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Texas Instruments DAC7741EVM manual 1. EVM Block Diagram, EVM Basic Functions

Models: DAC7741EVM

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EVM Basic Functions

A block diagram of the EVM is shown below in the Figure 1-1.

Figure 1-1. EVM Block Diagram

DAC Out

W13

(J4)

(J5)

	+15 V
	-15 V
			VCC	(J6)
			VCC	(J7)
			VDD	(J7)
			VDD
		External	VSS
	W14	Reference
	W14	Module
		Module
Output	TP1	W4
Buffer	TP1	W4
Buffer
Module	+REFIN		W3
	+REFIN		W3

Ext Ref

Input

REFIN REFout

DAC Module

(J2)

(J3)

+15 V

GND

-15 V

GND

VCC

VDD VSS

REFEN

LDAC

RST RSTSEL

R/W

TP2

(J1)

DB15 (MSB)

DB1 (LSB)

1-4

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Texas Instruments DAC7741EVM manual 1. EVM Block Diagram, A block diagram of the EVM is shown below in the Figure

Contents

User’s Guide DAC7741EVMOctober DAP EVMsIMPORTANT NOTICE EVM IMPORTANT NOTICE EVM WARNINGS AND RESTRICTIONS How to Use This Manual Read This FirstAbout This Manual Information About Cautions and WarningsRelated Documentation From Texas Instruments Questions about this or other Data Converter EVM’s?FCC Warning TrademarksContents Figures1 EVM Overview 2 Physical DescriptionTables 2-1 Parts List 3-1 Factory Default Jumper Setting3-2 Unity Gain Output Jumper Settings 3-3 Gain of Two Output Jumper SettingsEVM Overview ChapterPage Topic1.1 Features 1.2 Power Requirements1.2.1 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 Physical Description ChapterPage Topic2.1 PCB Layout Figure 2-1. Layer One Top SilkscreenPCB Layout Figure 2-2. Layer Two Ground Plane PCB LayoutPhysical Description Figure 2-3. Layer 3 Power Plane PCB LayoutFigure 2-4. Layer 4 Bottom Plane PCB LayoutPhysical Description Figure 2-5. Drill Drawing PCB Layout2-1. Parts List 2.2 Bill of MaterialsBill of Materials Physical DescriptionThis page has been left blank intentionally Bill of MaterialsEVM Operation ChapterPage Topic3.1 Factory Default Setting Table 3-1. Factory Default Jumper SettingFactory Default Setting ReferenceTable 3-2. Unity Gain Output Jumper Settings 3.2 Host Processor Operation3.2.1 Unity Gain Output Table 3-3. Gain of Two Output Jumper Settings Table 3-4. Capacitive Load Drive Output Jumper Settings3.2.2 Output Gain of Two 3.2.3 Capacitive Load Drive3.3 Jumper Setting Table 3-5. Jumper Setting FunctionJumper Setting ReferenceTable 3-5. Jumper Setting Function Continued Jumper SettingSetting Jumper3.4 Schematic A schematic of the DAC7741 is found on the following pageSchematic EVM OperationDAC7741 6443168