ADS1219IPWR

Overview

The ADS1219IPWR is a 24-bit, low-power analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes a delta-sigma architecture and features four input channels supporting both differential and single-ended configurations. The device operates on a supply voltage range of 2.3V to 5.5V for both analog and digital domains. It offers a maximum sampling rate of 1kSPS and communicates via an I2C interface. The component is housed in a 16-TSSOP package with a width of 4.40mm. It includes an internal reference and programmable gain amplifier (PGA). The operating temperature range extends from -40°C to +125°C.

Feature Summary

• Integrates a 24-bit delta-sigma modulator with a multiplexer for multi-channel signal acquisition.
• Supports flexible input configurations including differential and single-ended modes.
• Features an internal voltage reference and programmable gain amplifier to simplify system design.
• Provides industry-standard I2C serial interface for straightforward microcontroller integration.

Applications

• Industrial process control systems requiring high-resolution data acquisition.
• Smart sensor nodes and portable instrumentation devices.
• Precision measurement instruments utilizing bridge sensors or thermocouples.

Procurement Notes

Verify the specific suffix IPWR indicates the tape-and-reel packaging variant when ordering. Confirm that the required I2C address configuration aligns with the system design constraints. Ensure the power supply rails remain within the specified 2.3V to 5.5V range to maintain performance specifications. Check for any recent product change notices regarding marking or material composition updates before finalizing procurement plans.

Selection Notes

Select this component when a balance of high resolution and moderate speed is required for multi-channel applications. The integrated PGA reduces the need for external amplification in low-level signal scenarios. Consider the I2C interface limitations if higher data throughput or complex timing is necessary compared to SPI-based alternatives. Evaluate the thermal dissipation capabilities given the wide operating temperature range and surface-mount package type.

Part Context

The ADS1219 belongs to Texas Instruments' family of precision delta-sigma ADCs designed for general-purpose use. It shares architectural similarities with other ADS12xx series devices but distinguishes itself through its specific combination of channel count, I2C interface, and power consumption profile. This positioning makes it suitable for cost-sensitive applications where full SPI flexibility is not mandatory.

Replacement Considerations

The ADS1219IPWTR is the identical functional device packaged in tape-and-reel format instead of cut-tape. Designers may substitute between these suffixes based on assembly line handling requirements without altering circuit functionality. Other ADS1219 variants exist with different packages or interfaces, requiring schematic verification before replacement.