Texas Instruments ADC32RF5xEVM Manual de usuario

User’s Guide

ADC32RF5xEVM User Guide

Table of Contents

1 Overview..................................................................................................................................................................................2

1.1 Required Hardware............................................................................................................................................................ 2

1.2 Required Software............................................................................................................................................................. 2

1.3 Evaluation Board Feature Identification............................................................................................................................. 3

2 Quick Start Guide....................................................................................................................................................................4

2.1 Introduction........................................................................................................................................................................ 4

2.2 Software Setup...................................................................................................................................................................4

2.2.1 ADC32RF5xEVM GUI Installation............................................................................................................................... 4

2.2.2 High Speed Data Converter Pro GUI Installation........................................................................................................ 4

2.3 Hardware Setup................................................................................................................................................................. 5

3 Quick Start Procedure for Bypass Mode..............................................................................................................................6

3.1 2x Averaging in Bypass Mode............................................................................................................................................6

4 Quick Start Procedure for Complex Decimation Mode....................................................................................................... 8

4.1 8x Complex Decimation..................................................................................................................................................... 8

4.2 128x Complex Decimation............................................................................................................................................... 10

5 Operating Modes...................................................................................................................................................................14

5.1 Input Comparison.............................................................................................................................................................14

5.2 Quad ADC Mode..............................................................................................................................................................15

6 Revision History................................................................................................................................................................... 15

A Appendix...............................................................................................................................................................................16

A.1 References...................................................................................................................................................................... 16

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ADC32RF5xEVM User Guide 1

1 Overview

The ADC32RF5xEVM is an evaluation module (EVM) designed to evaluate the ADC32RF5x family of high-

speed, JESD204B interface ADCs. The EVM includes an onboard clocking solution (LMK04832), transformer-

coupled analog inputs, full power solution, and easy-to-use software GUI and USB interface. The following

features apply to this EVM:

• Transformer-coupled signal input network allowing a single-ended signal source from 30 MHz to 3000 MHz.

• LMK04832 system clock generator that generates field-programmable gate array (FPGA) reference clocks for

the high-speed serial interface.

The ADC32RF5xEVM is designed to work seamlessly with TI's TSW14J58 EVM JESD204B/C data capture/

pattern generator card, through the High Speed Data Converter Pro (HSDC Pro) software tool for high-speed

data converter evaluation. It is also designed to work with many of the developments kits from leading FPGA

vendors that contain an FMC or FMC+ connector.

1.1 Required Hardware

The following is included in the EVM evaluation kit:

• ADC32RF5x evaluation board (EVM)

• Power supply cable

• USB 2.0 TypeA to Mini-B cable

The following list of equipment are items that are not included in the EVM evaluation kit, but are required items

(in order to achieve the best performance) for the evaluation of this product:

• TSW14J58 EVM data capture board

• 6-V, 5-A power supply

• 12-V, 2-A power supply

• USB 2.0 TypeA to Mini-B cable

• USB 3.0 TypeA to Micro-B cable

• Low-noise signal generator (qty. 2) (Examples: HP HP8644B, Rohde & Schwarz SMA100A)

• Bandpass filter for clock input

• Bandpass filter for desired analog input

• High quality signal path cables

1.2 Required Software

The following software is required to operate the ADC32RF5x EVM and is available online. See the References

section for links.

• ADC32RF5x EVM GUI

The following software is required to operate the TSW14J58 EVM and is available online. See the References

section for links.

• High Speed Data Converter Pro, version 5.2 or higher

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1.3 Evaluation Board Feature Identification

The EVM features are shown in Figure 1-1 .

Figure 1-1. EVM Features

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ADC32RF5xEVM User Guide 3

2 Quick Start Guide

The EVM test procedure to obtain a valid data capture from the ADC32RF5xEVM using the TSW14J58EVM

data capture board is provided in this section. This is the starting point for all evaluations.

2.1 Introduction

The ADC32RF5xEVM includes the ADC32RF5x analog-to-digital converter with JESD204B interface, LMK04832

clocking chip, and an FMC connector suitable for connection to readily-available FPGA development boards or

to the TSW14J58EVM data capture board.

The FPGA on the capture card requires a device clock and SYSREF signal, the LMK04832 clock device

supplies these signals to the FMC connector for that purpose, as well as supplying SYSREF to the ADC.

This document conveys all information needed to bring up both the ADC32RF5xEVM and TSW14J58EVM data

capture board, and get a valid data capture with good FFT results.

