Overview
1
Overview
The ADSxx54EVM-PDK is a platform for evaluation of the ADSxx54 analog-to-digital converter (ADC).
The evaluation kit combines the ADSxx54EVM board with a serial data capture card (SDCC) controller
board. The SDCC controller board consists of a TI Sitara embedded microcontroller (
) and a field
programmable gate array (FPGA). The SDCC controller board provides an interface from the EVM to the
computer through a universal serial bus (USB) port. The included software communicates with the SDCC
controller board platform, and the SDCC board provides the power and digital signals used to
communicate with the ADSxx54EVM board. These demonstration kits include the ADSxx54EVM board,
the SDCC controller board, a microSD memory card, and an A-to-micro-B USB cable.
1.1
ADSxx54EVM Features
•
Contains support circuitry as a design example to match ADC performance
•
3.3-V slave serial peripheral interface (SPI™)
•
Onboard 5-V analog supply
•
Onboard
(2.5-V) reference
•
Voltage reference buffering with
•
Onboard
(200-MHz bandwidth, 1-mA quiescent current) ADC input drivers
1.2
ADSxx54EVM-PDK Features
•
Jumper-selectable ±1 x V
ref
range or ±2 x V
ref
range.
•
USB port for computer interfacing
•
Easy-to-use evaluation software for Windows XP
®
, Windows 7
®
, Windows 8
®
operating systems
•
Data collection to text files
•
Built-in analysis tools including scope, FFT, and histogram displays
•
Complete control of board settings
2
EVM Analog Interface
The ADSxx54 is a dual-channel, simultaneous-sampling ADC that supports fully-differential analog inputs.
Each channel of the ADSxx54 uses a THS4521 fully-differential amplifier to drive the differential inputs of
the ADC. The ADSxx54EVM is designed for easy interfacing to multiple analog sources. SMA connectors
allow the EVM to have input signals connected through coaxial cables. In addition, header connectors JP1
through JP4 provide a convenient way to connect input signals. All analog inputs are buffered by
THS4521 high-speed, fully differential amplifier in order to properly drive the ADSxx54 ADC inputs.
3
SBAU209 – April 2014
ADS8354EVM-PDK and ADS7854EVM-PDK
Copyright © 2014, Texas Instruments Incorporated