Texas Instruments ADS8558EVM

Overview

ADS8558EVM from Texas Instruments is an evaluation module designed to characterize the ADS8558 - a 6-channel, simultaneous-sampling, 12-bit SAR ADC supporting true bipolar ±12 V input ranges, programmable internal voltage reference, parallel (word/byte) and SPI interfaces, and hardware/software configuration modes.

For engineers reviewing the ADS8558EVM datasheet, ADS8558EVM pinout, ADS8558EVM application, or ADS8558EVM equivalent, this module enables rapid performance validation of the ADS8558 in high-precision data acquisition systems - including dynamic testing (SNR, THD, SFDR), time/frequency domain analysis, and multi-channel signal integrity verification under real-world analog drive and power supply conditions.

Technical Context

The ADS8558EVM implements a two-board modular architecture: one board hosts the ADS8558 ADC with precision analog front-end circuitry (SMA-input op-amp buffers, ±15 V to ±12 V LDO regulation via TPS7A3001/TPS7A4700), and the other is the Precision Host Interface (PHI) controller that translates USB 2.0 to parallel/SPI digital communication.

It supports full-family interoperability: ADS8555 (16-bit), ADS8556 (16-bit), ADS8557 (14-bit), and ADS8558 (12-bit) are pin-for-pin compatible, enabling hardware reuse via ADC replacement and EEPROM reprogramming - with verified support for 730 kSPS parallel and 500 kSPS serial data rates specific to the ADS8558.

Key Specifications

Availability

ADS8558EVM is available at Aetrix Electronics and suitable for high-precision data acquisition, industrial process monitoring, and test & measurement equipment requiring stable component supply, full-family ADC evaluation flexibility, and traceable lab-grade validation infrastructure.

Supply support for ADS8558EVM 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, embedded processing, and high-performance data conversion technologies.

The ADS8558EVM belongs to TI's precision data acquisition evaluation platform family, engineered to accelerate development of multi-channel, simultaneous-sampling systems for industrial automation, energy metering, and power quality analyzers.

FAQ

What is the primary function of the ADS8558EVM?

The ADS8558EVM is a dedicated evaluation module for the ADS8558 12-bit, 6-channel simultaneous-sampling SAR ADC. It provides complete analog signal conditioning (±12 V input, op-amp buffers), regulated power generation (AVDD, HVDD, HVSS, DVDD), dual digital interfaces (parallel and SPI), and Windows-based GUI software for real-time time-domain, frequency-domain (FFT), and histogram analysis - all validated for direct use with the ADS8558 device.

Does the ADS8558EVM support other ADCs besides the ADS8558?

Yes - the ADS8558EVM is fully compatible with the entire ADS855x family due to pin-for-pin equivalence: ADS8555 (16-bit), ADS8556 (16-bit), ADS8557 (14-bit), and ADS8558 (12-bit). To evaluate another device, desolder the installed ADC, replace it with the target part, and reprogram the onboard EEPROM using the GUI's "Load EEPROM" tool - as documented in Section 6.3 of the SLAU298A user's guide.

What power supplies are required to operate the ADS8558EVM?

The ADS8558EVM requires external ±15 V DC supplies connected to screw terminal J1. These feed onboard LDOs (TPS7A3001 for HVSS, TPS7A4700 for AVDD/HVDD) to generate the ADC's four critical rails: AVDD = 5 V, HVDD = 12 V, HVSS = –12 V, and DVDD = 3.3 V (derived from USB). No ±15 V supplies are included - low-noise lab sources like Keysight E3632A are recommended.

How is the voltage reference configured on the ADS8558EVM?

Voltage reference selection is controlled by jumper JP06: INT position enables the ADS8558's internal buffered reference, while EXT connects the external REF5025 2.5-V reference IC. The GUI software must match this setting - default startup assumes INT mode, so JP06 must be set to INT unless external reference operation is explicitly intended and configured.

What software is needed to run the ADS8558EVM?

The ADS8558EVM requires the official Texas Instruments ADS8555EVM GUI software (compatible with ADS8558), built on LabVIEW Runtime Engine and supporting Windows 7/8/10 (64-bit). Installation includes driver setup and places the executable in C:\Program Files (x86)\Texas Instruments\ADS8555EVM. The GUI provides register-level control, global settings (interface mode, sampling rate, range), and analysis pages (time domain, FFT, histogram).