Texas Instruments ADS1271EVM-PDK

Overview

ADS1271EVM-PDK from Texas Instruments is a complete evaluation platform for the ADS1271 24-bit delta-sigma analog-to-digital converter, integrating two ADS1271IPW devices in daisy-chain configuration, onboard ±15V buffer amplifiers (OPA1632), dual reference sources (2.5V REF1004I + REF3125), and a DSP-based MMB0 motherboard with USB interface and Windows evaluation software.

For engineers reviewing the ADS1271EVM-PDK datasheet, ADS1271EVM-PDK hardware setup, ADS1271EVM-PDK software operation, or ADS1271EVM-PDK compatibility with TI Modular EVM System, this PDK delivers turnkey signal chain validation for high-precision industrial measurement, audio test equipment, and sensor interface development requiring ≤105kSPS sampling and ≥110dB SNR.

Technical Context

The ADS1271EVM-PDK implements a dual-channel, 24-bit delta-sigma ADC evaluation system with configurable SPI/FSYNC communication modes, selectable clock sources (27MHz onboard oscillator or external EXTCLK), and flexible analog input routing through OPA1632 fully-differential unity-gain buffers or direct connection to J1/J4/J5 headers.

It supports three ADS1271 conversion modes-High-Speed (≤105kSPS), High-Resolution, and Low-Power-with automatic data rate limiting per mode, and provides full digital control via J2 header including MODE0/MODE1, FSDIR, CLKRMODE, CLKXMODE, and OBCLKSEL signals for system-level timing and interface simulation.

Key Specifications

Availability

ADS1271EVM-PDK is available at Aetrix Electronics and suitable for high-precision data acquisition, industrial sensor interface validation, and audio test equipment development requiring stable component supply and full evaluation ecosystem support.

Supply support for ADS1271EVM-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 and embedded processing technologies, with leadership in precision data converters and evaluation platforms.

The ADS1271EVM-PDK belongs to TI's precision ADC evaluation module product line, designed to accelerate prototyping and performance validation of high-resolution delta-sigma converters in demanding measurement applications.

FAQ

What is the ADS1271EVM-PDK and how does it differ from the standalone ADS1271EVM?

The ADS1271EVM-PDK is the complete evaluation kit comprising the ADS1271EVM board plus the DSP-based MMB0 motherboard, USB cable, AC adapter, and preconfigured Windows evaluation software. Unlike the standalone ADS1271EVM, the PDK enables immediate out-of-box operation with automated firmware download, real-time FFT/THD analysis, and CSV data recording - all managed through the dedicated ADS1271EVM-PDK software suite.

Which ADC device does the ADS1271EVM-PDK evaluate, and what are its key electrical specifications?

The ADS1271EVM-PDK evaluates the ADS1271IPW - a 24-bit, single-channel delta-sigma ADC in 16-TSSOP package. Confirmed specifications include 110dB SNR, 105kSPS maximum data rate in High-Speed mode, ±2.5V input range (with appropriate reference), and integrated digital filter with programmable decimation ratio. These values are validated by the ADS1271EVM-PDK's onboard circuitry and software analysis tools.

Does the ADS1271EVM-PDK support daisy-chaining, and how is it implemented?

Yes, the ADS1271EVM-PDK supports daisy-chaining via its dual ADS1271IPW devices (U7 and U8). The J2 header provides dedicated DIN/DOUT lines and shared FSOUT/FSR signals configured for synchronized frame control. The hardware design allows stacking up to four ADS1271EVM boards on one MMB0, enabling up to eight ADC channels in a single chain - verified in the ADS1271EVM-PDK User's Guide Section 5.3 and Figure 1.

What power supplies are required to operate the ADS1271EVM-PDK, and how are they distributed?

The ADS1271EVM-PDK requires three distinct power domains: +5VA (for ADS1271 analog section, supplied via J3.3), ±15V (for OPA1632 buffer amplifiers, supplied via J3.1/J3.2), and +3.3VD (for digital logic and MMB0 interface, supplied via J3.9). J6 jumpers configure DVDD selection between +1.8VD and +3.3VD; the factory default uses +3.3VD. All supplies must be within ADS1271 datasheet limits before power-on.

Is the ADS1271EVM-PDK compatible with modern Windows operating systems?

The official ADS1271EVM-PDK software is designed exclusively for Microsoft Windows XP, as documented in the SBAU107C User's Guide Section 2.2.4. It relies on NI-VISA 3.1 Runtime with USB driver dependencies not supported on Windows 10/11. While basic hardware functionality (e.g., SPI register access via custom host code) remains possible, the provided evaluation GUI and automated analysis features require Windows XP or virtualized legacy environment.