Texas Equipment ADC14X250EVM User manual

User's Guide
SLAU625–November 2015
ADC14X250EVM Evaluation Module
This user's guide describes the characteristics, operation, and use of the ADC14X250EVM Evaluation
Module (EVM). This document includes a quick-start guide, directions for optimizing evaluation results, a
description of the software, alternate hardware configurations, and jumper, connector, and LED
descriptions.
Contents
1 Overview...................................................................................................................... 2
2 Quick Start Guide............................................................................................................ 4
3 Optimizing Evaluation Results............................................................................................ 10
4 Software Description ...................................................................................................... 11
5 Alternate Hardware Configurations ...................................................................................... 13
6 Jumper, Connector, and LED Descriptions............................................................................. 14
List of Figures
1 EVM Feature Locations..................................................................................................... 3
2 Quick Start Test Setup...................................................................................................... 5
3 HSDC Pro GUI Main Panel................................................................................................. 7
4 Data Capture Results from Quick Start Procedure...................................................................... 8
5 ADC14X250EVM GUI ..................................................................................................... 11
6 Low Level View Tab ....................................................................................................... 12
List of Tables
1 Quick Start Performance Measurements................................................................................. 8
2 Troubleshooting Tips........................................................................................................ 9
3 HSDC Pro Options for Optimal Analysis Results ...................................................................... 10
4 ADC14X250 GUI Tab Descriptions...................................................................................... 11
5 Low Level View Controls.................................................................................................. 12
6 Recommended LMK04828 Configurations ............................................................................. 13
7 Jumper Descriptions and Default Settings.............................................................................. 14
8 Connector Descriptions.................................................................................................... 14
9 LED Descriptions........................................................................................................... 14
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Overview www.ti.com
1 Overview
The ADC14X250EVM is an evaluation board used to evaluate the ADC14X250 analog-to-digital converter
(ADC) from Texas Instruments. The ADC14X250 is a single channel, 14-bit analog-to-digital converter
(ADC), capable of operating at sampling rates up to 250 Mega Samples Per Second (MSPS) with outputs
featuring a standard JESD204B high-speed serial interface.
This evaluation board also includes the following important features:
• Transformer-coupled signal input network allowing a single-ended signal source
• LMK04828 system clock generator that generates the FPGA reference clock for the high-speed serial
interface
• Default transformer-coupled clock input network to test the ADC performance with a very low-noise
clock
• High-speed serial data output over a standard FMC connector
• Device register programming via USB connector and FTDI USB-to-SPI bus translator
The ADC14X250EVM is designed to work seamlessly with the TSW14J56EVM, Texas Instruments’
JESD204B data capture card and the High Speed Data Converter Pro (HSDCPro) software tool for high-
speed data converter evaluation. The ADC14X250EVM is also compatible with many of the development
kits from leading FPGA vendors that contain an FMC connector.
1.1 Required Hardware
The following equipment is included in the EVM evaluation kit:
• ADC14X250EVM evaluation board (EVM)
• Flying lead-to-barrel connector power supply cable
• Mini-USB cable
The following list of equipment are items that are not included in the EVM evaluation kit but are items
required for evaluation of this product to achieve the best performance:
• TSW14J56EVM Kit: Data capture board, 5-V power supply and mini-USB cable
• 5-V power supply capable of sourcing 2 A
• Computer running Microsoft®Windows®7 or Windows XP
• Two (2) low-noise signal generators
Recommendations:
– RF generator, > 17 dBm, < –40-dBc harmonics, < 500 fs jitter 20 kHz–20 MHz, 10 MHz–2 GHz
frequency range
– Examples: TSW2170EVM, HP HP8644B, Rohde and Schwarz SMA100A
• Bandpass filter for analog input (between 125–250 MHz).
