Texas Instruments TLV320DAC3203 Evaluation Module TLV320DAC3203EVM-K TLV320DAC3203EVM-K Datenbogen
Produktcode
TLV320DAC3203EVM-K
EVM Description and Basics
2.5
Power Connections
The TLV320DAC3203EVM is powered independently when being used in stand-alone operation or by the
USB-MODEVM when it is plugged onto the motherboard.
USB-MODEVM when it is plugged onto the motherboard.
2.5.1
Stand-Alone Operation
When used as a stand-alone EVM, power is applied to P23/J23 directly, making sure to reference the
supplies to the appropriate grounds on that connector.
supplies to the appropriate grounds on that connector.
CAUTION
Verify that all power supplies are within the safe operating limits shown on the
before applying power to the EVM.
P23/J23 provides a connection to the common power bus for the TLV320DAC3203EVM. Power is
supplied on the pins listed in
supplied on the pins listed in
The TLV320DAC3203EVM-K motherboard (the USB-MODEVM Interface board) supplies power to
P23/J23 of the TLV320DAC3203EVM. Power for the motherboard is supplied either through its USB
connection or through terminal blocks on that board.
P23/J23 of the TLV320DAC3203EVM. Power for the motherboard is supplied either through its USB
connection or through terminal blocks on that board.
2.5.2
USB-MODEVM Operation
The USB-MODEVM Interface board is powered from several different sources:
•
USB
•
6-V
DC
to 10-V
DC
AC/DC external wall supply (not included)
•
Laboratory power supply
When powered from the USB connection, JMP6 must have a shunt from pins 1–2 (this is the default
factory configuration). When powered from 6-V
factory configuration). When powered from 6-V
DC
to 10-V
DC
power supply, either through the J8 terminal
block or J9 barrel jack, JMP6 must have a shunt installed on pins 2–3. If power is applied in any of these
ways, onboard regulators generate the required supply voltages, and no further power supplies are
necessary.
ways, onboard regulators generate the required supply voltages, and no further power supplies are
necessary.
If laboratory supplies are used to provide the individual voltages required by the USB-MODEVM Interface,
JMP6 must have no shunt installed. Voltages are applied to J2 (+5 VA), J3 (+5 VD), J4 (+1.8 VD), and J5
(+3.3 VD). The onboard regulators from the +5-VD supply can generate +1.8 VD and +3.3 VD on the
board by setting the switches on SW1 in the ON position (lower position, looking at the board with text
reading right-side up). If +1.8 VD and +3.3 VD are supplied externally, disable the onboard regulators by
placing the SW1 switches in the OFF position.
JMP6 must have no shunt installed. Voltages are applied to J2 (+5 VA), J3 (+5 VD), J4 (+1.8 VD), and J5
(+3.3 VD). The onboard regulators from the +5-VD supply can generate +1.8 VD and +3.3 VD on the
board by setting the switches on SW1 in the ON position (lower position, looking at the board with text
reading right-side up). If +1.8 VD and +3.3 VD are supplied externally, disable the onboard regulators by
placing the SW1 switches in the OFF position.
Each power supply voltage has an LED (D1-D7) that illuminates when the power supplies are active.
7
SLAU441 – April 2012
TLV320DAC3203EVM-K
Copyright © 2012, Texas Instruments Incorporated