DESCRIPTION

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

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

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

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

FEATURES

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

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

· Transient immunity: 45 kV/µs (typ).

· 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 recognized (up to 5 kVrms for 1 minute).

APPLICATIONS

· Isolated data acquisition and AC mains monitoring.

· Solar inverters and isolated temperature/humidity sensing.

· Switch mode power systems and telemetry.

· Safety-certified for use in various high-voltage and noisy environments.