Texas Instruments AFE5801EVM User Manual
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Texas Instruments AFE5801EVM User Manual

Texas Instruments AFE5801EVM User Manual

For afe5801 8-channel variable gain amplifier (vga) with octal high-speed adc
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AFE5801 8-Channel Variable Gain Amplifier (VGA) with
The AFE5801EVM is an evaluation tool designed for the ultrasound analog front-end (AFE) device
AFE5801. In order to deserialize the outputs of AFE5801, an ADSDeSer-50EVM or TSW1250EVM is
needed during the evaluation.
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SLOU257A - October 2009 - Revised July 2011
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AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC
Copyright © 2009-2011, Texas Instruments Incorporated
SLOU257A - October 2009 - Revised July 2011
Octal High-Speed ADC
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User's Guide
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Summary of Contents for Texas Instruments AFE5801EVM

  • Page 1: Table Of Contents

    AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC The AFE5801EVM is an evaluation tool designed for the ultrasound analog front-end (AFE) device AFE5801. In order to deserialize the outputs of AFE5801, an ADSDeSer-50EVM or TSW1250EVM is needed during the evaluation.
  • Page 2 Analysis of Non-Coherent Sampled Data. (a) No window applied; (b) Hanning window applied. List of Tables ......Channel-to-Channel Matching Between the AFE5801EVM and ADSDeSER-50EVM SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright ©...

  • Page 3: Introduction

    AFE5801 includes an 8-channel voltage-Controlled-Amplifier (VCA) with digital control and an 8-channel 65MSPS analog-to-digital converter (ADC). The outputs of the ADC are 8-channel LVDS outputs which should be deserialized by the ADSDeSer-50EVM or TSW1250EVM. The AFE5801EVM provides an easy way to examine the performances and functionalities of AFE5801.

  • Page 4: Afe5801Evm Led Locations

    Introduction www.ti.com LED 2 LED 1 Figure 1. AFE5801EVM LED Locations SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 5: Board Configuration

    Board Connections Overview Input Signals Low Jitter Clk In Ext Clk In Figure 2. AFE5801EVM TOP View AFE/TSW Adapter Connector Figure 3. AFE5801EVM BOTTOM View SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright ©...

  • Page 6: I/O And Power Connectors

    Board Configuration www.ti.com I/O and Power Connectors The positions and functions of the AFE5801EVM connectors are discussed in this section. • Analog Inputs Ch1~Ch8 (J1~J8): Single-end analog signal is converted to differential signals by transformer. • Low Jitter CLK Source Input (J11): This input accepts clocks with low jitter noise, such as HP8644 output.

  • Page 7: Locations Of Jumpers, Headers And Switches On The Afe5801Evm

    Board Configuration www.ti.com Figure 4. Locations of Jumpers, Headers and Switches on the AFE5801EVM SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 8: Default Setup For Jumpers

    Remove the ferrite beads L1, L2, L3, L7 and L24, • SW1: Reset switch for AFE5801. SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 9: Test Points

    Multiple Test Points are provided on the EVM. Refer to the attached schematics for more information. Board Operation This chapter describes how to operate the AFE5801EVM for evaluation. Both software and hardware installation and operation are discussed. Software Installation and Operation The AFE5801EVM comes with a software install CD;...

  • Page 10: Found New Hardware Wizard (Next) Screen

    Click on "Continue Anyway" to continue with the installation. If Windows XP is configured to ignore file signature warnings, no message will appear. Figure 8. SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 11: Gui Startup

    Several different screens appear displaying the different modes (Figure 9 through Figure Figure 9. AFE5801EVM USB SPI Interface for General Registers. SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback...

  • Page 12: Afe5801Evm Usb Spi Fixed Gain Mode

    Board Operation www.ti.com Figure 10. AFE5801EVM USB SPI Fixed Gain Mode SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 13: Afe5801Evm Usb Spi Interface For Variable Gain Mode

    Figure 11. AFE5801EVM USB SPI Interface for Variable Gain Mode When AFE5801EVM is powered on, all registers have been set to their default modes. Refer to the datasheet for all default settings. It is recommended to restart the SPI software when AFE5801 is powered on in order to synchronize the AFE5801 register settings to the software displays.

  • Page 14: Hardware Setup

    LCLK Xilinx FCLK LCLK For example, when an analog signal is input at CH1 on the AFE5801EVM, the corresponding 12-bit digital output will be seen at CH8 on the ADSDeSER-50EVM when the AFE5801 is configured as 8-channel mode. Clock Selection AFE5801 is typically clocked through a transformer-based circuit.

  • Page 15: Data Analysis

    The jumpers P4, 5, 6 should be configured as Figure 13 shows (i.e., default setup for AFE5801EVM). In this mode, the transform-based differential clock is used. Data Analysis Based on the data file acquired by a logic analyzer, the performance of AFE5801 can be evaluated.

