ADS127L21IRUKT

Overview

The ADS127L21IRUKT is a 24-bit delta-sigma analog-to-digital converter (ADC) from Texas Instruments, housed in a 20-pin WQFN package measuring 3mm x 3mm. It features programmable digital filters supporting data rates up to 512kSPS with wideband filtering and up to 1.365MSPS with low-latency filtering. The device offers a typical dynamic range of 111.5dB at 200kSPS and total harmonic distortion of -125dB. It operates on analog supply voltages ranging from 2.85V to 5.5V and digital I/O supplies from 1.65V to 5.5V, functioning within an ambient temperature range of -40°C to +125°C.

Feature Summary

• Programmable FIR and IIR digital filters allow custom filter profiles such as A-weighting compensation and frequency notch filters.
• Power-scalable architecture provides four speed modes to optimize the balance between data rate, resolution, and power consumption.
• Low-drift modulator achieves excellent DC precision with low wideband noise for outstanding AC performance.
• SPI serial interface includes daisy-chain capability and cyclic-redundancy check validation for enhanced operational reliability.

Applications

• Test and measurement: Data acquisition systems
• Factory automation and control: Vibration monitoring and condition monitoring
• Medical equipment: Doppler ultrasound systems

Procurement Notes

Verify the specific suffix IRUKT corresponds to the tape-and-reel packaging configuration when ordering. Confirm that the required operating voltage levels for AVDD1, AVDD2, and IOVDD align with the system power rails before finalizing procurement. Ensure the design accommodates the thermal requirements associated with the 20-pin WQFN package under maximum load conditions.

Selection Notes

Select this component when high-resolution 24-bit conversion is required alongside flexible filtering options. Choose the wideband mode for applications prioritizing signal fidelity and the low-latency mode for time-critical data throughput. Evaluate the power scalability features to ensure the selected speed mode meets the thermal and energy constraints of the target enclosure.

Part Context

This part belongs to the ADS127L21 family of high-performance ADCs designed for space-constrained environments. The RUK suffix indicates the 20-lead WQFN package format. It serves as a high-speed alternative to lower-rate devices in the same series, offering superior data throughput capabilities while maintaining the compact footprint required for modern industrial and medical instrumentation designs.

Replacement Considerations

ADS127L21IRUKR