The JESD204B interface requires a number of important parameters to be decided in advance of setting up

the data link, such as; number of lanes, number of converters, number of samples per frame, and a value K

number of frames per multi-frame, among other parameters. Both sides of a JESD204B link must be set up with

the same values for all these parameters, or else the FPGA that receives the data is not able to establish a

synchronized link.

Note

Getting these parameters inconsistent between ADC and FPGA is perhaps the biggest single reason

for an EVM setup to not function as expected.

The GUI installers that come with the ADC32RF5x and the TSW14J58EVM come with configuration files that

are meant to enable quick initial setup of a number of basic configurations. TI strongly suggests setting up the

EVM and data capture board with a configuration described in this document and getting a working setup before

modifying the configuration to be closer to what the end-application requires. In this way, the user can know that

the hardware is functioning and that there is a working configuration that they can go back to in the event of

difficulty developing their own configuration.

This document introduces the software that must be installed on a PC, and presents a basic setup for the

Bypass and DDC modes available in the ADC32RF5xEVM. The operating modes explained in this document

are:

•Bypass Mode

–2x Averaging

•DDC (Decimation)

–8x complex decimation

–128x complex decimation

2.2 Software Setup

The proper software must be installed before beginning evaluation. See Required Software for a list of

the required software. To avoid potential issues, the software should be installed before connecting the

ADC32RF5xEVM and TSW14J58EVM to the computer for the first time. Appendix A.1 contains links to find

the software on the TI website.

2.2.1 ADC32RF5xEVM GUI Installation

1. Download the GUI installer from the EVM tool folder at https://www.ti.com/tool/ADC32RF54EVM

2. Extract the installation files from the downloaded zip file.

3. Run TI-ADC32RF5x.exe and follow the procedure of the installer to complete installation.

2.2.2 High Speed Data Converter Pro GUI Installation

High Speed Data Converter Pro GUI (HSDC Pro) is used to control the TSW14J58EVM and analyze the

captured data. Please see the HSDC Pro GUI user’s guide (SLWU087) for more information.

1. Download HSDC Pro GUI installer.

2. Extract the installation files from the downloaded zip file.

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3. Run setup.exe and follow the installation prompts to complete installation.

2.3 Hardware Setup

A typical test setup using the ADC32RF5xEVM and TSW14J58EVM is shown in Figure 2-1.

Figure 2-1. ADC32RF5xEVM Bench Setup Block Diagram

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ADC32RF5xEVM User Guide 5

3 Quick Start Procedure for Bypass Mode

Bypass mode is the default operating mode for the ADC32RF5x device family. When operating in this mode, the

digital decimation filters that the ADC32RF5x offers is bypassed. Additionally, the user has the option to enable

averaging of each internal pair of ADCs per individual channel. Operating in bypass mode without averaging

provides the lowest power consumption for ADC32RF5x devices.

TSW14J58EVM

1. Connect the ADC32RF5xEVM to the TSW14J58EVM using the FMC connectors.

2. Connect a 6V, 5A minimum power supply to connector J2.

3. Connect a USB 2.0 TypeA to Mini-B cable to connector J23.

4. Connect a USB 3.0 TypeA to Micro-B cable to connector J1.

5. Turn on the power supply and toggle the power switch (SW5) to the "ON" position. The fan should start

spinning and the current draw should settle around 2.1 A.

ADC32RF5xEVM

1. Connect a 12 V , 2 A minimum power supply to the connector J11.

2. Connect a USB 2.0 TypeA to Mini-B cable to connector J12.

3. Connect a filtered 2.56 GHz clock signal (+10 dBm) to input J1 (EXTCLK), then enable the signal generator

output.

4. Connect a filtered 300 MHz input signal (+10 dBm) to input J3 (INA1), then enable the signal generator

output.

GUI Setup

1. Open High Speed Data Converter Pro (HSDC Pro) and select the TSW14J58. If no device is found, verify

that power is on and both USB cables are connected.

2. Select the device firmware labeled ADC32RF5x_8224_12G-16G and update the firmware by pressing Yes

on the pop-up window and waiting for the Downloading Firmware message to finish.

3. Enter 2.56 G into the ADC Output Data Rate field. A message will appear stating "New lane rate is 12.8G

due to ADC Output Data Rate change". When this appears, press OK.

4. Enter 300 M into the ADC Input Target Frequency field and tick the checkbox "Auto Calculation of Coherent

Frequencies". You will notice that the 300M changes to 300.039 M.

5. Open the ADC32RF5x GUI. Verify that the green USB Status indicator is illuminated as shown in Figure

3-1 below. If the indicator is red (simulation mode), verify that the USB cable is connected and that the

ADC32RF5xEVM is powered on and press the Reconnect USB button.

