Datasheet

Features
1-2
1.1 Features
This EVM features the DAC8531 digital-to-analog converter. It was specifically
designed for the DAC8531, but can also accommodate the DAC8501,
DAC7513, and DAC7512. The digital-to-analog converter device that is
installed onto the board determines the version of this EVM as shown in the
table below. Although this EVM is shipped from factory with the DAC8531, the
table below shows the different DAC devices that can be installed as an option
to the user.
Table 1–1.List of DAC Devices Supported by This EVM
EVM Version Device Option Channel Installation
DAC7512 1 Optional
12-Bit
DAC7513 1 Optional
DAC8501 1 Optional
16-Bit
DAC8531 1 Default
Although the DAC was designed for single-supply operation, a bipolar output
range is also possible by configuring the output op-amp circuit properly. This
is discussed in detail in section 3.2.3. A 5-V precision voltage reference is pro-
vided as a default circuit reference for the DAC, but a connection terminal is
also available as an option for an external voltage reference if desired. An
80-pin user interface connector that is SPRA711 compliant is included for the
C6000 and C54X TI DSP users. A standard 20-pin header connector is also
available for general microcontroller/microprocessor users. This EVM has a
built-in dc test mode to easily check for board functionality, thus eliminating the
arduous task of providing the digital data information for the DAC.
A 3.5 x 5 mm breadboarding area is also provided in the EVM board. This will
serve as a platform for any additional circuitry needed that the user deems nec-
essary for further evaluating the DAC onboard or other experiments.
1.2 Power Requirements
The following sections describe the power requirements of this EVM.
1.2.1 Supply Voltage
The dc power supply range for this EVM is from 3.3 V to 5.5 V connected to
the J2–2 terminal and is referenced to ground through the J2–1 terminal. If the
DAC bipolar mode operation is desired, then a separate ±15 V supply is re-
quired to provide the rails for the OPA177 op-amp that is used to generate the
–5 V rail of the OPA350 op-amp. The 15-V supply connects through the J1–3
terminal, and the –15-V supply connects through the J1–1 terminal. The ±15-V
supply is referenced to ground through the J1–2 terminal. The EVM consumes
approximately 700 mW at 5.5 V and approximately 500 mW at 3.3 V.