DAC8562T Datasheet, PDF (3/14 Pages) Texas Instruments – DAC8562T Evaluation Module

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1 EVM Overview
EVM Overview
1.1 Features
The DAC8562TEVM has the following features:
• Full-featured evaluation board for the DAC8562T
• Onboard external reference selection
• Wide selection of digital and I/O voltages
• Hardware and software control logic
• Compatible with the TI Modular EVM Motherboard MMB0
This manual covers the operation of the DAC8562TEVM. The abbreviation EVM and the term evaluation
module are synonymous with the DAC8562TEVM.
1.2 Introduction
The DAC8562T is a 16-bit, low-power, buffered voltage-output, dual channel digital-to-analog converter
(DAC) that operates from a single 2.7-V to 5.5-V supply. The DAC is controlled through a serial peripheral
interface (SPI) that can operate at clock rates of up to 50 MHz. The EVM is designed to highlight the
features and the performance of the 16-bit DAC. Additionally, the EVM includes a 2.5-V external reference
voltage, resulting in an output range from 0 V to 2.5 V.
The DAC8562TEVM is designed to give the user easy access to all pins on the DAC8562T. The
evaluation module allows the user to control the DAC logic using onboard jumpers, or digitally through the
J2 header. By default, the evaluation module is configured to be used with an onboard 2.5-V external
reference, but can be easily modified to use the DAC internal reference by changing a jumper setting and
enabling the internal reference using software.
1.3 Power and Motherboard Requirements
This DAC8562TEVM board can be used as a standalone board or as a daughter card to the MMB0
Modular EVM motherboard.
1.3.1 Supply Voltage Ranges
Table 1 lists the supply voltage ranges for the EVM.
Table 1. Supply Voltage Ranges
Signal
VDD
VREF_VIN
VREF_EXT
Range
+2.7 V to +5.5 V
+2.7 V to +15 V
0 V to VDD
1.3.2 Motherboard Supply Mode
The MMB0 motherboard can supply the digital interface as well as the power supply voltage required by
the DAC8562TEVM. This user’s guide focuses on the motherboard supply mode and its software.
1.3.3 Standalone Supply Mode
The DAC8562TEVM can also be used without a motherboard, provided that the digital interface is driven
by an external source. The supply voltage must be applied at TP1/VDD according to the specifications in
Table 1.
The MMB0 can still be used as a digital interface while using an external power supply. Remember to
disconnect any shunt from JP1.
SLAU650 – October 2015
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DAC8562T Evaluation Module
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