AD7402-8BRIZ-RL7

ADCs/DACs - Special Purpose Overview

The AD7402-8BRIZ-RL7 is a 16-bit isolated Sigma-Delta modulator from Analog Devices, packaged in an 8-lead wide-body SOIC. It integrates a second-order modulator with on-chip digital isolation using iCoupler technology and an internal reference. The device operates with a 4.5 V to 5.5 V analog supply (VDD1) and a 3 V to 5.5 V digital supply (VDD2). It accepts a differential input range of ±320 mV, producing a 10 MHz single-bit data stream. With a sinc3 filter at 256 decimation, it achieves 39 kSPS throughput, 87 dB SNR, and 13.5 ENOB.

ADCs/DACs - Special Purpose Feature Summary

• Integrated iCoupler digital isolator providing >25 kV/µs common-mode transient immunity
• 16-bit resolution with guaranteed no missing codes and 87 dB typical SNR
• On-board voltage reference and 10 MHz internal clock
• 8-lead wide-body SOIC package for increased creepage distance

ADCs/DACs - Special Purpose Applications

• Shunt current monitoring
• AC motor controls
• Power and solar inverters
• Wind turbine inverters
• Data acquisition systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the ordering suffix -RL7 indicates reel packaging upon procurement. Confirm that the specific revision matches the required safety certifications, such as UL 1577 or DIN EN IEC 60747-17, for the target application's insulation requirements.

ADCs/DACs - Special Purpose Selection Notes

Select this component when high isolation voltage and low offset drift are critical. Ensure the external digital filter supports a sinc3 architecture with a 256 decimation rate to achieve the specified 16-bit performance. Verify that the system can accommodate the ±320 mV full-scale input range.

ADCs/DACs - Special Purpose Part Context

This part belongs to the AD740x family of isolated Sigma-Delta modulators. It serves as a direct replacement for traditional solutions combining discrete ADCs and optocouplers, offering superior performance through monolithic transformer-based isolation and integrated signal conditioning.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers: AD7402-8BRIZ, AD7402-8BRIZ-RL.