Texas Instruments DAC43401, Руководство пользователя, Страница: 6 / 31

XDS110
USB Port
Analog EVM
Controller
(MSP432E401Y)
BOOSTXL-DAC-PORT
Optional Function
Extender Card
OTG USB
Port (U7)
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DAC EVM
Optional
Jumpers/Test
Points
Jumpers/Test Points
System Setup
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6 SLAU805 – July 2019
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DAC53401EVM
2.2 Hardware Setup
This section provides the overall system setup for the EVM. The hardware setup contains the Analog EVM
Controller (MSP-EXP432E401Y Launchpad), BOOSTXL-DAC-PORT, and DAC53401EVM. A PC runs
software that provides an interface to the DAC53401EVM through the Analog EVM Controller.
The Analog EVM Controller generates 5 V of power that can be used as VDD for the DAC. Analog EVM
Controller also generates 3.3 V of power that can be used for I
2
C pull-ups. The IO ports of the Analog
EVM Controller and level translators used on the BOOSTXL-DAC-PORT and DAC53401EVM can
withstand a maximum of 3.6-V IO levels. The Analog EVM Controller also generates digital signals used to
communicate with the EVM board.
The BOOSTXL-DAC-PORT is a generic platform used for catalog DACs that provides a predefined
interface to connect a DAC evaluation module. The BOOSTXL-DAC-PORT also provides various options
for power supply, reference, and digital signals. A connector is provided on the BOOSTXL-DAC-PORT for
external power supplies. This platform is designed to host additional boards stacked up on the BOOSTXL-
DAC-PORT in order to provide extended functions.
Figure 5 displays the system setup.
Figure 5. Hardware Setup
2.2.1 Power Configurations and Jumper Settings
The DAC53401EVM provides electrical connections to the device supply pins. The connectors and
optional configurations are shown in
Table 4 . The jumper settings on the BOOSTXL-DAC-PORT are
crucial to the proper functioning of the DAC53401EVM. Table 5 provides the details of the possible jumper
settings on the BOOSTXL-DAC-PORT.
Table 4. DAC53401EVM Power Supply Inputs
DAC53401EVM
Connector
Supply Name Voltage Range
J2.1 VDD 1.8 V to 5.5 V (5 V Available on Analog EVM Controller), Jumper J9.1-2 on BOOSTXL-DAC-PORT
J1.8 VIO 1.8 V to 3.6 V (3.3 V Available on Analog EVM Controller), Jumper J10.1-2 on BOOSTXL-DAC-PORT
J1.7 DAC_VIO 1.8 V to 3.6 V, Jumper J11.1-2 on BOOSTXL-DAC-PORT
J1.1 GND 0 V
Table 5. BOOSTXL-DAC-PORT Jumper Settings
Jumper Default Position Available Option Description
J3 1-2: Onboard reference 2-3: External reference External or onboard reference selection
J6 2-3: Zener reference 1-2: VDD reference Zener or VDD reference
J7 2-3: 2.5-V reference 1-2: 5-V reference 2.5-V or 5-V reference selection
J8 2-3: Unused on DAC53401 1-2: Unused on DAC53401 External or onboard LDAC selection
J9 1-2: 5 V from Launchpad 2-3: External VDD 5-V or external VDD
J10 1-2: 3.3 V from Launchpad 2-3: External VIO 3.3-V or external VIO
J11 Closed: DAC_VIO is connected to VIO Open: DAC_VIO off DAC_VIO on/off