AD7714ARSZ-5

Overview

The AD7714ARSZ-5 is a 24-bit sigma-delta analog-to-digital converter (ADC) manufactured by Analog Devices Inc. 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 +5 V supply and includes an internal reference voltage of 2.5 V. It utilizes a three-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards. Key performance metrics include a maximum integral nonlinearity of -0.003% FSR, a typical gain drift of 0.5 ppm/°C, and a power dissipation of 7 mW at full operation. The component is housed in a 28-lead SSOP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a complete analog front end with a charge balancing ADC for low-frequency measurement applications.
• Features a proprietary programmable gain front end that accepts low-level signals directly from transducers.
• Includes an on-chip digital filter with a programmable first notch for adjusting cutoff frequency and settling time.
• Supports self-calibration, system calibration, and background calibration modes via software configuration.

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 temperature grade. Ensure the required supply voltage matches the -5 variant specifications. Confirm availability status through authorized distributors as lead times may vary based on production schedules.

Selection Notes

Select this model when a 24-bit resolution with a five-channel input multiplexer is required. The -5 suffix indicates compatibility with a +5 V analog supply. Consider the SSOP package dimensions for PCB layout constraints. Verify that the serial interface timing requirements align with the host microcontroller or DSP capabilities.

Part Context

This component belongs to the AD7714 family of signal conditioning ADCs designed for high-precision measurements. It shares architectural similarities with other devices in the series but differs in package options and specific supply voltage configurations. The ARSZ-5 designation specifically identifies the shrink small outline package variant optimized for the 5 V operating range.

Replacement Considerations

Direct replacements within the same family include the AD7714AR-5 (SOIC package) or AD7714AN-5 (DIP package). For upgraded performance, the AD7714YRUZ-REEL7 offers extended temperature ranges and lower power consumption in a TSSOP package.