Overview
2
SLAU630A – August 2015 – Revised August 2016
Copyright © 2015–2016, Texas Instruments Incorporated
ADC31JB68 Evaluation Module
1
Overview
The ADC31JB68EVM is an evaluation board used to evaluate the ADC31JB68 analog-to-digital converter
(ADC) from Texas Instruments. The ADC31JB68 is a single-channel 16-bit ADC capable of operating at
sampling rates up to 500 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 registers programming via USB connector and FTDI USB-to-SPI bus translator
The ADC31JB68EVM 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 ADC31JB68EVM 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:
•
ADC31JB68EVM Evaluation Board (EVM)
•
Power cable with barrel connector (for connection of EVM to +5-V bench power supply)
•
Mini-USB cable
CAUTION
Ensure that the power cable is connected to the bench power supply and
EVM with the correct polarity.
Connecting the cable with an incorrect polarity
may damage the EVM. Testing the voltage at the output of the power cable (at
the barrel connector) is recommended before connecting the power cable to the
EVM.
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 in order to achieve the best performance.
•
TSW14J56EVM Data Capture Board, power cable and Mini-USB cable
•
Computer running Microsoft
®
Windows
®
8, Windows 7, or Windows XP
•
2x (or dual-channel) bench power supply capable of +5 V, 2 A
•
Two 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 & Schwarz SMA100A
•
Bandpass filter for analog input (between 100–500 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