ADUM7701BRWZ-RL

ADCs/DACs - Special Purpose Overview

The ADuM7701BRWZ-RL is a 16-bit, isolated Sigma-Delta modulator manufactured by Analog Devices Inc. It utilizes iCoupler technology to provide galvanic isolation between the analog input and digital output. The device accepts a pseudo-differential analog input signal with a full-scale range of ±320 mV and converts it into a high-speed single-bit data stream. Key electrical parameters include an 86 dB typical Signal-to-Noise Ratio (SNR), 14 bits Effective Number of Bits (ENOB), and a maximum main clock frequency of 21 MHz. It operates from a 4.5 V to 5.5 V supply on the isolated side and a 3 V to 5.5 V supply on the digital side.

ADCs/DACs - Special Purpose Feature Summary

• Integrated on-chip digital isolator based on iCoupler technology
• 16-bit resolution with no missing codes and 86 dB typical SNR
• High common-mode transient immunity of 150 kV/µs minimum
• Wide-body SOIC-16 package with UL 1577 and IEC/EN/CSA 62368-1 approvals

ADCs/DACs - Special Purpose Applications

• Shunt current monitoring
• AC motor controls
• Power and solar inverters
• Wind turbine inverters
• Analog-to-digital and optoisolator replacement

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific package variant against the datasheet ordering guide, as the BRWZ suffix corresponds to the 16-lead wide-body SOIC. Confirm that the required insulation ratings, such as VIORM of 1401 VPEAK, align with the safety standards of the target application. Ensure power supply decoupling capacitors are placed close to the VDD pins as specified in the circuit information section.

ADCs/DACs - Special Purpose Selection Notes

Select this component when high-speed serial data transmission across an isolation barrier is required without an internal LDO regulator. The ADuM7701 requires an external sinc3 digital filter to achieve its specified 16-bit performance at 78.1 kSPS. Compare against the ADUM7703 if an integrated LDO for the analog side is preferred, or the ADUM7701 if a lower cost 8-lead option suffices for the creepage requirements.

ADCs/DACs - Special Purpose Part Context

This part belongs to the ADuM7701 family of isolated Sigma-Delta modulators. It serves as a direct replacement for traditional optocoupler-based ADC solutions in high-voltage environments. The BRWZ designation specifically identifies the 16-lead wide-body SOIC package, which offers higher creepage and clearance distances compared to the standard 8-lead variant.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers: ADUM7701BRUZ (standard SOIC-16), ADUM7701BRIZ (8-lead SOIC_IC).

ADCs/DACs - Special Purpose FAQ

What is the maximum main clock frequency supported by the ADuM7701?

The ADuM7701 supports a main clock input frequency range of 5 MHz to 21 MHz.

How does the ADuM7701 handle common-mode transients?

It provides a minimum common-mode transient immunity (CMTI) of 150 kV/µs when VDD2 is 3.3 V or 5.5 V.

What is the input voltage range for specified performance?

For specified performance, the pseudo-differential input voltage range is ±250 mV, with a full-scale range of ±320 mV.