DESCRIPTION

· The Si8900/1/2 series are isolated monitoring ADCs designed for linear signal galvanic isolation, level shifting, and ground loop elimination in power-delivery systems and solar inverters.

· They integrate a 10-bit SAR ADC subsystem, supervisory state machine, and isolated UART (Si8900), I2C/SMbus port (Si8901), or SPI Port (Si8902) in a single package.

· Based on proprietary CMOS isolation technology, these devices offer 2.5 or 5 kV isolation ratings and are safety certified by UL, CSA, and VDE.

· They feature a typical common-mode transient immunity of 45 kV/µs, ensuring robust performance in noisy and high-voltage environments.

· Available in 16-pin SOIC wide-body packages.

FEATURES

· 10-bit SAR ADC with 3 input channels and 2.5 µs conversion time.

· Isolated serial I/O ports: UART (Si8900), I2C/SMbus (Si8901), and 2 MHz SPI port (Si8902).

· Common-mode transient immunity: 45 kV/µs (typical).

· Operating temperature range: –40 to +85 °C.

· >60-year life at rated working voltage.

· Safety certifications: CSA component notice 5A, IEC 60950, 62368, 60601, VDE 0884-10, and UL1577 (up to 5 kVrms for 1 minute).

APPLICATIONS

· Isolated data acquisition.

· AC mains monitoring.

· Solar inverters.

· Isolated temperature and humidity sensing.

· Switch mode power systems.

· Telemetry.