Texas Instruments ADS8325EVM-PDK

Overview

ADS8325EVM-PDK from Texas Instruments is a complete evaluation kit for the ADS8325 - a 16-bit, 100-kSPS, serial-output SAR analog-to-digital converter in an MSOP-8 package. It includes the MSOP-8EVM evaluation board, MMB0 DSP-based motherboard, USB interface, onboard 2.5V reference and buffer (U2/U4), configurable digital I/O voltage (1.8V–5V via JMP3), and ADCPro™ software for data acquisition and analysis.

For engineers reviewing the ADS8325EVM-PDK datasheet, ADS8325EVM-PDK pinout, ADS8325EVM-PDK application, or ADS8325EVM-PDK equivalent, this kit enables rapid functional validation, dynamic performance testing (SNR, THD, SFDR), reference source comparison (onboard vs. external), and interface timing characterization with DSP/microcontroller host systems using SCLK/FS/CS protocols.

Technical Context

The ADS8325EVM-PDK implements a modular two-board architecture: the MSOP-8EVM hosts the ADS8325 ADC and provides analog input (J1), digital control (J2), and power configuration (J3), while the MMB0 motherboard - based on the TMS320VC5507 DSP - handles USB communication, firmware execution, and clock generation. The system supports three SCLK modes: Continuous Clock (fixed max SCLK), Clockstop (24-cycle bursts), and Continuous Stretched (SCLK scaled to sample rate).

Digital I/O voltage is user-selectable (1.8V/2.5V/3.3V/5V) via JMP3 to match host controller logic levels; analog/digital grounds are tied via JMP4; reference selection (2.5V internal or external via J1.20) is controlled by JMP5/JMP6; and chip select can be sourced from FS (DSP) or CS (microcontroller) via JMP2 - enabling flexible integration across signal chain test environments.

Key Specifications

Availability

ADS8325EVM-PDK is available at Aetrix Electronics and suitable for high-precision sensor signal conditioning, industrial process monitoring, portable instrumentation, and data acquisition system development requiring stable component supply and full evaluation infrastructure.

Supply support for ADS8325EVM-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, with leadership in data converters, power management, and signal chain technologies.

The ADS8325EVM-PDK belongs to TI's precision data converter evaluation platform family, designed specifically to accelerate validation of high-resolution SAR ADCs in industrial, test & measurement, and medical applications where accuracy, low noise, and interface flexibility are critical.

FAQ

What is the ADS8325EVM-PDK used for?

The ADS8325EVM-PDK is a complete evaluation kit for the ADS8325 16-bit, 100-kSPS SAR ADC. It enables engineers to characterize dynamic performance (SNR, THD, SFDR), validate timing behavior under different SCLK modes, compare reference sources, and verify interface compatibility with DSP or microcontroller hosts - all using the included MMB0 motherboard and ADCPro™ software.

Does the ADS8325EVM-PDK support external reference inputs?

Yes, the ADS8325EVM-PDK supports external reference inputs via J1.20 (REF(+)). Jumpers JMP5 and JMP6 allow selection between the onboard 2.5V reference (U2/U4) and an external source. When JMP5 is set to pins 2–3 and JMP6 to pins 2–3, the external voltage applied to J1.20 is routed directly to the ADS8325 reference input, enabling accuracy testing with user-defined references.

Which host controllers are compatible with the ADS8325EVM-PDK?

The ADS8325EVM-PDK supports both DSP and microcontroller host interfaces via its J2 digital header (CS, SCLK, FS, SDO). The MMB0 motherboard uses the TMS320VC5507 DSP for USB communication, but the MSOP-8EVM board itself is designed for direct connection to external controllers - including MSP430 (via 1.8V–3.3V I/O buffers U3/U5/U6) - using configurable jumpers for CS/FS selection and digital supply voltage.

What software is required to operate the ADS8325EVM-PDK?

The ADS8325EVM-PDK requires ADCPro™ software (v1.x), which runs exclusively on Windows XP. It includes a dedicated ADS8325EVM-PDK plug-in that provides real-time control of sample rate, reference selection, and clock mode (Continuous, Clockstop, or Stretched SCLK). Firmware is auto-downloaded to the MMB0 during first USB connection, and driver installation completes via Windows Found New Hardware Wizard.

Can the ADS8325EVM-PDK evaluate other ADCs besides the ADS8325?

Yes - the ADS8325EVM-PDK is part of the modular MSOP-8EVM platform, which supports multiple 14- to 16-bit, single-channel, serial-output ADCs in MSOP-8 packages, including ADS8320, ADS8321, ADS8324, ADS8326, and others listed in TI's SBAU140A User's Guide. The same hardware and ADCPro plug-in framework apply; only the device-specific plug-in and jumper settings change per ADC.