SI8901D-A01-GSR

Analog To Digital Converters (ADC) Overview

The SI8901D-A01-GSR is a 10-bit isolated monitoring ADC from the Si890x series, manufactured by Skyworks Solutions. It integrates a single-ended analog-to-digital converter with three input channels and an I2C/SMBus serial interface. The device utilizes proprietary CMOS isolation technology to provide up to 5 kVrms isolation voltage for basic protection. Key electrical parameters include a 2.7 V to 3.6 V input supply range (VDDA), a 2.7 V to 5.5 V output supply range (VDDB), and an operating temperature range of -40 °C to +85 °C. The ADC conversion time is typically 2.5 µs, and the I2C/SMBus port supports bit rates up to 240 kbps.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a 10-bit SAR ADC subsystem with a three-channel multiplexer and programmable gain amplifier.
• Features an on-chip I2C/SMBus serial port for communication with external master processors.
• Provides galvanic isolation based on proprietary CMOS technology with high common-mode transient immunity.

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required isolation rating and package type. Ensure compliance with RoHS directives and check for any relevant safety certifications such as UL, CSA, or VDE before integration into final designs.

Analog To Digital Converters (ADC) Selection Notes

Select this model when an I2C or SMBus interface is required for the isolated ADC application. Compare against the Si8900 series if UART connectivity is preferred, or the Si8902 series if SPI communication is necessary. Verify that the 5 kV isolation rating meets the system's safety requirements and that the 10-bit resolution satisfies the signal accuracy needs.

Analog To Digital Converters (ADC) Part Context

This component belongs to the Si8900/1/2 family of isolated monitoring ADCs. All members share identical ADC performance characteristics, including resolution, conversion time, and channel count. The primary distinction within the family lies in the integrated serial communication protocol: UART for Si8900, I2C/SMBus for Si8901, and SPI for Si8902.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional replacements within the same family include the SI8900D-A01-GSR (UART interface) and SI8902D-A01-GSR (SPI interface). These parts share the same pinout and ADC specifications but differ in their digital communication protocols. Ensure the host controller supports the alternative interface before substitution.