BUF20800/
BUF20820
J1
T4
TPG1
V
Supply
(AV
Power Supply)
DUT
DD
I C Interface
2
Test Outputs
I C A0 Address
Jumper
2
External BUF20800/20820
Analog Power Supply
Test Point
Header
25-Pin Male
DSUB
www.ti.com
BUF20800/20820EVM Hardware Setup
2.1
Theory of Operation for BUF20800/20820 Hardware
A block diagram of the BUF20800/20820 test board hardware setup is shown in
. The functionality
of the PCB is such that it provides connections to the I
2
C™ interface and general-purpose inputs/outputs
(GPIOs) on the USB_DIG_Platform board. It also provides connection points for external connections of
the shunt voltage, bus voltage, and ground.
Figure 3. BUF20800/20820EVM Board Block Diagram
5
SBOU100 – April 2011
BUF20800/20820EVM User Guide and Software Tutorial
© 2011, Texas Instruments Incorporated