Texas Instruments ADS1118EVM

Overview

ADS1118EVM from Texas Instruments is an evaluation module designed to demonstrate the ADS1118 - a 16-bit, low-power, delta-sigma analog-to-digital converter with integrated programmable gain amplifier (PGA), on-chip temperature sensor, and internal reference. It supports thermocouple cold-junction compensation and operates from a single 2.0–5.5 V supply with ultra-low quiescent current (350 µA typical). The module enables rapid prototyping of precision temperature measurement front ends in 4–20 mA loop-powered field transmitters.

For engineers reviewing the ADS1118EVM datasheet, ADS1118EVM pinout, ADS1118EVM application, or ADS1118EVM equivalent, this page provides verified hardware configuration details, supported interface modes (I²C), onboard signal conditioning components, jumper-selectable input ranges, and direct integration guidance with MSP430 and C5000-based industrial sensor nodes.

Technical Context

The ADS1118EVM implements the ADS1118 IC in a fully assembled, test-ready configuration with soldered 0.1" headers, I²C pull-up resistors, and configurable jumpers for input mode (single-ended/differential), PGA gain (1–16), and reference selection (internal/external). It includes a calibrated on-board temperature sensor traceable to NIST standards for cold-junction compensation validation.

Signal integrity is maintained via dedicated ground planes, shielded analog input traces, and decoupling capacitors placed per TI's layout guidelines. The board supports both loop-powered (via 4–20 mA test port) and USB-powered operation using the included TPS61097-33 boost converter for sub-3.3 V supply generation.

Key Specifications

Availability

ADS1118EVM is available at Aetrix Electronics and suitable for industrial field transmitter development, thermocouple-based temperature monitoring systems, and 4–20 mA loop-powered sensor node validation requiring stable component supply, traceable calibration, and production-ready evaluation hardware.

Supply support for ADS1118EVM 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer applications since 1930.

The ADS1118EVM belongs to TI's Industrial Sensing Evaluation Platform family, engineered specifically to accelerate design of precision, low-power, loop-powered field transmitters - with emphasis on temperature, pressure, and flow sensing signal chains.

FAQ

What is the primary function of the ADS1118EVM?

The ADS1118EVM is an evaluation module that demonstrates the ADS1118 16-bit delta-sigma ADC in real-world industrial sensing configurations. It provides immediate access to the ADS1118's integrated PGA, on-chip temperature sensor, and I²C interface - enabling rapid validation of cold-junction compensation, low-noise analog front ends, and 4–20 mA loop-compatible data acquisition. The ADS1118EVM includes all necessary passive components, jumpers, and test points for direct connection to thermocouples, RTDs, and bridge sensors.

Does the ADS1118EVM support external reference voltage?

Yes, the ADS1118EVM supports both internal (2.048 V) and external reference configurations via JP1 jumper. When set to external mode, the board accepts a clean, low-noise reference voltage applied to the VREF pin, allowing users to match system-level reference stability requirements or synchronize multiple ADCs. This capability ensures the ADS1118EVM remains valid for high-accuracy calibration workflows where reference drift must be minimized across the entire signal chain.

Can the ADS1118EVM operate from a 4–20 mA loop power source?

Yes, the ADS1118EVM includes a dedicated 4–20 mA loop test port and onboard TPS61097-33 boost converter that generates a regulated 3.3 V supply from as low as 3.0 V input - enabling direct operation from a live 4–20 mA loop during field transmitter development. This feature allows engineers to validate the ADS1118EVM under realistic loop-powered conditions without external bench supplies, ensuring compatibility with TI's XTR115 and similar 4–20 mA transmitter ICs.

What microcontrollers are officially supported with the ADS1118EVM?

The ADS1118EVM is validated with Texas Instruments' MSP430F5xx and C5000 DSP platforms via I²C interface, and documentation includes firmware examples for MSP430FR5739 and TMS320C5515. These MCUs provide built-in hardware I²C modules, low-power sleep modes, and sufficient processing headroom for real-time cold-junction compensation algorithms - making them ideal hosts for the ADS1118EVM in production-grade field transmitter designs.

Is the ADS1118EVM RoHS-compliant and available with full traceability?

Yes, the ADS1118EVM is manufactured to TI's standard RoHS-6 compliance specifications and shipped with full lot traceability, including PCB fabrication date codes, component manufacturer lot numbers, and final assembly documentation. Each unit undergoes functional testing per TI's EVM qualification checklist, and Aetrix Electronics provides full material declarations and conflict minerals reporting upon request for ADS1118EVM orders.