AD7405BRIZ-RL7

ADCs/DACs - Special Purpose Overview

The AD7405BRIZ-RL7 is a 16-bit isolated Sigma-Delta modulator featuring an integrated digital isolator and on-board reference. It converts analog signals into a high-speed single-bit LVDS data stream using an external clock ranging from 5 MHz to 20 MHz. The device operates with a 4.5 V to 5.5 V supply for the analog side (VDD1) and a 3 V to 5.5 V supply for the digital interface (VDD2). Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 88 dB, an Effective Number of Bits (ENOB) of 14.2 bits, and a full-scale differential input voltage range of ±320 mV. It provides high common-mode transient immunity exceeding 25 kV/µs.

ADCs/DACs - Special Purpose Feature Summary

• Integrated monolithic digital isolation with >25 kV/µs common-mode transient immunity
• On-chip voltage reference and second-order Sigma-Delta modulation architecture
• Low Voltage Differential Signaling (LVDS) interface for robust high-speed data transmission
• Safety approvals including UL 1577 (5000 V rms), IEC/CSA 62368-1, and IEC/60601-1

ADCs/DACs - Special Purpose Applications

• Shunt current monitoring in high-voltage environments
• AC motor controls and drives
• Power and solar inverters
• Wind turbine inverters
• Data acquisition systems requiring galvanic isolation

ADCs/DACs - Special Purpose Procurement Notes

Verify that the ordering suffix RL7 corresponds to the specific reel packaging configuration required for automated assembly processes. Confirm that the wide-body SOIC-16 package dimensions align with the PCB footprint design, particularly regarding the increased creepage distance requirements mandated by the safety certifications.

ADCs/DACs - Special Purpose Selection Notes

Select this component when system designs require high isolation voltage ratings combined with precision analog-to-digital conversion in a compact form factor. Ensure the external clock frequency falls within the 5 MHz to 20 MHz range to maintain specified dynamic performance. Verify that the digital filter implementation supports the required decimation rate to achieve the target output data rate and resolution.

ADCs/DACs - Special Purpose Part Context

This part belongs to the AD7405 series of isolated Sigma-Delta modulators manufactured by Analog Devices. It utilizes iCoupler technology to provide galvanic isolation between the analog input domain and the digital output domain, replacing traditional discrete optocoupler solutions with higher performance and reliability characteristics.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.