AD7400YRWZ-REEL

ADCs/DACs - Special Purpose Overview

The AD7400YRWZ-REEL is an isolated Sigma-Delta modulator from Analog Devices Inc., housed in a 16-lead SOIC package. It converts analog input signals into a high-speed, single-bit data stream with on-chip digital isolation based on iCoupler technology. The device operates from a 5 V supply (VDD1: 4.5–5.25 V) and accepts differential inputs of ±200 mV. Key electrical parameters include a 10 MHz clock rate, 16-bit resolution with no missing codes, ±2 LSB typical INL, and low power consumption of 18 mA maximum at 5.25 V. It features an internal reference and supports serial I/O with VDD2 ranging from 3 V to 5.5 V.

ADCs/DACs - Special Purpose Feature Summary

• Second-order Sigma-Delta modulator with 10 MHz clock rate and 16-bit resolution
• On-chip digital isolation providing 5000 V rms isolation voltage per UL 1577
• Integrated voltage reference and low offset drift of 3.5 µV/°C maximum
• Operates within −40°C to +105°C temperature range in a 16-lead SOIC package

ADCs/DACs - Special Purpose Applications

• AC motor controls
• Data acquisition systems
• A/D plus opto-isolator replacements

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix for packaging requirements. The REEL suffix indicates tape-and-reel packaging suitable for automated assembly processes. Confirm RoHS compliance status and ensure compatibility with standard SMD/SMT placement equipment. Check for any regional distribution restrictions or lead time variations associated with this specific reel configuration.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7400YRWZ-REEL when system design requires galvanic isolation between analog front-end and digital processing without external isolators. Ensure the application can accommodate the required split power supplies (VDD1 and VDD2) and provides adequate decoupling near the pins. Verify that the downstream digital filter, such as a Sinc3 filter, matches the 10 MHz modulator clock speed for optimal signal reconstruction.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AD7400 series of isolated data converters. It serves as a direct replacement for traditional A/D converter and optocoupler combinations, simplifying board layout by integrating isolation barriers directly into the ADC structure. The Y version denotes industrial temperature range operation, distinguishing it from commercial variants if available.

ADCs/DACs - Special Purpose Replacement Considerations

The AD7400YRWZ-REEL7 is functionally identical but supplied in a different reel quantity configuration. Designers replacing discrete isolator solutions should verify that the new integrated approach meets all safety certification requirements, including VIORM and VISO ratings specified in the datasheet.