Texas Instruments ADS8568EVM-PDK

Overview

ADS8568EVM-PDK from Texas Instruments is an evaluation module designed to accelerate development and performance validation of the ADS8568 - an 8-channel, simultaneous-sampling, 16-bit SAR ADC supporting true bipolar ±12 V input ranges, programmable internal buffered voltage reference, SPI/parallel digital interfaces, and hardware-mode static configuration. It enables rapid characterization in precision data acquisition systems for industrial test equipment and power monitoring.

For engineers reviewing the ADS8568EVM-PDK datasheet, ADS8568EVM-PDK pinout, ADS8568EVM-PDK application, or ADS8568EVM-PDK equivalent, this module delivers full signal chain visibility - including analog front-end amplifier drive (OPA2211), dual-supply decoupling (AVDD/DVDD/HVDD/HVSS), PHI controller USB-to-digital translation, real-time GUI-based time/frequency/histogram analysis, and jumper-selectable reference and interface modes.

Technical Context

The ADS8568EVM-PDK implements a complete evaluation platform centered on the ADS8568 ADC, interfacing via a 60-pin PHI connector (J10) that translates USB 2.0 into parallel or SPI signals. It supports both internal (REF6025-based) and external voltage reference selection via JP9, and provides eight independent SMA-input channels with configurable op-amp drive stages (OPA2211) per channel.

Dual power domains are maintained: low-voltage AVDD (5 V) and DVDD (3.3 V) generated from USB via TPS7A4700 LDO, while high-voltage HVDD (+15 V) and HVSS (–15 V) are supplied externally via terminal block J9. Digital control includes static configuration pins (e.g., ~PAR_SER, REFEN_~WR, RANGE_XCLK) monitored at test points J11 and managed by onboard EEPROM (BR24G32FVT-3AGE2) for EVM identification.

Key Specifications

Availability

ADS8568EVM-PDK is available at Aetrix Electronics and suitable for precision data acquisition, industrial sensor interface, and power quality monitoring applications requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for ADS8568EVM-PDK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision data converters and evaluation platforms.

The ADS8568EVM-PDK belongs to TI's Precision Data Acquisition Evaluation Module product line, engineered to simplify validation of high-resolution, multi-channel SAR ADCs in demanding industrial and test & measurement applications.

FAQ

What is the primary function of the ADS8568EVM-PDK?

The ADS8568EVM-PDK is a fully integrated evaluation module for the ADS8568 8-channel, 16-bit SAR ADC. It provides analog signal conditioning (via OPA2211 amplifiers), dual-domain power regulation (USB-derived low-voltage + external ±15 V high-voltage), digital interface translation (PHI controller), and Windows-based GUI software for real-time waveform capture and spectral analysis - all in one board to accelerate system-level validation of precision data acquisition designs.

Does the ADS8568EVM-PDK include the ADS8568 IC?

Yes, the ADS8568EVM-PDK includes the ADS8568SPM package of the ADS8568 ADC mounted on the evaluation board. The device is soldered and fully integrated with supporting circuitry including decoupling capacitors, reference buffers (REF6025), level-shifting resistors, and interface routing to the PHI controller - enabling immediate functional testing without additional component assembly.

What software is required to operate the ADS8568EVM-PDK?

The ADS8568EVM-PDK requires the official Texas Instruments ADS8568EVM GUI software, compatible with 64-bit Windows 7, 8, and 10. Installation includes LabVIEW Run-Time Engine and a custom USB device driver. The GUI provides synchronized multi-channel sampling visualization, time-domain plots, FFT-based frequency analysis, histogram-based INL/DNL estimation, and global ADC configuration controls - all directly tied to the ADS8568EVM-PDK hardware resources.

Can the ADS8568EVM-PDK operate without an external ±15 V supply?

No - the ADS8568EVM-PDK requires external ±15 V supplies (HVDD = +15 V, HVSS = –15 V) applied via terminal block J9 to power the ADS8568's high-voltage analog front end. While AVDD (5 V) and DVDD (3.3 V) are derived from USB via the PHI controller, the ±15 V rails are mandatory for full-scale ±12 V input operation and are not generated onboard. Omitting them limits functionality and risks improper ADC biasing.

How does the PHI controller interface with the ADS8568EVM-PDK?

The PHI controller connects to the ADS8568EVM-PDK via the 60-pin J10 header, translating USB 2.0 commands into parallel or SPI digital signals for the ADS8568. It also supplies 5.5 V (for AVDD generation) and DVDD, routes I²C to the onboard EEPROM for EVM identification, and drives static configuration pins (e.g., ~PAR_SER, REFEN_~WR). All digital timing, conversion triggers (CONVSTA–D), and data reads are coordinated through this controller under GUI command.