Texas Instruments ADS1262EVM-PDK

Overview

ADS1262EVM-PDK from Texas Instruments is an evaluation module for the ADS1262 32-bit precision delta-sigma ADC, featuring integrated PGA, 2.5-V reference, dual excitation current sources, and 11 analog inputs. It supports data rates up to 38.4 kSPS, delivers 7 nV_RMS noise at 2.5 SPS (gain = 32), and enables high-accuracy sensor measurements in weigh scales, RTD-based temperature systems, and strain-gauge interfaces.

For engineers reviewing the ADS1262EVM-PDK datasheet, ADS1262EVM-PDK pinout, ADS1262EVM-PDK application, or ADS1262EVM-PDK equivalent, this module provides verified hardware reference design, SPI interface validation, real-time noise performance characterization, and factory-calibrated test signal generation - all aligned with ADS1262 production device behavior and TI's SBAS661C specification.

Technical Context

The ADS1262EVM-PDK implements a complete signal chain around the ADS1262 IC, including configurable analog front-end routing, programmable gain amplifier (gains 1–32), internal 2.5-V reference with 2 ppm/°C drift, and dual 50–3000 µA sensor excitation sources. Its layout incorporates low-noise power conditioning, crystal oscillator support (7.3728 MHz), and GPIO-accessible fault monitoring signals.

It supports single-cycle settled conversions, 50/60-Hz line rejection ≥130 dB, and simultaneous use of primary ADC (32-bit) and auxiliary diagnostics - enabling rapid prototyping of high-stability measurement systems for industrial automation and laboratory instrumentation without custom PCB development.

Key Specifications

Availability

ADS1262EVM-PDK is available at Aetrix Electronics and suitable for factory automation, precision weighing, and sensor calibration applications requiring stable component supply, validated reference designs, and traceable evaluation hardware.

Supply support for ADS1262EVM-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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision data acquisition and industrial signal chain solutions.

The ADS126x product line was designed specifically for high-accuracy, low-drift sensor measurement systems - targeting weigh scales, temperature controllers, process analytics, and strain-gauge applications where offset drift ≤1 nV/°C and gain drift ≤0.5 ppm/°C are critical.

FAQ

What is the ADS1262EVM-PDK used for?

The ADS1262EVM-PDK is a Texas Instruments evaluation module that demonstrates and validates the performance of the ADS1262 32-bit precision ADC. It provides ready-to-use hardware for evaluating key features including programmable gain amplification, internal 2.5-V reference, dual sensor excitation current sources, and 50/60-Hz rejection - enabling rapid development of high-accuracy measurement systems without custom board design. The ADS1262EVM-PDK includes firmware examples, GUI software, and documentation aligned with the ADS1262 production device.

Does the ADS1262EVM-PDK support both ADS1262 and ADS1263 devices?

No - the ADS1262EVM-PDK is specifically configured for the ADS1262, which lacks the auxiliary 24-bit ADC present in the ADS1263. While the board shares the same TSSOP-28 footprint and core analog architecture, it does not provide access to or support for the ADS1263's second ADC channel or its extended gain range (up to 128). Users requiring ADS1263 evaluation should use the ADS1263EVM-PDK instead. The ADS1262EVM-PDK's schematics, layout, and firmware are optimized for ADS1262 functionality only.

What power supplies does the ADS1262EVM-PDK require?

The ADS1262EVM-PDK operates from a single 5-V USB supply or external 5-V DC input, internally generating regulated AVDD (5 V), AVSS (0 V), DVDD (3.3 V), and bias voltages. It includes dedicated low-noise LDOs and decoupling networks per TI's SBAS661C recommendations. The board does not support split analog supplies (e.g., ±2.5 V); AVSS is grounded. Power sequencing follows ADS1262 requirements: AVDD must be stable before DVDD, and the internal reference is enabled via register control - all managed automatically by the onboard firmware during ADS1262EVM-PDK initialization.

Can the ADS1262EVM-PDK measure thermocouples or RTDs directly?

Yes - the ADS1262EVM-PDK supports direct RTD measurement using its dual programmable current sources (50–3000 µA) and 11 analog inputs, enabling 2-, 3-, or 4-wire configurations with built-in lead resistance compensation. For thermocouples, it provides cold-junction compensation via its integrated temperature sensor (122.4 mV at 25°C, 420 µV/°C coefficient) and supports external thermocouple signal conditioning through the PGA (gains 1–32). All required biasing, filtering, and linearization are implemented in firmware, and example code for both RTD and thermocouple use cases is included with the ADS1262EVM-PDK software package.

Is the ADS1262EVM-PDK compatible with TI's Precision Dashboard software?

Yes - the ADS1262EVM-PDK is fully supported by Texas Instruments' Precision Dashboard GUI, which provides real-time configuration of ADS1262 registers, live waveform plotting, FFT analysis, noise histogram generation, and automated line-frequency rejection testing. The dashboard communicates via USB-to-SPI bridge on the ADS1262EVM-PDK and loads pre-validated profiles for common sensor types (e.g., Pt100, Type-K thermocouple). Firmware updates and configuration scripts for the ADS1262EVM-PDK are distributed through TI's official product folder and are synchronized with SBAS661C revision C (May 2021).