ADS1283IRHFT

Overview

The ADS1283IRHFT is a high-resolution analog-to-digital converter (ADC) from Texas Instruments, featuring a dual-channel sigma-delta architecture. It delivers 31-bit resolution with a maximum sampling rate of 4 kSPS per channel. The device supports differential inputs and integrates a programmable gain amplifier (PGA). Electrical specifications include a signal-to-noise ratio (SNR) of 130 dB and an spurious-free dynamic range (SFDR) of 123 dB. Power consumption is rated at 18 mW for the ADC core and 33 mW total. It operates within a temperature range of -40°C to +85°C and utilizes a VQFN-24 package.

Feature Summary

• Integrates two independent delta-sigma modulators with digital filters for simultaneous multi-channel acquisition.
• Includes a built-in programmable gain amplifier to accommodate various sensor input levels without external components.
• Features a flexible serial peripheral interface (SPI) for communication and configuration control.

Applications

• Seismic data acquisition systems
• Well logging instrumentation
• High-precision industrial process monitoring

Procurement Notes

Verify the suffix 'IRHFT' corresponds to the specific temperature grade (-40°C to +85°C), reel packaging, and tape-and-reel quantity defined in the official datasheet. Confirm that the device meets RoHS compliance requirements as specified by the manufacturer for this particular part number variant.

Selection Notes

Select this component when dual-channel high-resolution conversion is required. Ensure the system design accommodates the 5V analog supply and 1.8V to 3.3V digital supply voltages. Verify that the SPI interface timing aligns with the host microcontroller capabilities and that the PGA gain settings suit the expected input signal amplitude.

Part Context

This part belongs to the ADS128x family of high-resolution ADCs designed for demanding measurement applications. It shares architectural similarities with the ADS1281 and ADS1282 but distinguishes itself through its dual-channel configuration, making it suitable for applications requiring synchronized multi-point data capture.

Replacement Considerations

The ADS1283AIRHFT is a verified alternative within the same series. Verify that any substitute maintains identical pinout compatibility, electrical performance limits, and package dimensions to ensure seamless integration into existing hardware designs.