ADS1283BIRHFT

Overview

The ADS1283BIRHFT is a high-resolution, low-noise analog-to-digital converter (ADC) manufactured by Texas Instruments. It features two simultaneous sampling channels with integrated programmable gain amplifiers (PGAs). The device utilizes a delta-sigma architecture to achieve high precision data conversion at rates up to 4 kSPS. Key electrical specifications include a resolution of 24 bits and an input voltage range compatible with standard sensor outputs. It operates on a single 5V supply for analog circuits and supports digital interfaces typical for SPI communication. The component is housed in a compact VQFN package suitable for space-constrained applications.

Feature Summary

• Dual-channel simultaneous sampling capability for synchronized signal acquisition
• Integrated programmable gain amplifiers allowing flexible input scaling
• Delta-sigma modulation architecture providing high linearity and noise rejection
• On-chip digital filtering with selectable output data rates

Applications

• Seismic data acquisition systems
• Well logging equipment
• High-precision multi-channel measurement instruments

Procurement Notes

Verify the complete part number including suffixes such as TG4 or RGRT against official Texas Instruments documentation to ensure correct package type and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to ordering. Cross-reference the manufacturer's latest datasheet for any product change notifications that may affect pinout or electrical characteristics.

Selection Notes

Select this component when dual-channel high-resolution acquisition is required without external multiplexing. Ensure the system design accommodates the specific power supply requirements for analog and digital sections. Verify that the available clock frequency supports the desired maximum sampling rate of 4 kSPS. Consider thermal dissipation limits if operating near the upper temperature range specified in the datasheet.

Part Context

This device belongs to the ADS128x family of precision ADCs designed for demanding industrial and scientific applications. It shares architectural similarities with other members like the ADS1281 and ADS1282 but offers specific channel counts and performance trade-offs. The B-grade variant typically indicates tighter initial accuracy specifications compared to standard grades within the same series.

Replacement Considerations

Direct substitutes within the same family include the ADS1281 and ADS1282, depending on whether single or three-channel configurations are acceptable. Verify pin compatibility and register mapping before swapping. Alternative devices from other manufacturers require careful evaluation of interface timing and PGA characteristics.