ADS1219IRTET

Overview

The ADS1219IRTET is a 24-bit, low-power analog-to-digital converter (ADC) from Texas Instruments, utilizing sigma-delta architecture. It features four input channels with differential or single-ended configurations and supports I2C digital interfaces. The device operates on supply voltages ranging from 2.3 V to 5.5 V for both analog and digital domains. It offers a sampling rate of 1 kS/s and includes an internal reference voltage of 2.048 V. Packaged in a 16-WQFN (3x3 mm) format, it functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a programmable gain amplifier (PGA) for flexible signal conditioning
• Includes built-in 50/60 Hz rejection filters for noise suppression
• Features an internal oscillator and reference voltage source

Applications

• Industrial process control systems
• Smart sensor nodes
• Precision measurement instruments
• Battery-powered portable devices

Procurement Notes

Verify the specific suffix 'IRTET' corresponds to the WQFN-16 package and reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to assembly planning. Ensure the ordering part number matches the exact pinout and thermal pad requirements specified in the official datasheet to avoid compatibility issues during PCB layout.

Selection Notes

Select this component when high resolution and multi-channel capability are required in a compact footprint. The integrated PGA reduces external component count compared to discrete solutions. Consider the 1 kS/s data rate against application latency needs. Verify that the I2C interface speed meets system bus requirements and that the operating voltage range aligns with the target power supply design.

Part Context

This part belongs to the ADS1219 family of precision ADCs designed for general-purpose applications. It shares core architectural similarities with other members like the ADS1219IPWR but differs in packaging and terminal availability. The IRTET variant specifically denotes the surface-mount WQFN package suitable for automated pick-and-place manufacturing processes.

Replacement Considerations

The ADS1219IPWR serves as a functional alternative offering identical electrical specifications in a TSSOP-16 package. Designers must account for significant mechanical differences including pin pitch, footprint dimensions, and thermal dissipation characteristics when substituting between these package types.