ADS1283IRHFR

Overview

The ADS1283IRHFR is a Texas Instruments ultra-high-resolution analog-to-digital converter featuring two differential channels and sigma-delta architecture. It supports sampling rates up to 4 kSPS with a resolution of 31 bits. The device integrates a programmable gain amplifier (PGA) and communicates via an SPI interface. It operates on a 5 V analog supply and a 1.8 V to 3.3 V digital supply, consuming 18 mW of power. Key performance metrics include a signal-to-noise ratio of 130 dB and an spurious-free dynamic range of 123 dB. It functions within a temperature range of -40°C to +85°C in a VQFN-24 package.

Feature Summary

• Integrates a programmable gain amplifier for flexible signal conditioning
• Provides high-resolution data conversion using sigma-delta modulation
• Supports differential input configurations for noise rejection

Applications

• Seismology and geophysics data acquisition systems
• Medical imaging equipment requiring high precision
• Industrial process control monitoring

Procurement Notes

Verify the specific suffix against official documentation to confirm pin compatibility and electrical characteristics. Ensure the component meets RoHS standards if required by the target assembly. Confirm moisture sensitivity levels and reflow soldering profiles prior to manufacturing integration.

Selection Notes

Select this model when dual-channel high-resolution conversion is necessary. Compare SNR and SFDR specifications against system noise floors. Verify that the SPI interface timing aligns with the host microcontroller capabilities. Check PGA gain settings against expected input signal amplitudes.

Part Context

This component belongs to the ADS1283 family of delta-sigma ADCs designed for high-performance applications. It shares architectural similarities with other devices in the series but offers specific channel counts and packaging options. The IRHFR designation indicates industrial temperature range and reel packaging.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility before replacing existing designs. Ensure equivalent resolution and sampling rate requirements are met by any substitute part.