Texas Instruments ADS1148V2EVM-PDK

Overview

ADS1148V2EVM-PDK from Texas Instruments is a fully assembled evaluation module designed to accelerate development with the 16-bit ADS1148 delta-sigma ADC. It supports thermocouple, RTD, and thermistor sensor interfaces via screw-terminal blocks J5 and J6, features dual voltage reference options (2.048 V internal REFOUT and 2.5 V REF5025), configurable AVDD (3.3 V or 5 V), and SPI communication through a USB-connected PAMBoard host interface.

For engineers reviewing the ADS1148V2EVM-PDK datasheet, ADS1148V2EVM-PDK pinout, ADS1148V2EVM-PDK application, or ADS1148V2EVM-PDK equivalent, this EVM provides hardware-ready signal conditioning, real-time GUI-based data capture, register-level configuration, and verified analog input topologies for precision temperature measurement systems.

Technical Context

The ADS1148V2EVM-PDK implements a plug-in evaluation platform that mates with the PAMBoard - a USB-to-SPI bridge providing 3.3-V logic-level digital interface, regulated AVDD/DVDD supplies, and GUI command translation. It routes all ADS1148 pins to accessible headers (J1–J4) and terminal blocks (J5/J6), enabling both PAMBoard-assisted operation and direct MCU integration.

Onboard design supports four reference modes: internal 2.048-V REFOUT, external 2.5-V REF5025, ratiometric RTD reference via R11, and user-supplied differential reference on J6. Clock selection is implemented via JP2 shunt for internal 4.096-MHz oscillator or external CLK input at J4-40.

Key Specifications

Availability

ADS1148V2EVM-PDK is available at Aetrix Electronics and suitable for industrial temperature sensing, sensor calibration labs, and embedded ADC prototyping requiring stable component supply, traceable sourcing, and long-term evaluation platform availability.

Supply support for ADS1148V2EVM-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, power management, and industrial interface solutions.

The ADS1148V2EVM-PDK belongs to TI's precision ADC evaluation platform family, engineered specifically to simplify validation of high-resolution delta-sigma converters in temperature-sensing applications using RTDs, thermocouples, and thermistors.

FAQ

What is the primary function of the ADS1148V2EVM-PDK?

The ADS1148V2EVM-PDK is an evaluation module designed to demonstrate and accelerate development with the ADS1148 16-bit delta-sigma ADC. It provides complete hardware support-including terminal blocks for thermocouple, RTD, and thermistor connections, multiple reference options, configurable power, and SPI interface-alongside a web-based GUI for real-time configuration and data analysis. The ADS1148V2EVM-PDK requires the PAMBoard for USB connectivity but can also interface directly with an external MCU via its pin headers.

Does the ADS1148V2EVM-PDK support both ADS1148 and ADS1248 devices?

No - the ADS1148V2EVM-PDK is specifically configured for the ADS1148 16-bit ADC variant. While it shares the same EVM platform family as the ADS1248EVM-PDK, the ADS1148V2EVM-PDK is calibrated and documented for ADS1148 operation, including register mapping, GUI firmware, and default settings aligned to the ADS1148 datasheet (SBAS453). Hardware compatibility does not imply functional interchangeability without verification of timing, gain, and noise performance differences.

How is the ADS1148V2EVM-PDK powered and what supply voltages does it use?

The ADS1148V2EVM-PDK receives power from the PAMBoard, which derives clean 3.3-V and 5-V supplies from the host PC's USB port. AVDD for the ADS1148 is selected via jumper JP1: left position = 5 V, right position = 3.3 V. DVDD is fixed at 3.3 V and supplied by the PAMBoard. LEDs D1 (ADS1148V2EVM-PDK ready) and D5 (5-V active) provide visual power status confirmation on the PAMBoard.

Can the ADS1148V2EVM-PDK operate without the PAMBoard?

Yes - the ADS1148V2EVM-PDK exposes all critical ADS1148 signals (SPI, RESET, DRDY, GPIO) on headers J1–J4 per Table 3-2 of the User's Guide, allowing direct connection to an external microcontroller or host system. In standalone mode, the user must provide appropriate logic-level power, clock (internal or external), and SPI control. The PAMBoard is required only for USB-based GUI operation and preconfigured power regulation.

What sensor types are supported out-of-the-box by the ADS1148V2EVM-PDK?

The ADS1148V2EVM-PDK natively supports thermocouples (via J5 TC± with biasing options), 2-/3-/4-wire RTDs (via J6 RTD_A/B/C with ratiometric reference configuration), and NTC thermistors (via J5 NTC± with CJC provisions). Each topology includes documented jumper settings, resistor placements (e.g., R11 for RTD reference), and GUI-configurable ADC registers - all validated in the ADS1148V2EVM-PDK User's Guide for immediate sensor evaluation without custom PCB design.