ADS1226IRGVT

Overview

The ADS1226IRGVT is a 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes sigma-delta architecture and features two differential or single-ended inputs with an integrated multiplexer. The device supports data rates up to 100 samples per second and communicates via an SPI-compatible serial interface. It operates on a single supply voltage ranging from 2.7V to 5.5V for both analog and digital domains. The component is housed in a 16-pin VQFN package measuring 4x4 mm with an exposed pad, designed for surface-mount installation. It includes an internal temperature sensor and functions within a specified operating temperature range of -40°C to +105°C.

Feature Summary

• Integrates a programmable gain amplifier and a low-noise chopper-stabilized instrumentation amplifier for high-precision signal conditioning.
• Includes an on-chip temperature sensor for monitoring device thermal conditions without external components.
• Features a flexible input multiplexer supporting multiple differential or single-ended channel configurations.

Applications

• Industrial process control systems requiring high-resolution measurement.
• Portable battery-powered instrumentation due to low power consumption capabilities.
• Weight scales and load cell interfaces utilizing bridge sensors.
• Medical equipment demanding precise physiological signal acquisition.

Procurement Notes

Verify the specific ordering suffix to ensure the correct tape and reel quantity matches production requirements. Confirm that the IRGVT designation corresponds to the industrial temperature grade and VQFN package variant. Cross-reference the manufacturer part number with official datasheets to validate pinout compatibility and electrical specifications before integration into the bill of materials.

Selection Notes

Select this component when applications require 24-bit resolution with moderate speed up to 100 SPS. Ensure the system design accommodates the 2.7V to 5.5V supply voltage range. Verify that the SPI interface timing aligns with the host microcontroller capabilities. Consider the 16-VQFN package dimensions for PCB layout constraints and thermal dissipation needs during the design phase.

Part Context

This part belongs to the ADS122x family of precision ADCs from Texas Instruments. It shares architectural similarities with the ADS1222 and ADS1224 but offers two input channels compared to the single-channel variants. The device complements other data converters in the portfolio by providing a balance of high resolution and low power consumption for cost-sensitive embedded applications.

Replacement Considerations

The ADS1222IRGVT and ADS1224IRGVT are pin-compatible alternatives within the same family, offering one and four channels respectively. These substitutes maintain identical electrical characteristics and package dimensions, allowing for direct footprint reuse if channel count adjustments are required.