectors and corresponding test points.
Table 3. ALM2402FQ1EVM Input and Output Connections
Connector
Designator
Signal
Comment
Test Point
J1
IN1–
SMA
TP1
J2
IN1+
SMA (not populated)
TP2
J4
IN2+
SMA (not populated)
TP7
J6
IN2–
SMA
TP10
J3.1
OUT1
Screw terminal
TP3
J3.2
GND
Screw terminal
TP8
J3.3
GND
Screw terminal
TP9
J3.4
OUT2
Screw terminal
TP6
6
Modifications
By default, the ALM2402FQ1EVM is populated with both amplifiers set to the inverting configuration.
However, for flexibility, the PCB layout has additional unpopulated passive component footprints, and
additional input connections. These additional component footprints in the layout allow the user to change
the ALM2402FQ1 circuit to other common configurations, such as the buffer and noninverting amplifier
configurations. For a full schematic of the ALM2402FQ1EVM, see
.