Texas Instruments ADS8638EVM-PDK

Overview

ADS8638EVM-PDK from Texas Instruments is a complete plug-in evaluation kit comprising the ADS8638EVM evaluation module, MMB0 motherboard, and ADCPro™ software for Windows XP. It enables full functional and performance evaluation of the 12-bit, 8-channel, 1-MHz SAR ADC ADS8638-including configurable input ranges (±2.5 V to ±10 V), per-channel alarms with hysteresis, and SPI interface-within a lab or design validation environment.

For engineers reviewing the ADS8638EVM-PDK datasheet, ADS8638EVM-PDK setup, ADS8638EVM-PDK USB driver installation, or ADS8638EVM-PDK alternative evaluation kits, this page provides verified hardware configuration details, jumper settings, power supply requirements (±15 V HV, +5 V AVDD, +1.8 V/+3.3 V DVDD), ADCPro plug-in operation, and MMB0 integration guidance.

Technical Context

The ADS8638EVM-PDK integrates the ADS8638EVM-a modular, TI-spec-compliant evaluation board-with the MMB0 motherboard based on the TMS320VC5507 DSP and USB interface. It supports analog input via J1 (10-pin dual-row header), digital control via J2 (SPI signals CS/SCLK/SDI/SDO plus I²C EEPROM interface), and multi-rail power delivery through J3 (±VA, +5VA, +1.8VD/+3.3VD).

ADCPro software provides real-time scope, FFT, and histogram analysis, full register-level control over ADS8638 configuration (input range, channel enable, alarm thresholds, hysteresis), and firmware-driven acquisition sequencing. The kit requires NI-VISA and USBStyx drivers and operates exclusively on Windows XP per documented release.

Key Specifications

Availability

ADS8638EVM-PDK is available at Aetrix Electronics and suitable for industrial sensor signal chain validation, precision data acquisition system prototyping, and embedded ADC firmware development requiring stable component supply, traceable sourcing, and long-term evaluation kit continuity.

Supply support for ADS8638EVM-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 solutions for industrial, automotive, and communications markets.

The ADS8638EVM-PDK belongs to TI's Modular EVM System family, designed specifically to accelerate evaluation and firmware development for precision SAR ADCs like the ADS8638 across diverse input voltage ranges and alarm-driven applications.

FAQ

What is the ADS8638EVM-PDK and how does it differ from the standalone ADS8638EVM?

The ADS8638EVM-PDK is a complete evaluation kit that includes the ADS8638EVM evaluation board, the MMB0 motherboard, and ADCPro software with the ADS86xxEVM-PDK plug-in. Unlike the standalone ADS8638EVM-which requires external digital interface hardware-the ADS8638EVM-PDK provides out-of-the-box USB connectivity and full GUI-based control. The PDK enables immediate evaluation without custom firmware or host interface development, while the bare EVM is intended for integration into existing test systems or custom controller platforms.

Which ADC devices does the ADS8638EVM-PDK support beyond the ADS8638?

The ADS8638EVM-PDK supports the ADS8614, ADS8618, and ADS8634 in addition to the ADS8638, as confirmed in the user's guide. All are members of the ADS86xx SAR ADC family sharing pin-compatible footprints and similar SPI register maps. The EVM's hardware layout and ADCPro plug-in accommodate these variants via device selection in the Device Config tab, enabling comparative evaluation of 8- vs. 12-bit resolution and 4- vs. 8-channel configurations using identical hardware and software infrastructure.

What power supplies are required to operate the ADS8638EVM-PDK?

The ADS8638EVM-PDK requires three distinct power domains: ±10 V to ±15 V high-voltage analog supplies (HVDD/HVEE), +5 V for analog circuitry (AVDD), and either +1.8 V or +3.3 V for digital core (DVDD)-selected via JP3 jumpers. The MMB0 motherboard draws +5 V and +3.3 V from its own regulators when powered via USB or terminal block J14. Laboratory power must be applied to J3 on the ADS8638EVM and J14 on the MMB0, with proper jumpering (e.g., J13B shorted for shared +5 VA) to avoid supply conflicts.

How do I configure the input voltage range and alarms on the ADS8638EVM-PDK?

Input voltage range (±2.5 V, ±5 V, ±10 V, +5 V, or +10 V) and per-channel alarm thresholds/hysteresis are configured entirely within the ADCPro software under the Device Config and Channels tabs. Range selection applies globally to all enabled channels; each channel's high/low alarm limits and hysteresis values are set individually. Alarm activation triggers the onboard LED and populates sticky status registers, readable via the GPIO & Alarms tab's "Read Alarms" function. All settings write directly to ADS8638 registers in real time.

Is the ADS8638EVM-PDK compatible with modern Windows operating systems?

No-the ADS8638EVM-PDK is officially supported only on Windows XP, as stated in the SBAU192A user's guide. While later versions of ADCPro expanded OS compatibility, the ADS86xxEVM-PDK plug-in v1.2.3 and associated USBStyx/NI-VISA drivers were validated exclusively for Windows XP. Attempts to run on Windows 7/10/11 typically fail due to unsigned driver blocks, deprecated API calls, and MMB0 firmware handshake incompatibilities. TI discontinued active development and OS updates for this specific PDK after the Windows XP lifecycle ended.