ADUM7703-8BRIZ-RL7

ADCs/DACs - Special Purpose Overview

The ADUM7703-8BRIZ-RL7 is a 16-bit, isolated Sigma-Delta analog-to-digital converter (ADC) from Analog Devices. It integrates an on-chip digital isolator based on iCoupler technology, providing 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 operates from a 4.5 V to 20 V supply on the isolated side (VDD1). The digital interface supports 3 V or 5.5 V logic levels (VDD2). Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 86 dB, an Effective Number of Bits (ENOB) of 14 bits, and a maximum main clock frequency of 21 MHz. At a 20 MHz clock with a 256 decimation rate, it delivers a data rate of 78.1 kSPS.

ADCs/DACs - Special Purpose Feature Summary

• Integrated iCoupler digital isolator with high CMTI of 150 kV/µs minimum
• 16-bit resolution with no missing codes and ±320 mV full-scale input range
• Operates from 4.5 V to 20 V on the isolated side (VDD1)
• Supports 3 V or 5.5 V digital logic supplies (VDD2)

ADCs/DACs - Special Purpose Applications

• Shunt current monitoring in high-voltage systems
• AC motor controls and drives
• Power and solar inverters
• Wind turbine inverters

ADCs/DACs - Special Purpose Procurement Notes

Verify that the specific ordering suffix corresponds to the 8-lead SOIC_IC package variant when sourcing this component. Confirm regulatory compliance requirements such as UL 1577 or IEC 60601-1 against the specific batch documentation. Ensure the procurement channel provides valid datasheets matching Rev. B specifications for accurate integration planning.

ADCs/DACs - Special Purpose Selection Notes

Select the ADUM7703-8BRIZ-RL7 when a compact 8-lead wide-body SOIC package with increased creepage distance is required. This variant supports an operating temperature range up to +105°C. Choose this part over the 16-lead version if board space is constrained but high isolation voltage ratings are still necessary for the application design.

ADCs/DACs - Special Purpose Part Context

This component belongs to the ADuM7701/ADuM7702/ADuM7703 family of isolated ADCs. The ADUM7703 specifically offers a wider analog input range compared to the ADuM7701 and ADuM7702 variants. The -RL7 suffix indicates reel packaging for automated assembly processes, distinguishing it from tube-packaged equivalents within the same product line.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements within the ADuM7703 family include the 16-lead SOIC_W variant (e.g., ADUM7703BRWZ). Cross-family replacement with non-isolated ADCs requires external isolation components and circuit redesign.