Texas Instruments ADS8028EVM-PDK

Overview

ADS8028EVM-PDK from Texas Instruments is a complete evaluation system comprising the ADS8028EVM daughtercard, MMB0 digital sensor processor motherboard, and ADCPro™ evaluation software - designed to fully characterize the ADS8028 12-bit, 8-channel, 1-MSPS SAR ADC with internal 2.5-V reference and temperature sensor. It supports 1.8-V/3.3-V/5-V logic-level SPI interface and enables rapid validation of analog input conditioning, reference selection, and multi-channel acquisition in industrial data acquisition and sensor signal chain applications.

For engineers reviewing the ADS8028EVM-PDK datasheet, ADS8028EVM-PDK setup, ADS8028EVM-PDK hardware interface, or ADS8028EVM-PDK software integration, this page delivers verified pin-level connectivity details, jumper configuration guidance, ADCPro plug-in behavior, power sequencing requirements, and voltage reference routing options - all specific to the bundled EVM-PDK kit, not the standalone ADS8028 IC.

Technical Context

The ADS8028EVM-PDK implements a modular architecture where the MMB0 motherboard supplies regulated 3.3-V digital logic (BVDD), 5-V analog supply (AVDD), and SPI communication (FSX/CLKX/DX/DR/INT) to the ADS8028EVM via J4/J5/J7 headers. Analog inputs are routed through J-ANALOG (20-pin), supporting buffered channels 0–1 (OPA836 op amps) and direct-connected channels 2–7, with all odd pins tied to AGND for single-ended signal pairing.

Digital control is managed via a 16-bit SPI register accessible through ADCPro's Channel Selection and Controls tabs, enabling real-time configuration of channel enablement, reference source (internal REF or external), temperature averaging, and standby mode - with immediate effect on device operation without requiring reinitialization.

Key Specifications

Availability

ADS8028EVM-PDK is available at Aetrix Electronics and suitable for industrial sensor signal chain validation, precision data acquisition system prototyping, and SAR ADC performance benchmarking requiring stable component supply, full documentation traceability, and TI-validated reference design support.

Supply support for ADS8028EVM-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, embedded processing, and high-performance analog products for industrial, automotive, and communications markets.

The ADS8028EVM-PDK belongs to TI's Precision Data Acquisition EVM family, engineered to accelerate evaluation of high-speed SAR ADCs in real-world signal chains - emphasizing ease of use, flexible reference and power configuration, and seamless software-driven characterization.

FAQ

What is included in the ADS8028EVM-PDK kit?

The ADS8028EVM-PDK kit contains three integrated components: the ADS8028EVM daughtercard (featuring the ADS8028IRTJT ADC, two OPA836 input buffers, and REF5025 voltage reference), the MMB0 digital sensor processor motherboard (providing SPI interface, power regulation, and USB connectivity), and the ADCPro™ evaluation software with dedicated ADS8028 plug-in. No additional hardware or licenses are required to begin evaluation.

How do I configure the ADS8028EVM-PDK for 3.3-V logic operation?

To configure the ADS8028EVM-PDK for 3.3-V logic, set jumper J-3 to short (pins 1–2) on the ADS8028EVM, leave J-1 and J-5 open, and ensure MMB0 jumpers J13B is shorted (to deliver 3.3-V power to the daughtercard) while J13A remains open. This aligns BVDD with the MMB0's 3.3-V digital rail and enables proper SPI communication between the MMB0 and ADS8028EVM.

Can the ADS8028EVM-PDK operate without the MMB0 motherboard?

No - the ADS8028EVM-PDK is defined as the integrated system of ADS8028EVM + MMB0 + ADCPro. While the ADS8028EVM daughtercard alone can be used with external controllers, the ADS8028EVM-PDK specifically requires the MMB0 for power delivery, SPI signaling, and USB-based host communication. Standalone operation bypasses the PDK's validated architecture and invalidates its documented setup procedures and software integration.

How does the internal temperature sensor function on the ADS8028EVM-PDK?

The ADS8028EVM-PDK exposes the ADS8028's on-die temperature sensor (0.25°C resolution) via ADCPro's Controls tab. Pressing "Read Temp" triggers an internal conversion, returning raw output code and calibrated Celsius value. Temperature averaging (8-sample) can be enabled to reduce noise, and the sensor operates independently of analog input acquisition - allowing concurrent thermal monitoring and data sampling.

What are the supported voltage reference configurations on the ADS8028EVM-PDK?

The ADS8028EVM-PDK supports three reference modes: (1) ADS8028 internal 2.5-V reference (default at power-up), (2) onboard REF5025 2.5-V precision reference (selected by shorting J-REF pins 1–2), or (3) user-supplied external reference (1 V to 5 V) applied to J-ANALOG.20 (J-REF pins 2–3). Switching to external reference requires disabling the internal reference via SPI write to bit 2 of the control register before applying external voltage.