AD7714YRZ-REEL

Overview

The AD7714YRZ-REEL is a 24-bit sigma-delta analog-to-digital converter (ADC) from Analog Devices Inc., designed for low-frequency signal conditioning. It features a five-channel programmable gain front end with gains ranging from 1 to 128, supporting three fully differential or five pseudo-differential inputs. The device operates on a single supply of +2.7 V to +3.3 V or +4.75 V to +5.25 V and includes an on-chip digital filter with programmable cutoff frequencies. It utilizes a three-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards. The Y grade variant offers improved linearity of 0.001% and operates within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a charge balancing ADC with a proprietary programmable gain front end based on an analog modulator.
• Features an on-chip digital filter with the first notch programmable via control registers to adjust cutoff and settling time.
• Supports self-calibration, system calibration, and background calibration modes with read/write access to calibration coefficients.
• Includes Schmitt triggers on SCLK and DIN inputs for noise immunity in noisy environments.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure the voltage grade matches the application requirements, as the Y version supports both 3V and 5V operation ranges. Confirm that the component meets RoHS compliance standards required for the target assembly process.

Selection Notes

Select this component when high precision and low power consumption are critical for multi-channel sensor interfaces. The integrated PGA reduces external signal conditioning requirements. Consider the Y grade for applications requiring extended temperature ranges and enhanced linearity compared to standard versions. Verify compatibility with the host microcontroller's serial interface protocols.

Part Context

This part belongs to the AD7714 family of complete analog front ends for low-frequency measurement applications. The AD7714 series provides signal conditioning and conversion for systems consisting of up to five channels. The Y grade specifically enhances performance with wider temperature tolerance and lower power dissipation while maintaining the core 24-bit resolution architecture.

Replacement Considerations

The AD7714YRUZ is a verified equivalent part number offering identical electrical characteristics and functionality. Both parts share the same pinout and register map, allowing for direct substitution in existing designs without hardware modifications.