AD7403-8BRIZ

ADCs/DACs - Special Purpose Overview

The AD7403-8BRIZ is a 16-bit isolated Sigma-Delta modulator from Analog Devices, housed in an 8-lead wide-body SOIC package. It operates with a 5 V analog supply (VDD1) and a 3 V to 5.5 V digital supply (VDD2). The device accepts a differential input range of ±250 mV for specified performance, extending to ±320 mV full scale. It converts analog signals into a high-speed single-bit data stream at clock rates between 5 MHz and 20 MHz. Integrated iCoupler technology provides galvanic isolation with a typical offset drift of 2 µV/°C and a common-mode transient immunity exceeding 25 kV/µs.

ADCs/DACs - Special Purpose Feature Summary

• 16-bit resolution with guaranteed no missing codes and 88 dB typical SNR
• Integrated on-chip digital isolator using iCoupler technology
• High common-mode transient immunity greater than 25 kV/µs
• Wide-body SOIC-8 package designed for increased creepage distance

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix BRIZ corresponds to the 8-lead wide-body SOIC package and the -40°C to +105°C operating temperature range. Confirm that the ordering code matches the exact insulation ratings and safety approvals required for the target application environment.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7403-8 variant over the standard AD7403 when space constraints require an 8-lead package or when the +105°C maximum operating temperature is sufficient. Ensure the external master clock frequency falls within the 5 MHz to 20 MHz range to maintain specified dynamic performance and timing parameters.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AD7403 family of isolated Sigma-Delta modulators. The AD7403-8 variant shares the same core modulation architecture as the 16-lead AD7403 but utilizes a compact 8-lead footprint. It is designed to replace traditional discrete isolation solutions in precision measurement applications.

ADCs/DACs - Special Purpose Replacement Considerations

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