1 ADS704X-5XEVM-PDK Overview

The ADS704X-5XEVM-PDK is a platform for evaluating the performance of the ADS704x and ADS705x family of ADCs. The ADS704X-5XEVM-PDK includes the following features:

• ADS704X-5XEVM for diagnostic testing and accurate performance evaluation of each ADC on the board
• USB powered—no external power supply is required
• A precision host interface (PHI) controller that provides a convenient communication interface to each ADC over USB 2.0 (or higher) for power delivery as well as digital input and output
• Microsoft®Windows® 8 and Windows® 10 operating systems
• Easy-to-use evaluation software for 64-bit Microsoft® Windows®
• A software suite that includes a graphical user interface (GUI) and tools for data capture, histogram analysis, and spectral analysis. This suite also has a provision for exporting data to a text file for post-processing

The PHI board primarily serves three functions:

• Provides a communication interface from the EVM to the computer through a USB port
• Provides the digital input and output signals necessary to communicate with each ADC
• Supplies power to all active circuitry on the ADS704X-5XEVM board

Each ADS704X-5XEVM board includes the peripheral analog circuits and components required to extract optimum performance from the ADC. Moreover, each ADS704X-5XEVM includes two complete ADC signal chains: one that supports a single-ended input ADC (see Section 2.1.1), and another that supports a differential input ADC (see Section 2.1.2). Table 1-1 defines which ADCs are populated by default on each EVM.

Additionally, the ADS704X-5XEVM includes the following features:

• External signal source from subminiature version A (SMA) connectors or header pins
• Option to use external power supplies
• Serial interface header for easy connection to the PHI controller
• Pin connections to monitor digital signals with a logic analyzer
• Two ultra-low noise, low-dropout (LDO) regulators for excellent single-supply regulation of all analog circuits
• Accommodates all package options for 14 different ADCs using four different device footprints, as per Table 1-2