Figure 3-1. USB Status Indicator

3.1 2x Averaging in Bypass Mode

This mode uses internal averaging to provide better performance at the tradeoff of higher power consumption.

Procedure

1. In the bypass mode box of the GUI, ensure that the settings match those shown in Figure 3-2

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Figure 3-2. Bypass Mode Settings

2. Once these settings are verified, press the Device Bringup button.

3. Wait until after the message Device Bringup Completed appears in the Log.

4. Under the Analog and Clock tab, toggle Dither Enable to the off position.

5. In HSDC Pro, press the Capture button. You should now see something similar to Figure 3-3.

6. Adjust signal generator output such that the measured fundamental power in HSDC Pro is at the user's

desired level. (shown below is -12 dBFs)

Figure 3-3. 300.039 MHz, bypass mode, 2x averaging, dither off

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ADC32RF5xEVM User Guide 7

4 Quick Start Procedure for Complex Decimation Mode

The ADC32RF5x device family provides up to two digital down converters (DDC) per ADC channel supporting a

wide range of instantaneous bandwidth IBW coverage - from single wide band mode with 8x complex decimation

to up to two narrow band channels with as high as 128x complex decimation.

When operating in complex decimation mode, the appropriate NCO is used as an intermediate frequency to

the complex mixer. Similar to the bypass operating mode, the user has the option to enable averaging of each

internal pair of ADCs. This section will provide two example configurations for operating the ADC32RF5xEVM in

8x and 128x decimation modes.

4.1 8x Complex Decimation

This example uses a coherent 790 MHz input on the channel A input with the ADC in a 1x averaging mode with

dither enabled.

Procedure

1. In the Bypass Mode box, use the DDC dropdown to change to Complex Mode. The usser will notice the

box title changes to Complex Mode to reflect the current DDC operating mode.

2. Use the Decimation dropdown to change the decimation to 8.

3. Set the LMFSHd setting to 4-4-2-1-0.

4. Set the channel INA1 NCO0 and NCO1 to 800 (MHz).

5. Change LMK divider from 8 to 16.

6. Once these settings are verified and match Figure 4-1, press the Device Bringup button.

Figure 4-1. ADC32RF5xEVM GUI, 8x complex decimation, 800 MHz NCO

7. Wait until after the message Device Bringup Completed appears in the Log.

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8. In HSDC Pro, connect to the TSW14J58EVM and select ADC32RF5x_4421_6G-8G as the INI file shown in

Figure 4-2.

Figure 4-2. ADC32RF5x_4421_6G-8G INI file

9. Update the firmware by pressing Yes on the pop-up window and waiting for the Downloading Firmware

message to finish.

10. Open the Additional Device Parameters menu by clicking on the gear next to the ADC Output Data Rate

field.

11. Check the tickbox labeled "Enable?" and then enter the parameters shown in Figure 4-3.

Figure 4-3. Additional Device Parameters , 8x complex decimation

12. Once completed, press OK.

13. Check the tickbox labeled Auto Calculation of Coherent Frequencies and you will see the ADC Input

Target Frequency change from 790 M to the coherent frequency. Set the signal generator connected to

channel A input to this coherent frequency.

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ADC32RF5xEVM User Guide 9

14. Change the view window from Real FFT to Complex FFT and select channel 1/4.

15. Press the Capture button. You should now see something similar to Figure 4-4.

16. Adjust signal generator output such that the measured fundamental power in HSDC Pro is at the user's

desired level.

Figure 4-4. 789.995 MHz input, 8x complex decimation, 1x averaging, dither on

4.2 128x Complex Decimation

This example uses a coherent 1.003 GHz input on the channel B input with the ADC in a 2x averaging mode

with dither enabled.

Procedure

1. Under the Analog and Clock tab, toggle Dither Enable to the on position and set Dither Amplitude_1 to 3.

2. In the Bypass Mode box, use the DDC dropdown to change to Complex Mode. You will notice that the

box title changes to Complex Mode to reflect the current DDC operating mode. Press the Home Button to

change back to the home screen.

3. Set Average to 2x and change ADC Mode to Dual with averaging.

4. Use the Decimation dropdown to change the decimation to 128.

5. Set the LMFSHd setting to 1-4-8-1-0.

6. Set the channel INB1 NCO0 and NCO1 to 1000 (MHz).

7. Change LMK divider from 8 to 32.

8. Once these settings are verified and match Figure 4-5, press the Device Bringup button.

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