DAC8730
Ext Power
External Passive/
Active
Conditioning
Block
MSP
4
3
0
L
a
u
n
ch
Pa
d
Œ
C
o
n
n
e
ct
o
r
+
±
2
5
0
J5
Terminal
Block
LOOP+
LOOP-
J1 Digital Header
MSP
4
3
0
F
R
5
9
6
9
L
P
Power
COM
Copyright © 2017, Texas Instruments Incorporated
BOOST-
DAC8730-HART
USB Bus
from
Computer
External Power
Source
LaunchPad
Connector
MSP430FR5969
LP
Personal
Computer
(PC)
Copyright © 2017, Texas Instruments Incorporated
BOOST-DAC8730-HART Hardware Setup
3
SLAU699 – May 2017
Copyright © 2017, Texas Instruments Incorporated
BOOST-DAC8730-HART Evaluation Module
2
BOOST-DAC8730-HART Hardware Setup
This section provides the overall system setup for the BOOST-DAC8730-HART Booster Pack. The
Booster Pack can be evaluated standalone – with any SPI- or UART-capable microcontroller – or with the
MSP430FR5969 LaunchPad™. The software provides installation steps to install the necessary
LaunchPad drivers, and MSP430FR5969 firmware. Additionally, the Graphical User Interface (GUI)
provides an interactive interface that syncs communication between the MSP430FR5969 LaunchPad and
DAC8730 device. The hardware (BOOST-DAC8730-HART and MSP430FR5969LP) is powered externally
via the loop connections of the BOOST-DAC8730-HART J2 terminal block.
displays the system
setup for the BOOST-DAC8730-HART.
Figure 1. BOOST-DAC8730-HART Hardware Setup
2.1
Theory of Operation for BOOST-DAC8730-HART Hardware
A block diagram of the BOOST-DAC8730-HART board is displayed in
. The board provides an
external terminal block (J2) for the supplies, and a digital header connection (J1) that enables connection
to the DAC8730 digital pins. Once powered, the DAC8730 outputs a voltage that powers the
MSP430FR5969 LaunchPad. The BOOST-DAC8730-HART includes a diode bridge and protection circuit
that is tied to the J2 terminal block. This protection allows any polarity of power into the J2 terminal block.
Figure 2. BOOST-DAC8730-HART Test Board Block Diagram