Overview
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
2
ADC14X250EVM Evaluation Module
SLAU625 – November 2015
Copyright © 2015, Texas Instruments Incorporated
