Texas Instruments DAC8801/11EVM, Руководство пользователя

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Using the DAC8811EVM with DXP
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9.2 MMB0 Power Supplies
Several power connections are required for the hardware to work properly. For the MMB0, the supplied
6-V ac/dc converter is all that is necessary. Be sure that J12 on the MMB0 board is closed before
connecting the ac/dc adapter to the DC In connector of the MMB0. This supply provides all power to the
digital portion of the DAC8811EVM as well as all necessary power for the DSP. Clean, well-regulated
analog power for the DAC8811EVM should be supplied externally via J14, a six-position screw terminal
mounted in the lower left corner of the MMB0 board.
CAUTION
When using external power supplies applied to J14 on the MMB0, please
ensure all shorting blocks from J13 are completely removed. Permanent
damage to the MMB0 may occur otherwise.
From left to right, the J14 screw terminal connections are –VA, +VA, +5VA, –5VA, +5VD, and GND. The
5V from the ac/dc adapter can be connected to the +VA or the +5VA by installing a jumper across JP13A
or JP13B. If the jumpers are not installed, the analog V
SS
, V
CC
, +5VA, and –5VA may be applied directly to
the –VA, +VA, +5VA, and –5VA screw terminals at J14 on the MMB0 (referenced to the GND
terminal).The DAC8811 board power requirements are described in
Section 4.2 of this manual.
14 DAC8801/11EVM SLAU151A – January 2005 – Revised November 2009
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