Texas Instruments DAC8832EVM - DAC8832 Evaluation Module DAC8832EVM DAC8832EVM 데이터 시트
제품 코드
DAC8832EVM
EVM Overview
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1
EVM Overview
This section provides an overview of the DAC8831/32 evaluation module (EVM), and instructions on
setting up and using this evaluation module. Throughout this document, the abbreviation EVM and the
phrase evaluation module are synonymous with the DAC8831/32EVM. Unless otherwise specified,
operation of the DAC8831EVM is identical to the operation of the DAC8832EVM; therefore, the
abbreviation DAC8831/32EVM is used throughout this document
setting up and using this evaluation module. Throughout this document, the abbreviation EVM and the
phrase evaluation module are synonymous with the DAC8831/32EVM. Unless otherwise specified,
operation of the DAC8831EVM is identical to the operation of the DAC8832EVM; therefore, the
abbreviation DAC8831/32EVM is used throughout this document
1.1
Features
This EVM features the DAC8831/32 16-bit resolution, unbuffered voltage output digital-to-analog converter
(DAC). This EVM supports the 14-pin QFN package (RGY) only for the DAC8831 and the DAC8832. The
design is based on the modular EVM format for Data Acquisitions Product group of Texas Instruments to
provide quick and easy way to evaluate the functionality and performance of the high-resolution serial
input DAC. This EVM includes an onboard reference and buffer circuits and allows high-speed serial
interface with a variety of TI DSP and microcontroller interface boards.
(DAC). This EVM supports the 14-pin QFN package (RGY) only for the DAC8831 and the DAC8832. The
design is based on the modular EVM format for Data Acquisitions Product group of Texas Instruments to
provide quick and easy way to evaluate the functionality and performance of the high-resolution serial
input DAC. This EVM includes an onboard reference and buffer circuits and allows high-speed serial
interface with a variety of TI DSP and microcontroller interface boards.
1.2
Power Requirements
The following sections describe the power requirements of this EVM.
1.2.1
Supply Voltage
The dc power supply for the digital section (V
DD
) of this EVM is dedicated to +5V via the J3-10 terminal
and is referenced to ground through the J3-5 terminal.
The dc power supply requirements for the analog section of this EVM are as follows: the +5VA connects
through J3-3 and the –5VA connects through J3-4. All the analog power supplies are referenced to analog
ground through J3-6 terminal.
through J3-3 and the –5VA connects through J3-4. All the analog power supplies are referenced to analog
ground through J3-6 terminal.
The device under test (U3) power supply only requires +5V to operate; therefore, the supply is derived
from V
from V
DD
(via J3-10). The +5VA supply sources the positive rail of the external output op-amp, U1, while
–V, which is configurable between –5VA and AGND via R2 and R7 shorting resistors, supplies the
negative rail of the output op-amp. The supply for the voltage reference circuit U5, as well as the
reference buffer U4, uses +5VA, and their respective grounds are tied together in a star connection. The
J3 header provides connection to the common power bus described in the
negative rail of the output op-amp. The supply for the voltage reference circuit U5, as well as the
reference buffer U4, uses +5VA, and their respective grounds are tied together in a star connection. The
J3 header provides connection to the common power bus described in the
).
shows the pinout of connector J3.
Table 1. Pinout of J3
Signal
Pin Number
Signal
Unused
1
2
Unused
+5VA
3
4
–5VA
DGND
5
6
AGND
Unused
7
8
Unused
Unused
9
10
+5VD
CAUTION
To avoid potential damage to the EVM board, make sure that the correct cables
are connected to their respective terminals as labeled on the EVM board.
are connected to their respective terminals as labeled on the EVM board.
Stresses above the maximum listed voltage ratings may cause permanent
damage to the device.
damage to the device.
2
DAC8831/32 Evaluation Module
SLAU202A – December 2006 – Revised November 2009
Copyright © 2006–2009, Texas Instruments Incorporated