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Texas Instruments DAC7741EVM manual EVM Operation, Chapter, Page, Topic

Models: DAC7741EVM

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Chapter 3

EVM Operation

This chapter covers in detail the operation of the EVM to provide guidance to the user in evaluating the onboard DAC and how to interface the EVM to a specific host processor.

Refer to the DAC7741 data sheet, SBAS248, for information about its parallel interface and other related topics.

The EVM board is factory tested and configured to operate in the bipolar output mode.

Topic		Page

3.1	Factory Default Setting	. . 3-2
3.2	Host Processor Interface	. . 3-3
3.3	Jumper Setting	. . 3-5
3.4	Schematic	. . 3-7

3-1

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Texas Instruments DAC7741EVM manual EVM Operation, Chapter, Page, Topic

Contents

DAC7741EVM User’s GuideOctober DAP EVMsIMPORTANT NOTICE EVM IMPORTANT NOTICE EVM WARNINGS AND RESTRICTIONS Read This First How to Use This ManualAbout This Manual Information About Cautions and WarningsQuestions about this or other Data Converter EVM’s? Related Documentation From Texas InstrumentsFCC Warning TrademarksFigures Contents1 EVM Overview 2 Physical Description2-1 Parts List 3-1 Factory Default Jumper Setting Tables3-2 Unity Gain Output Jumper Settings 3-3 Gain of Two Output Jumper SettingsChapter EVM OverviewPage Topic1.2 Power Requirements 1.1 Features1.2.1 Supply Voltage 1.2.2 Reference Voltage1.3 EVM Basic Functions EVM Basic FunctionsEVM Overview Figure 1-1. EVM Block Diagram A block diagram of the EVM is shown below in the FigureEVM Basic Functions Chapter Physical DescriptionPage Topic2.1 PCB Layout Figure 2-1. Layer One Top SilkscreenPCB Layout Figure 2-2. Layer Two Ground Plane PCB LayoutPhysical Description PCB Layout Figure 2-3. Layer 3 Power PlaneFigure 2-4. Layer 4 Bottom Plane PCB LayoutPhysical Description PCB Layout Figure 2-5. Drill Drawing2.2 Bill of Materials 2-1. Parts ListBill of Materials Physical DescriptionBill of Materials This page has been left blank intentionallyChapter EVM OperationPage TopicTable 3-1. Factory Default Jumper Setting 3.1 Factory Default SettingFactory Default Setting ReferenceTable 3-2. Unity Gain Output Jumper Settings 3.2 Host Processor Operation3.2.1 Unity Gain Output Table 3-4. Capacitive Load Drive Output Jumper Settings Table 3-3. Gain of Two Output Jumper Settings3.2.2 Output Gain of Two 3.2.3 Capacitive Load DriveTable 3-5. Jumper Setting Function 3.3 Jumper SettingJumper Setting ReferenceJumper Setting Table 3-5. Jumper Setting Function ContinuedSetting JumperA schematic of the DAC7741 is found on the following page 3.4 SchematicSchematic EVM Operation6443168 DAC7741