ADUM7704-8BRIZ-RL7

ADCs/DACs - Special Purpose Overview

The ADUM7704-8BRIZ-RL7 is a 16-bit, isolated Sigma-Delta modulator from Analog Devices. It utilizes iCoupler technology to provide galvanic isolation between the analog input and digital output. The device accepts a pseudo-differential analog input with a full-scale range of ±64 mV and converts it into a high-speed single-bit data stream. Key electrical parameters include a typical Signal-to-Noise Ratio (SNR) of 82 dB, an Effective Number of Bits (ENOB) of 13 bits, and a maximum main clock frequency of 21 MHz. It operates from a 4.5 V to 20 V supply for the analog side and 3 V to 5.5 V for the digital side.

ADCs/DACs - Special Purpose Feature Summary

• Integrated on-chip digital isolator with 150 kV/µs minimum common-mode transient immunity
• 16-bit resolution with no missing codes and ±64 mV full-scale input range
• High performance: 82 dB typical SNR and 13-bit ENOB at 78.1 kSPS
• Wide operating temperature range: −40°C to +105°C for the 8-lead SOIC_IC package

ADCs/DACs - Special Purpose Applications

• Shunt current monitoring in high-voltage systems
• AC motor controls and drives
• Power and solar inverters
• Wind turbine inverters
• Replacement for traditional analog-to-digital converters and optoisolators

ADCs/DACs - Special Purpose Procurement Notes

Verify that the specific ordering suffix -RL7 corresponds to the reel packaging format as indicated by standard industry conventions for this manufacturer, though the datasheet primarily lists tube options. Confirm the 8-lead SOIC_IC package variant matches the required creepage and clearance distances for your insulation application. Ensure compatibility with the specified voltage ranges for both isolated and non-isolated domains.

ADCs/DACs - Special Purpose Selection Notes

Select the ADUM7704-8BRIZ-RL7 when a compact 8-lead wide-body SOIC package is required with extended creepage distance compared to the 16-lead version. This component is suitable for applications requiring up to 21 MHz main clock input and digital filtering downstream. Consider the power dissipation limits and thermal resistance characteristics if operating near the upper temperature extremes or with high duty cycles.

ADCs/DACs - Special Purpose Part Context

This part belongs to the ADuM7704 family of isolated Sigma-Delta modulators. The 8-lead SOIC_IC variant offers increased creepage distance compared to standard packages, making it suitable for reinforced insulation requirements under standards such as IEC/EN/CSA 62368-1 and DIN EN IEC 60747-17. It serves as a direct interface between low-level analog signals and digital processing units across isolation barriers.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers replacing legacy components should verify that the new solution supports pseudo-differential inputs, provides equivalent isolation ratings (e.g., 5700 Vrms), and can interface with the existing digital filter architecture.