ADS127L21BIRUKR

Overview

The ADS127L21BIRUKR is a single-channel, 24-bit delta-sigma analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a WQFN-20 package and operates within a digital supply voltage range of 1.65 V to 5.5 V. The device supports differential inputs and communicates via an SPI interface. Key electrical specifications include a signal-to-noise ratio (SNR) of 110 dB and a spurious-free dynamic range (SFDR) of 125 dB. It functions reliably across an operating temperature range from -40°C to +125°C with a typical power dissipation of 32.8 mW.

Feature Summary

• 24-bit resolution with 110 dB SNR and 125 dB SFDR
• Differential input type with buffered input architecture
• SPI digital interface for data and register communication
• Operates on digital supply voltages between 1.65 V and 5.5 V

Applications

• High-resolution data acquisition systems
• Industrial process control instrumentation
• Medical diagnostic equipment requiring high precision
• Structural health monitoring sensors

Procurement Notes

Verify the specific suffix 'B' against the official datasheet to confirm if it denotes a specific binning, temperature grade, or packaging variation distinct from the standard ADS127L21IRUKR. Confirm RoHS compliance status through the manufacturer's documentation before integration into regulated assemblies.

Selection Notes

Select this component when a single-channel, high-precision ADC is required in a compact WQFN-20 footprint. Ensure the system design accommodates the 1.65 V to 5.5 V digital supply range and that the SPI controller supports the necessary clock speeds. Verify that the 110 dB SNR meets the noise floor requirements of the target application.

Part Context

This part belongs to the ADS127L21 series of low-power, high-speed delta-sigma ADCs. It shares core architectural features with variants like the ADS127L21IRUKT, differing primarily in the 'B' suffix which may indicate specific manufacturing lot characteristics or regional distribution codes rather than functional changes.

Replacement Considerations

The ADS127L21IRUKR is a functionally equivalent alternative within the same family. Both share identical pinouts, electrical specifications, and package dimensions. Verify that the 'B' suffix does not impose unique handling constraints compared to the standard 'I' industrial grade variant.