Overview
The SI8900B-A01-GS, produced by Skyworks Solutions Inc., is part of the Si8900/1/2 series of isolated monitoring Analog-to-Digital Converters (ADCs). These devices are designed to serve as linear signal galvanic isolators, level shifters, and ground loop eliminators. They integrate a 10-bit Successive Approximation Register (SAR) ADC subsystem, a supervisory state machine, and an isolated UART interface in a single package. This integration makes them highly suitable for various applications requiring high isolation and robust performance in noisy and high-voltage environments.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Side Supply Voltage | VDDA | With respect to GNDA | 2.7 | 3.6 | V | |
| Input Side Supply Current | IDDA | VDDA = 3.3 V, Si890x active | 10 | 13.3 | mA | |
| Logic Low Level Output Voltage | VOL | VDDB = 3.3 to 5 V, IOL = 4 mA | 0.2 | 0.4 | V | |
| Digital Output Source Impedance | ROUT | 50 | Ω | |||
| UART Bit Rate | 60 | 500 kbps | ||||
| Isolation Voltage | 2.5 kV | Vrms | ||||
| Conversion Time | 2.5 μs | |||||
| Temperature Range | –40 | +85 °C |
Key Features
- 10-bit SAR ADC subsystem with 3 input channels and 2.5 μs conversion time.
- Isolated UART interface for serial communication.
- Transient immunity of 45 kV/μs for robust performance in noisy environments.
- Safety certified by UL, CSA, and VDE with approvals such as IEC 60950, 62368, and 60601.
- Available in 16-pin SOIC wide-body packages.
- Operating temperature range of –40 to +85 °C.
- More than 60-year life at rated working voltage.
Applications
The SI8900B-A01-GS is particularly useful in applications requiring high isolation and robust performance, such as:
- Power-delivery systems.
- Solar inverters.
- Industrial control systems.
- Medical devices requiring high isolation.
- Automotive systems where noise immunity is crucial.
Q & A
- What is the primary function of the SI8900B-A01-GS?
The primary function is to convert input signals into digital format and transmit the data through an isolated UART interface. - What is the resolution of the ADC in the SI8900B-A01-GS?
The ADC has a 10-bit resolution. - What is the typical conversion time of the ADC?
The typical conversion time is 2.5 μs. - What are the available communication interfaces for the SI8900 series?
The SI8900 series offers UART (SI8900), I2C/SMbus (SI8901), and SPI (SI8902) interfaces. - What is the isolation voltage rating for the SI8900B-A01-GS?
The isolation voltage rating is 2.5 kVrms. - What are the safety certifications for the SI8900B-A01-GS?
The device is safety certified by UL, CSA, and VDE, with approvals such as IEC 60950, 62368, and 60601. - What is the operating temperature range of the SI8900B-A01-GS?
The operating temperature range is –40 to +85 °C. - How many input channels does the ADC have?
The ADC has 3 input channels. - What is the transient immunity performance of the SI8900B-A01-GS?
The device has a typical common-mode transient immunity performance of 45 kV/μs. - In what package type is the SI8900B-A01-GS available?
The device is available in a 16-pin SOIC wide-body package.