Recommendations:
– Bandpass filter, ≥60-dB harmonic attenuation, ≤5% bandwidth, > 18-dBm power, < 5-dB insertion
loss
– Examples: Trilithic 5VH-series Tunable BPF, K&L BT-series Tunable BPF, TTE KC6 or KC7-series
Fixed BPF
• Bandpass filter for clock input (250 MHz)
Recommendations:
– Bandpass filter, ≥60-dB harmonic attenuation, ≤5% bandwidth, > 18-dBm power, < 5-dB insertion
loss
– Examples: Trilithic 5VH-series Tunable BPF, K&L BT-series Tunable BPF, TTE KC6 or KC7-series
Fixed BPF
• Signal path cables, SMA and/or BNC with BNC-to-SMA adapters
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Analog Input
ADC
USB Register
Configuration
Connector
CLK Input
FMC Connector
(Back-side)
LMK
Input Power Connector (+5V)
SYSREF Input
(Optional)
EXTREF Input
(Optional LMK04828
input reference)
SYNC
LED
VIN+
VIN-
REFCLK Input
(Optional LMK04828
output reference)
www.ti.com Overview
1.2 Required Software
The following software is required to operate the ADC14X250EVM and available online. See the
References section for links.
• ADC14X250_GUI_Installer.zip
The following software is required to operate the TSW14J56EVM and available online. See the
Section 1.4 section for links.
•High Speed Data Converter Pro software
1.3 Evaluation Board Feature Identification Summary
Figure 1. EVM Feature Locations
1.4 References
1. ADC14X250EVM GUI software, schematics, layout, BOM, available at: www.ti.com/tool/adc14x250evm
2. ADC14X250 datasheet, available at www.ti.com/product/adc14x250
3. LMK04828 datasheet, available at www.ti.com/product/lmk04828
4. TSW14J56EVM User’s Guide, available at www.ti.com/tool/TSW14J56EVM
5. High Speed Data Converter Pro User’s Guide, available at www.ti.com/tool/dataconverterpro-sw
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Quick Start Guide www.ti.com
2 Quick Start Guide
The EVM test procedure is explained in this section. Directions for obtaining a valid data capture from the
ADC14X250EVM using the TSW14J56EVM capture card are provided. This should be the starting point
for all evaluations.
2.1 Software Installation
The proper software must be installed before beginning evaluation. See the Required Software section for
a list of the required software. The References section of this document contains links to find the software
on the TI website.
CAUTION
The software must be installed before connecting the ADC14X250EVM
and TSW14J56EVM to the computer for the first time.
2.1.1 ADC14X250 GUI Installation
The ADC14X250 GUI is used to control the ADC14X250EVM. It must be used to properly configured the
devices on the EVM:
1. Download the GUI from the TI website. The Section 1.4 section of this document contains a link to find
the software on the TI website.
2. Extract the files from the .zip file.
3. Run setup.exe and follow the installation prompts.
2.1.2 High Speed Data Converter Pro GUI Installation
High Speed Data Converter Pro (HSDC Pro) is used to control the TSW14J56 and analyze the captured
data. See the HSDC Pro user’s guide (SLWU087) for more information.
1. Download the HSDC Pro from the TI website. The Section 1.4 of this document contains a link to find
the software on the TI website.
2. Extract the files from the zip file.
3. Run setup.exe and follow the installation prompts.
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Analog
Input
6dB, 50Ÿ
Attenuator
Analog Input
Low Noise
Signal Generator
Clock Input
Low-Noise
Signal Generator
Mini-USB Cable
+5V Power Supply
70MHz
Bandpass
Filter
250MHz
Bandpass
Filter
PC Computer
Running HSDC Pro
Clock
Input
ADC EVM TSW14J56EVM
Power
Switch
OFF ON
70MHz, +10dBm
250MHz, +12dBm
Mini-USB Cable
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+5V, >=2A
www.ti.com Quick Start Guide
2.2 Hardware Setup Procedure
A typical test setup using the ADC14X250EVM and TSW14J56EVM is shown in Figure 2. This is the test
setup used for the quick-start procedure. The rest of this section describes the hardware setup steps.
Figure 2. Quick Start Test Setup
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