AD7714AR-3REEL

Overview

The AD7714AR-3REEL is a complete analog front end for low-frequency measurement applications, featuring a charge balancing ADC with 24-bit resolution and no missing codes. It operates on a single +3 V supply (AVDD range: +3 V to +3.6 V) and includes a five-channel programmable gain front end with gains from 1 to 128. The device accepts differential or pseudo-differential inputs and utilizes a sigma-delta conversion technique. It features a three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP systems. The part is housed in a 24-lead SOIC package.

Feature Summary

• Integrates a five-channel programmable gain front end capable of accepting signals directly from transducers.
• Provides a three-wire serial interface that reduces interconnect lines and optocoupler requirements in isolated systems.
• Includes on-chip registers allowing software configuration of filter cutoff, input gain, channel selection, and calibration modes.
• Features self-calibration and system calibration options to eliminate endpoint errors and temperature drift effects.

Applications

• Portable industrial instruments
• Portable weigh scales
• Loop-powered systems
• Pressure transducers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the reel packaging format and voltage grade. Ensure the component matches the required 3 V supply specification and SOIC package dimensions before integration into the design.

Selection Notes

Select this model when a single +3 V supply operation is required for the analog section. Confirm compatibility with the target microcontroller's serial interface protocol. Evaluate the programmable gain settings against the expected sensor signal levels to ensure optimal dynamic range usage.

Part Context

This component belongs to the AD7714 family of high-performance analog front ends designed for precision data acquisition. The 'AR' designation indicates the SOIC package variant, while the '-3' suffix specifies the 3 V analog supply version. The 'REEL' suffix denotes tape-and-reel packaging for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.