ADUM7703BRWZ

ADCs/DACs - Special Purpose Overview

The ADUM7703BRWZ is a 16-bit, isolated Sigma-Delta analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It integrates an on-chip digital isolator based on iCoupler technology and a low dropout (LDO) regulator. The device accepts a pseudo-differential analog input signal with a full-scale range of ±320 mV and operates from a VDD1 supply of 4.5 V to 20 V. It features a main clock input frequency ranging from 5 MHz to 21 MHz. Key performance specifications include a typical Signal-to-Noise Ratio (SNR) of 86 dB, an Effective Number of Bits (ENOB) of 14 bits, and a maximum power dissipation of 133 mW at VDD2 = 3 V. The component is housed in a 16-lead wide-body SOIC package.

ADCs/DACs - Special Purpose Feature Summary

• Integrated digital isolation with high common-mode transient immunity (CMTI) of 150 kV/µs minimum
• 16-bit resolution with no missing codes and ±2 LSB integral nonlinearity (INL)
• On-board LDO regulator supporting VDD1 operation up to 20 V
• Wide operating temperature range of −40°C to +125°C

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix BRWZ corresponds to the 16-lead wide-body SOIC package variant. Confirm that the procurement documentation explicitly lists this part number as distinct from other ADuM7703 variants such as the 8-lead SOIC_IC or reel-based packaging options. Ensure compliance with humidity sensitivity classifications if storage conditions are critical.

ADCs/DACs - Special Purpose Selection Notes

Select the ADUM7703BRWZ when a 16-lead wide-body SOIC package is required for higher creepage distances compared to the 8-lead variant. This model supports a maximum operating temperature of +125°C, suitable for harsh industrial environments. Ensure the application requires a pseudo-differential input range of ±250 mV to ±320 mV and can accommodate a main clock frequency between 5 MHz and 21 MHz.

ADCs/DACs - Special Purpose Part Context

The ADUM7703BRWZ belongs to the ADuM7703 family of isolated Sigma-Delta ADCs. It is distinguished by its 16-lead wide-body SOIC_W package, which provides enhanced insulation characteristics compared to the 8-lead SOIC_IC version. The 'BRWZ' suffix indicates the specific package type, tape and reel or tube availability may vary by manufacturer distribution channels.

ADCs/DACs - Special Purpose Replacement Considerations

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