SI8901B-A02-GS

ADCs/DACs - Special Purpose Overview

The SI8901B-A02-GS is an isolated monitoring analog-to-digital converter (ADC) from Skyworks Solutions. It integrates a 10-bit SAR ADC subsystem with three single-ended input channels and an I2C/SMBus serial port. The device provides galvanic isolation based on proprietary CMOS technology, supporting up to 5 kVrms isolation ratings. Electrical specifications include a typical common-mode transient immunity of 45 kV/µs and a conversion time of 2.5 µs. It operates within an ambient temperature range of –40 °C to +85 °C and is housed in a 16-pin wide-body SOIC package.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 10-bit SAR ADC with three single-ended input channels
• I2C/SMBus serial interface operating at bit rates up to 240 kbps
• Proprietary CMOS isolation technology with up to 5 kVrms rating
• Typical common-mode transient immunity of 45 kV/µs

ADCs/DACs - Special Purpose Applications

• Isolated data acquisition systems
• AC mains monitoring
• Solar inverters
• Switch mode power systems
• Telemetry applications

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix 'A02' against the manufacturer's current documentation to confirm the exact isolation voltage rating and safety certification level. Confirm availability status as product lifecycles may change. Ensure compliance with RoHS requirements for the intended application environment.

ADCs/DACs - Special Purpose Selection Notes

Select this component when an I2C or SMBus interface is required for isolated signal acquisition. The device supports Demand Mode and Burst Mode operations for flexible data sampling. Ensure the master controller can handle the half-duplex nature of the I2C communication and provide necessary pull-up resistors for the SDA and SCL lines.

ADCs/DACs - Special Purpose Part Context

This part belongs to the Si8900/1/2 family of isolated monitoring ADCs. The Si8901 variant specifically features an I2C/SMBus port, distinguishing it from the UART-based Si8900 and SPI-based Si8902. All variants share the same core ADC architecture and isolation capabilities while differing only in their digital communication interfaces.

ADCs/DACs - Special Purpose Replacement Considerations

Direct replacements within the same family include the Si8900 series for UART interfaces or the Si8902 series for SPI interfaces. Verify that the replacement maintains the required isolation voltage and package dimensions.