Texas Instruments ADS4449 EVM User Manual
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Texas Instruments ADS4449 EVM User Manual

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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).
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SLAU485A - January 2013 - Revised April 2016
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List of Tables
Copyright © 2013-2016, Texas Instruments Incorporated
SLAU485A - January 2013 - Revised April 2016
ADS4449 EVM User Guide
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Summary of Contents for Texas Instruments ADS4449 EVM

  • Page 1: Table Of Contents

    ADS4449 and TSW1400 Setup Guide List of Figures ................Simplified ADS4449 EVM Block Diagram ................. Simplified ADS4449 EVM Power Supply ..............ADS4449 EVM Connector and Jumper Locations ....................ADS4449 ADC Input Circuit ....................ADS4449 Clock Input Circuit ....................ADS4449 Main Control Panel ...................

  • Page 2: Introduction

    Supply Circuits 6 V only Figure 1. Simplified ADS4449 EVM Block Diagram The clock input is supplied by way of a single-ended signal to an SMA connector and transformer coupled producing a differential clock signal for the ADS4449. Power to the EVM is supplied by connecting the provide power cable between J1 of the EVM and a 6- VDC power supply capable of providing 3 amps.

  • Page 3: Evm Power Supply

    Dual Output DC/DC Converter TPS7A8001 To ADC LDO 1.9 V Low Noise LDO Figure 2. Simplified ADS4449 EVM Power Supply Table 1. Power Supply Options Power Supply Comment Options Dual outputs DC/DC converter supplies 3.85 V and 2.4 V to two Option #1 low-noise LDOs.

  • Page 4: Evm Connectors And Jumpers

    RESET ADS4449 CH B CLKIN Figure 3. ADS4449 EVM Connector and Jumper Locations The locations of the connectors, jumpers, pushbutton switches, and LEDs are shown in Figure 3. The EVM has power connectors or banana jacks connecting the main power for power distribution. The SMA connectors connect the ADC input and ADC clock input to the ADC.
  • Page 5 Introduction www.ti.com Table 2. ADS4449 EVM Connectors (continued) Reference Designator Description CH D input (positive) CH D input (negative) DNI The on-board jumper options allow configuration of on-board power supplies and ADC options. Many of the jumper selections that involve DC inputs or static control signals are by way of push-on square post jumpers.

  • Page 6: Evm Adc Input Circuit Configurations

    Introduction www.ti.com Table 5. ADS4449 EVM LED Indicators (continued) Reference Description Designator When lit, D2 shows the presence of the USB to serial converter power EVM ADC Input Circuit Configurations Figure 4 shows the ADS4449 ADC input circuit. The default setup has a dual 1:1 impedance ratio transformer input circuit, which achieves better phase and amplitude balance of the input signal than is typically produced by a single transformer input circuit.

  • Page 7: Software Operation

    – If needed, access the drivers directly in the install directory Software Operation The ADS4449 EVM GUI software allows programming control of the ADS4449 device. The front panel provides a tab for common control of the ADS4449. The GUI tabs provide a convenient and simplified interface to the most-used registers of each device.

  • Page 8: Ads4449 Special Modes Panel

    Note: Reset the board after every power cycle and click the Reset USB button on the GUI • Exit: Stops the program ADS4449 EVM User Guide SLAU485A – January 2013 – Revised April 2016 Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated...

  • Page 9: Basic Test Procedure

    Synchronized Sources Signal Signal Generator Generator (Input Source) (CLK Source) Figure 8. ADS4449 and TSW1400 Test Setup Block Diagram SLAU485A – January 2013 – Revised April 2016 ADS4449 EVM User Guide Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated...

  • Page 10: Test Set-Up Connection

    Channel A Gain Enable switch, toggling the switch to the enabled state, and then the Channel A Gain selection becomes available for use. ADS4449 EVM User Guide SLAU485A – January 2013 – Revised April 2016 Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated...

  • Page 11: Ads4449 And Tsw1400 Setup Guide

    2. When prompted Do you want to update the Firmware for ADC?, select Yes Figure 10. Load ADC Firmware Prompt SLAU485A – January 2013 – Revised April 2016 ADS4449 EVM User Guide Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated...

  • Page 12: Ads4449 14-Bit Operating Mode, Single Tone Test Result: Fs = 245.76 Msps, Fin = 170 Mhz

    Changes from Original (January 2013) to A Revision ....................Page ....• Changed wording regarding power supply following the Simplified ADS4449 EVM Block Diagram image............. • Changed description on the J2 row of the ADS4449 EVM Connectors table. Revision History SLAU485A –...
  • Page 13 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions.
  • Page 14 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 15 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
  • Page 16 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2015, Texas Instruments Incorporated...
  • Page 17 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.

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