Texas Instruments INA209, User Manual, Page: 5 / 27

INA209
I C
Interface
2
V Supply
Switched 5.0V Power
DUT
I C
Address
Jumpers
2
General-Purpose
Digital I/O
Connects to Alert, Warning, Critical,
Overlimit, GPIO, and Convert
Connection to
Shunt Voltage
and GND
25-Pin
Male DSUB Signals
From USB DIG Platform
25-Pin
Female DSUB Signals
From USB DIG Platform
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System Setup
2.1 Theory of Operation for the INA209 Test Board Hardware
Figure 3 shows the block diagram of the INA209 test board. The INA209 test board functionality is
relatively simple. It provides connections to the I
2
C™ interface and general-purpose inputs/outputs
(GPIOs) on the USB Dig platform. It also provides connection points for external connection of the shunt
voltage, bus voltage, and GND on the system being measured.
Figure 3. Block Diagram of the INA209 Test Board
5 SBOU055A – February 2008 – Revised February 2010 INA209 Evaluation Module
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