Overview
1
Overview
The ADSxx53EVM-PDK is a platform for evaluation of the ADSxx53 analog-to-digital converter (ADC).
The evaluation kit combines the ADSxx53EVM board with a simple capture card controller board. The
simple capture card controller board consists of a TI Sitara embedded microcontroller (
) and a
field programmable gate array (FPGA). The simple capture card board provides an interface from the
EVM to the computer through a universal serial bus (USB) port. The included software communicates with
the simple capture card controller board platform, and the simple capture card board provides the power
and digital signals used to communicate with the ADSxx53EVM board. These demonstration kits include
the ADSxx53EVM board, the simple capture card controller board, a microSD memory card, and an A-to-
micro-B USB cable.
1.1
ADSxx53EVM 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
(205-MHz BW, 1-mA quiescent current) ADC operational amplifier input drivers
1.2
ADSxx53EVM-PDK Features
•
Jumper-selectable (0 to 1 × V
ref
range or 0 to 2 × 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 ADSxx53 is a dual-channel, simultaneous-sampling ADC that supports single-ended and pseudo-
differential analog inputs. Each channel of the ADSxx53 uses a OPA2836 dual operational amplifier to
drive the inputs of the ADC. The positive input terminals of each ADC are driven by the OPA836
operational amplifier configured in the inverting configuration. The negative input terminals of each ADC
are driven by the OPA836 in the buffer configuration. The ADSxx53EVM 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 and JP2 provide a convenient way to connect input
signals.
illustrates the ADSxx53EVM analog interface input connections.
Windows XP, Windows 7, Windows 8, Excel are registered trademarks of Microsoft Corporation.
SPI is a trademark of Motorola Inc.
I
2
C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.
4
ADS8353EVM-PDK and ADS7853EVM-PDK
SBAU210A – June 2014 – Revised August 2014
Copyright © 2014, Texas Instruments Incorporated