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1 EVM Overview
1.1 Features
1.2 Introduction
User's Guide
SLAU163 – September 2005
DAC7811EVM
This user’s guide describes the characteristics, operation, and use of the
DAC7811EVM – a 12-bit, synchronous-serial-interface, digital-to-analog converter
evaluation module (EVM). A complete circuit description, a schematic diagram, and bill
of materials are included.
Contents
1 EVM Overview ...................................................................................... 1
2 Analog Interface .................................................................................... 2
3 Digital Interface ..................................................................................... 3
4 Power Supplies ..................................................................................... 3
5 EVM Operation ...................................................................................... 4
6 EVM Bill of Materials and Schematic ............................................................ 5
List of Tables
1 Pinout of J1 .......................................................................................... 2
2 Pinout of J2T ........................................................................................ 3
3 Pinout of J2B ........................................................................................ 3
4 Pinout of J3 .......................................................................................... 4
5 List of Jumpers and Switches ..................................................................... 5
6 Bill of Materials ...................................................................................... 5
• Evaluation board for the 12-bit current output DAC7811
• Onboard reference and buffer circuits
• High-speed serial interface
• Modular design for use with a variety of DSP and microcontroller interface boards
The DAC7811 is a single, 12-bit, serial-input, current-output, digital-to-analog (DAC) converter operating
from a single 3-V to 5-V power supply. This converter provides excellent 4-quadrant multiplication
characteristics, with a large signal multiplying bandwidth of 10 MHz. An integrated feedback resistor
provides temperature tracking and full-scale voltage output when combined with an external cur-
rent-to-voltage (I-to-V) precision amplifier. The EVM provides the external I-to-V amplifier and DPDT
switch to allow unipolar and bipolar output operation.
The modular EVM form factor allows direct evaluation of the DAC’s performance and operating
SLAU163 – September 2005 DAC7811EVM 1
