Texas Instruments ADS1263V2EVM-PDK

Overview

ADS1263V2EVM-PDK from Texas Instruments is an evaluation platform for the ADS1263, a 32-bit, 38-kSPS, 10-channel multiplexed delta-sigma ADC with integrated PGA, 2.5-V low-drift reference, dual programmable IDACs (50–3000 µA), and auxiliary 24-bit ΔΣ ADC-designed for precision sensor measurement in weigh scales, RTD/thermocouple systems, and strain gauge interfaces.

For engineers reviewing the ADS1263V2EVM-PDK datasheet, ADS1263V2EVM-PDK pinout, ADS1263V2EVM-PDK application, or ADS1263V2EVM-PDK equivalent, this module enables rapid validation of high-resolution analog front-end performance, USB-based data capture, ratiometric RTD/thermistor biasing, cold-junction compensation, and multi-sensor signal chain diagnostics using LabVIEW-based GUI tools.

Technical Context

The ADS1263V2EVM-PDK integrates the ADS1263 IC with a Precision Host Interface (PHI) controller board that provides USB 2.0 communication, digital I/O signaling, and power delivery to the EVM. It supports configurable analog input topologies-including differential, single-ended, and mixed-mode-with hardware-level filtering (50 kHz differential, ~497 kHz common-mode) on all 11 analog inputs (AIN0–AIN9 + AINCOM).

On-board circuitry includes ultra-low-noise TPS7A4700 LDO for 5-V AVDD, PHI-supplied 3.3-V DVDD, optional external clock/reference footprints, and terminal blocks (J3–J6) for thermocouple, thermistor, and RTD connections-enabling direct sensor interface without external signal conditioning.

Key Specifications

Availability

ADS1263V2EVM-PDK is available at Aetrix Electronics and suitable for precision sensor evaluation, industrial calibration system development, and embedded metrology prototyping requiring stable component supply, traceable sourcing, and long-term design-in support.

Supply support for ADS1263V2EVM-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 data conversion technologies.

The ADS1263V2EVM-PDK belongs to TI's precision data acquisition evaluation platform family, engineered to accelerate validation of high-accuracy sensor interfaces for industrial process control, test & measurement, and scientific instrumentation.

FAQ

What is the primary function of the ADS1263V2EVM-PDK?

The ADS1263V2EVM-PDK is an evaluation module designed to demonstrate and validate the performance of the ADS1263 32-bit delta-sigma ADC. It provides complete hardware-including the ADS1263 IC, PHI controller board, USB interface, analog input terminals (J3–J6), and supporting power regulation-to enable rapid testing of precision sensor signal chains such as RTDs, thermocouples, strain gauges, and thermistors. The ADS1263V2EVM-PDK includes software for real-time data capture, spectral analysis, and histogram visualization.

Does the ADS1263V2EVM-PDK support both the ADS1263 and ADS1262 ICs?

Yes-the ADS1263V2EVM-PDK hardware is compatible with both the ADS1263 and ADS1262, as they share identical pinout and core functionality. However, the ADS1262 lacks the auxiliary 24-bit ADC present in the ADS1263. To use the ADS1262, users must manually replace the ADS1263 IC on the board per Section 8.3 of the user's guide. The ADS1263V2EVM-PDK software and default configuration are optimized for the ADS1263, including its full feature set.

How does the ADS1263V2EVM-PDK handle thermocouple cold-junction compensation (CJC)?

The ADS1263V2EVM-PDK supports CJC using an unpopulated 10-kΩ NTC thermistor (RT1) mounted near the J4 thermocouple terminals. PCB copper pours create an isothermal bridge between J4:1/J4:2 and RT1 to ensure matched temperature sensing. Users populate RT1, R34 (bias resistor), and R36 (REFOUT jumper) to measure the cold-junction voltage via AIN6/AIN7. Because the ADS1263 is multiplexed, CJC and thermocouple readings must be acquired sequentially and combined in software-functionality supported by the ADS1263V2EVM-PDK GUI and documented in TI's thermocouple application notes.

Can the ADS1263V2EVM-PDK evaluate 4-wire RTD measurements without external jumpers?

Yes-the ADS1263V2EVM-PDK supports 4-wire RTD connections natively on terminal block J3 without external jumpers. For example, connecting the sense leads to AIN6/AIN7 and the force leads to AIN4 and AINCOM allows the ADS1263's dual IDACs to drive the RTD while measuring voltage across it ratiometrically against the reference resistor (R1). This eliminates lead resistance errors and leverages the ADS1263V2EVM-PDK's built-in filtering, PGA gain, and 2.5-V reference for high-accuracy resistance-to-temperature conversion.

What power requirements does the ADS1263V2EVM-PDK have?

The ADS1263V2EVM-PDK is USB-powered via the PHI controller board and requires no external power supply. The PHI delivers 3.3-V DVDD to the ADS1263 digital domain, while the on-board TPS7A4700 LDO generates ultra-low-noise 5-V AVDD for the analog section. External AVDD can be supplied if higher noise immunity or custom rail levels are needed. All power domains include dedicated 1-µF decoupling capacitors placed adjacent to the ADS1263 pins per the layout guidelines in the ADS1263V2EVM-PDK user's guide.