ADS1261BIRHBT

Overview

The ADS1261BIRHBT is a 24-bit, 10-channel delta-sigma analog-to-digital converter (ADC) manufactured by Texas Instruments. It features an integrated multiplexer, programmable gain amplifier (PGA), and excitation current sources within a single chip. The device supports a maximum sampling rate of 40 kSPS and accepts both differential and single-ended inputs. It operates with an analog supply voltage range of 4.75 V to 5.25 V and a digital supply voltage range of 2.7 V to 5.25 V. The component utilizes an SPI interface for data communication and is housed in a 32-VQFN package measuring 5x5 mm. It is rated for an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrated signal chain combining a 24-bit ADC, multiplexer, and programmable gain amplifier for simplified system design.
• Built-in excitation current sources suitable for direct sensor interfacing without external components.
• High-resolution 24-bit conversion capability with support for multiple input configurations including differential and single-ended modes.

Applications

• Industrial process control systems requiring high-precision multi-channel data acquisition.
• Weighing scales and load cell measurement applications utilizing internal excitation sources.
• Portable instrumentation devices benefiting from low power consumption and compact packaging.

Procurement Notes

Verify the specific suffix 'BT' corresponds to the tape-and-reel packaging format when ordering. Confirm that the B-grade specification meets the required gain error and offset drift parameters for the target application. Ensure compatibility with the 32-VQFN thermal pad requirements during PCB layout and assembly processes.

Selection Notes

Select this component when a high channel count is required alongside precision measurement capabilities. Compare against the ADS1260 if only five channels are sufficient, as it offers similar performance with fewer inputs. Consider the ADS1261IRHBT if industrial grade temperature ranges are not strictly necessary or if different packaging options are preferred.

Part Context

This part belongs to the ADS126x family of precision analog-to-digital converters designed for demanding measurement applications. The series integrates multiple functions typically found in discrete designs, reducing board space and component count. The ADS1261 variant specifically provides ten input channels, distinguishing it from lower-channel counterparts like the ADS1260.

Replacement Considerations

• ADS1261BIRHBR
• ADS1261IRHBT