  • Page 16: Schematics, Layout, And, Bill Of Materials

    Schematics, Layout, and, Bill of Materials www.ti.com Schematics, Layout, and, Bill of Materials This chapter provides the schematics and layout of the AFE5801EVM as well as the bill of materials. Schematics Figure 14. Schematic Page 1 SLOU257A – October 2009 – Revised July 2011...
  • Page 17 Schematics, Layout, and, Bill of Materials www.ti.com Figure 15. Schematic Page 2 SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 18 Schematics, Layout, and, Bill of Materials www.ti.com Figure 16. Schematic Page 3 SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 19 Schematics, Layout, and, Bill of Materials www.ti.com Figure 17. Schematic Page 4 SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 20 Schematics, Layout, and, Bill of Materials www.ti.com Figure 18. Schematic Page 5 SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 21 1.8 V per the AFE5801 data sheet, (SLOS591). Figure 19. Schematic Page 6 SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 22: Pcb Layout

    Top Silk Screen Layer • Bottom Silk Screen Layer Figure 20. Top Layer Signal SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 23 Schematics, Layout, and, Bill of Materials www.ti.com Figure 21. Inner Layer 1 Ground SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 24 Schematics, Layout, and, Bill of Materials www.ti.com Figure 22. Inner Layer 2 Signal SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 25 Schematics, Layout, and, Bill of Materials www.ti.com Figure 23. Inner Layer 3 Power SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 26 Schematics, Layout, and, Bill of Materials www.ti.com Figure 24. Inner Layer 4 Ground SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 27 Schematics, Layout, and, Bill of Materials www.ti.com Figure 25. Bottom Layer Signal SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 28 Schematics, Layout, and, Bill of Materials www.ti.com Figure 26. Top Silk Screen Layer SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 29 Schematics, Layout, and, Bill of Materials www.ti.com Figure 27. Bottom Silk Screen Layer SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 30: Bill Of Materials

    LED, SMT, 0603, pure green, 2.03V Panasonic LNJ808R8ERA LED2, LED3 LED, SMT, 0603, orange, 1.8V SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 31 RF Transformer wideband, 0.03–125 MHz KFS2-M2.5 PEM NUTS UNINSTALLED 531220-2 P6, P9 SHUNT JUMPER 2POS SLOU257A – October 2009 – Revised July 2011 AFE5801 8-Channel Variable Gain Amplifier (VGA) with Octal High-Speed ADC Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 32: Typical Performance

    Typical Performance www.ti.com Typical Performance This chapter provides some typical performance of the AFE5801EVM to assist users to verify their setup. A typical performance plot of the AFE5801 is shown in Figure 28 with 30dB digital gain setting. Figure 28. Typical Performance of AFE5801. (a) Fixed Gain Mode; (b) Variable Gain Mode SLOU257A –...

  • Page 33: Appendix Atsw1250 For Evaluating Afe5801

    Figure 29. Connection Between TSW1250EVM and AFE5801 Clock source 40MHz Analog Signal to Filter Figure 30. Connection of the Instruments SLOU257A – October 2009 – Revised July 2011 TSW1250 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 34: Afe5801Evm Gui - Run Mode

    Launch AFE5801 GUI www.ti.com Launch AFE5801 GUI From PC click Start Menu→All Programs→Texas Instruments→AFE5801EVM USB SPI→AFE5801EVM USB SPI The GUI may be running if the following screen appears: Figure 31. AFE5801EVM GUI - RUN Mode In case the GUI is not running, then press the START button of the GUI to run it.

  • Page 35: Afe5801 Evm Gui - Start Button

    1. Click Init for TSW1250 to set the proper condition to work with TSW1250EVM. 2. Go to "TGC Register " Tab. 3. Press Variable button to change the mode to Fixed. SLOU257A – October 2009 – Revised July 2011 TSW1250 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 36: Afe5801Evm Gui - Variable Gain

    Launch AFE5801 GUI www.ti.com Figure 33. AFE5801EVM GUI - Variable Gain 4. Type 30 and press Write button. SLOU257A – October 2009 – Revised July 2011 TSW1250 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 37: Afe5801Evm Gui - Setting Fixed Gain

    Launch TSW1250 GUI www.ti.com Figure 34. AFE5801EVM GUI - Setting Fixed Gain At this stage the AFE5801 is ready. Launch TSW1250 GUI • Graphics User Interface (GUI) TSW1250 provides a GUI for users to evaluate the performance of the device. When GUI is started, the screen of the following figure appears.

  • Page 38: User Interface: Initial Setup Screen

    Check To calculate coherent Frequency Figure 36. User Interface: Step-by-Step Setup After completing the five steps indicated, the following figure appears: SLOU257A – October 2009 – Revised July 2011 TSW1250 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 39: User Interface: Frequency Load Value To Signal Generator

    Set the Frequency of the Clock Generator to 40 MHz. Set the Amplitude of the Clock Generator to 13 dBm. Figure 38. User Interface: Final Setup Screen SLOU257A – October 2009 – Revised July 2011 TSW1250 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 40: User Interface: Single Fft Format

    SLOU257A – October 2009 – Revised July 2011 TSW1250 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 41: User Interface: Time Domain Format

    The raw test sampled data can be saved to a file and processed by EXCEL or some other software. 4000 3500 3000 2500 2000 1500 1000 Figure 41. Plot of Saved Sample Data SLOU257A – October 2009 – Revised July 2011 TSW1250 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 42 SLOU257A – October 2009 – Revised July 2011 TSW1250 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 43: Appendix Btsw1100 For Evaluating Afe5801

    (i.e., containing only one column): 1981 1615 1292 1046 1113 1394 1737 2110 2477 2798 3044 3196 3237 3162 2978 SLOU257A – October 2009 – Revised July 2011 TSW1100 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 44 3162 2978 2702 2358 • The TI chip should be selected as TSW1000 in the interface shown in Figure SLOU257A – October 2009 – Revised July 2011 TSW1100 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...

  • Page 45: Tsw1100 Interface

    43(a). After appropriate FFT window applied, the correct analysis results is shown in Figure 43(b). Note that some DC artifact is noticed in (b). SLOU257A – October 2009 – Revised July 2011 TSW1100 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 46 Introduction www.ti.com Figure 43. Analysis of Non-Coherent Sampled Data. (a) No window applied; (b) Hanning window applied. SLOU257A – October 2009 – Revised July 2011 TSW1100 for Evaluating AFE5801 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated...
  • Page 47 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
  • Page 48 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.

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