AD7402-8BRIZ

ADCs/DACs - Special Purpose Overview

The AD7402-8BRIZ is a 16-bit isolated Sigma-Delta modulator from Analog Devices. It integrates an internal 10 MHz clock and reference voltage, converting analog signals into a high-speed single-bit data stream. The device features on-chip digital isolation based on iCoupler technology, providing galvanic separation between the analog input and digital output. Key electrical specifications include a typical signal-to-noise ratio (SNR) of 87 dB, an effective number of bits (ENOB) of 13.5 bits, and a full-scale analog input range of ±320 mV. It operates within a temperature range of -40°C to +105°C.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 10 MHz internal clock and precision reference voltage
• On-chip digital isolator with >25 kV/µs common-mode transient immunity
• 16-bit resolution with guaranteed no missing codes
• 8-lead wide-body SOIC package for increased creepage distance

ADCs/DACs - Special Purpose Applications

• Shunt current monitoring in high-voltage systems
• AC motor control feedback loops
• Power and solar inverters
• Wind turbine inverters
• Data acquisition systems requiring galvanic isolation

ADCs/DACs - Special Purpose Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm RoHS compliance status via official documentation. Ensure storage conditions respect humidity sensitivity classifications. Validate that the specific ordering suffix matches the required packaging format. Cross-reference safety certifications such as UL 1577 and VDE approvals against project requirements.

ADCs/DACs - Special Purpose Selection Notes

Select this component when high-side current sensing with integrated isolation is required. The internal clock eliminates external oscillator needs, simplifying design. Ensure the digital filter downstream supports the recommended sinc3 architecture for optimal SNR. Verify that the system voltage levels align with the 4.5 V to 5.5 V analog supply and 3 V to 5.5 V digital supply constraints.

ADCs/DACs - Special Purpose Part Context

This part belongs to the AD740x family of isolated Sigma-Delta modulators. It serves as a direct replacement for traditional optocoupler-based isolation solutions combined with separate ADCs. The wide-body SOIC package distinguishes it from standard narrow SOIC packages by offering enhanced clearance and creepage distances for safety compliance.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Designers should consult Analog Devices for equivalent isolated ADC solutions if pin compatibility is not required.