Texas Instruments ADS4449 EVM, Руководство пользователя

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1 SLAU485A – January 2013 – Revised April 2016
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Copyright © 2013–2016, Texas Instruments Incorporated
ADS4449 EVM User Guide
User's Guide
SLAU485A – January 2013 – Revised April 2016
ADS4449 EVM User Guide
This document serves as a user’s guide for the ADS4449 Evaluation Module (EVM). The EVM provides a
platform for evaluating the ADS4449, a quad-channel, 14-bit telecommunications analog-to-digital
converter (ADC) operating at sampling rates of up to 250 MSPS. Designed for low-power consumption
and high spurious free dynamic range (SFDR), the ADC has low-noise performance and outstanding
SFDR over a large input-frequency range. The four ADC channels are separated into two blocks with two
ADCs each.
This EVM is ideally suited for mating with the TSW1400 Capture Card for performing a data capture into a
capture buffer, uploading the sample data to a PC, performing an FFT, and reporting on SNR, SFDR, and
other performance metrics.
For more information regarding the ADS4449 and the related evaluation tools, please refer to the
following:
• ADS4449 – Quad 14-bit 250-MSPS ADC ( SBAS603 )
• TSW1400 – High-Speed Data Capture and Pattern Generation Platform ( SLWU079 )
• ADS4449 EVM Configuration Software ( SLAC566 ).
Contents
1 Introduction
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1.1 EVM Block Diagram
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1.2 EVM Power Supply
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1.3 EVM Connectors and Jumpers
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1.4 EVM ADC Input Circuit Configurations
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2 Software Control
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2.1 Installation Instructions
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2.2 Software Operation
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3 Basic Test Procedure
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3.1 Test Block Diagram
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3.2 Test Set-up Connection
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3.3 ADS4449 Software Quick Start Guide
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3.4 ADS4449 and TSW1400 Setup Guide
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List of Figures
1 Simplified ADS4449 EVM Block Diagram
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2 Simplified ADS4449 EVM Power Supply
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3 ADS4449 EVM Connector and Jumper Locations
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4 ADS4449 ADC Input Circuit
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5 ADS4449 Clock Input Circuit
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6 ADS4449 Main Control Panel
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7 ADS4449 Special Modes Panel
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8 ADS4449 and TSW1400 Test Setup Block Diagram
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9 Select ADS4449 in the High Speed Converter Pro GUI Program
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10 Load ADC Firmware Prompt
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11 ADS4449 14-bit Operating Mode, Single Tone Test Result: Fs = 245.76 MSPS, Fin = 170 MHz
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List of Tables