Texas Instruments ADS1256EVM-PDK

Overview

ADS1256EVM-PDK from Texas Instruments is an evaluation kit comprising the ADS1256EVM evaluation module, MMB0 motherboard, and ADCPro™ software for rapid characterization of the ADS1256 24-bit delta-sigma analog-to-digital converter. It supports configurable analog input multiplexing (AIN0–AIN7), programmable gain amplifier (PGA) up to 64×, and effective data rates from 2.5 SPS to 30 kSPS. The kit enables full functional and performance validation in precision measurement applications including weigh scales and industrial process monitoring.

For engineers reviewing the ADS1256EVM-PDK datasheet, ADS1256EVM-PDK pinout, ADS1256EVM-PDK application, or ADS1256EVM-PDK equivalent, this kit delivers turnkey USB-based evaluation with real-time FFT, histogram, and scope analysis - all without firmware development or hardware modification.

Technical Context

The ADS1256EVM-PDK integrates the ADS1256EVM board - a modular TI EVM compliant with the TI Modular EVM System specification - with the MMB0 DSP-based motherboard. The ADS1256EVM provides direct access to all ADS1256 pins via J1 (analog), J2 (serial), J3 (power), and J5 (GPIO) headers, while the MMB0 handles USB communication, power regulation, and host interface abstraction.

ADCPro™ software runs on Microsoft Windows and communicates with the ADS1256EVM-PDK via NI-VISA or USBStyx drivers. It implements plug-in control of PGA gain, data rate, reference selection (onboard REF5025 or external), clock source (7.68 MHz crystal or external), and multiplexer configuration - enabling complete register-level control without custom code.

Key Specifications

Availability

ADS1256EVM-PDK is available at Aetrix Electronics and suitable for precision sensor signal chain validation, high-resolution data acquisition system prototyping, and metrology-grade ADC qualification requiring stable component supply and full technical support.

Supply support for ADS1256EVM-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 power management technologies, with over 90 years of innovation in precision analog design.

The ADS1256EVM-PDK belongs to TI's Precision Data Acquisition Evaluation Kit product line, engineered to accelerate time-to-prototype for high-accuracy measurement systems using delta-sigma ADCs in industrial, test & measurement, and scientific instrumentation.

FAQ

What is included in the ADS1256EVM-PDK kit?

The ADS1256EVM-PDK includes the ADS1256EVM evaluation module PCB, MMB0 motherboard, USB cable, AC adapter, and licensed ADCPro™ software installation media. It does not include the ADS1256 IC itself - that is already soldered onto the ADS1256EVM board. All jumpers, switches, and reference components (REF5025, OPA350) are pre-installed and factory-configured for immediate use.

Does the ADS1256EVM-PDK require external programming or firmware development?

No. The ADS1256EVM-PDK operates out-of-the-box with ADCPro™ software on Windows PCs. The MMB0 handles low-level USB communication and register access; users configure the ADS1256 via intuitive GUI tabs (MUX, Clocks, GPIO, Power & Ref, Cal) without writing code, compiling firmware, or modifying hardware. All ADS1256 registers are accessible through the software interface.

Can the ADS1256EVM-PDK evaluate both the ADS1256 and ADS1255?

Yes. The ADS1256EVM-PDK is explicitly validated for both the ADS1256 and ADS1255. The ADS1255 is a functional subset of the ADS1256 (same core architecture, identical timing and register map) but packaged in a smaller QFN-20 and lacking AIN2–AIN7 inputs. All ADS1255 features - including 24-bit resolution, PGA, and same data rates - are fully supported and testable using the ADS1256EVM-PDK.

How is analog input configured on the ADS1256EVM-PDK?

Analog input routing on the ADS1256EVM-PDK is controlled by physical slide switches S1 and S2 (for AIN0–AIN3) and header J1 (for AIN4–AIN7). S1/S2 select between external signals (J1.1–J1.4), onboard 2.5 V reference, or shorted-zero configurations - enabling quick noise, offset, and gain testing. Input filtering capacitors (10 nF differential, 1 µF reference) are pre-soldered and user-replaceable for signal conditioning optimization.

What reference voltage options does the ADS1256EVM-PDK support?

The ADS1256EVM-PDK supports three reference modes via switch S3: (1) External reference applied to J1.18 (REF–) and J1.20 (REF+); (2) Onboard REF5025 in low common-mode mode (+2.5 V to AGND); or (3) Onboard REF5025 in high common-mode mode (AVDD to +2.5 V). The OBL position is recommended for standard ratiometric measurements, while OBH enables common-mode rejection validation.