Texas Instruments AMC7823 EVM, User Manual

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1 EVM Overview
1.1 Features
User's Guide
SLAU171 – November 2005
AMC7823 Evaluation Module
This user’s guide describes the characteristics, operation, and the use of the AMC7823
evaluation module. It covers all pertinent areas involved to properly use this EVM board
along with the devices that it supports. The physical PCB layout, schematic diagram,
and circuit descriptions are included.
Contents
1 EVM Overview
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1
2 PCB Design
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4
3 EVM Operation
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9
4 Related Documentation From Texas Instruments
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14
List of Figures
1 EVM Block Diagram
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3
2 Top Silkscreen
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4
3 Top Layer (Signal Plane)
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5
4 Internal Layer 1 (Split Ground Plane)
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5
5 Internal Layer 2 (Split Power Plane)
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6
6 Bottom Layer (Signal Plane)
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6
7 Bottom Silkscreen
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7
8 Drill Drawing
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8
9 Factory Default Jumper Settings
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10
10 Digital Serial Interface Pinout
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11
List of Tables
1 Parts List
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8
2 Factory Default Jumper Settings
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9
3 Jumper Settings and Functions
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11
This chapter gives a general overview of the AMC7823 evaluation module (EVM) and describes some of
the factors that must be considered in using this module.
This EVM features the AMC7823 analog monitoring and control circuit device. The AMC7823 EVM is a
simple evaluation module designed for a quick and easy way to evaluate the functionality and
performance of the 12-bit resolution AMC device. The built-in ADC features an eight-channel analog input
with 200 ksps sample rate. The AMC7823 also consists of eight independent 12-bit resolution DACs with
2-
µ
s settling times. Although the AMC7823 has a built-in internal band-gap reference that is software
selectable between 1.25 V and 2.5 V, an external reference source is provided. The internal 1.25-V
reference voltage is the default reference on power up, so the reference voltage should be set to the
desired source and level, if necessary.
SPI is a trademark of Motorola, Inc..
SLAU171 – November 2005 AMC7823 Evaluation Module 1