Overview
The SI8902B-A01-GS is a member of the Si8900/1/2 series of isolated monitoring Analog-to-Digital Converters (ADCs) produced by Skyworks Solutions, Inc. 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 serial communication port, specifically a 2 MHz SPI port for the SI8902 model. The Si8902B-A01-GS is built using proprietary CMOS isolation technology and is available in a 16-pin wide-body SOIC package.
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 | |||
| SPI Port Bit Rate | Mode 3: CPOL = 1, CPHA = 1 | 2 Mbps | ||||
| Isolation Voltage | 2.5 kV | Vrms | ||||
| Temperature Range | –40 | +85 | °C |
Key Features
- 10-bit SAR ADC subsystem with 3 input channels and a conversion time of 2.5 µs.
- Isolated 2 MHz SPI port for serial communication.
- Proprietary CMOS isolation technology with options for 2.5 or 5 kV isolation ratings.
- Transient immunity of 45 kV/µs for robust performance in noisy and high-voltage environments.
- Safety certifications from UL, CSA, and VDE, including IEC 60950, 62368, and 60601 compliance.
- Available in 16-pin wide-body SOIC packages.
Applications
The SI8902B-A01-GS is suitable for various applications requiring isolated signal monitoring and transmission. These include:
- Power-delivery systems.
- Solar inverters.
- Industrial control systems where galvanic isolation is necessary.
- Medical devices requiring high isolation and safety standards.
- Automotive systems where robust performance in noisy environments is critical.
Q & A
- What is the primary function of the SI8902B-A01-GS? The primary function is to convert analog input signals into digital format and transmit the data through an isolated SPI port.
- What is the resolution of the ADC in the SI8902B-A01-GS? The ADC has a 10-bit resolution.
- What is the conversion time of the ADC? The conversion time is 2.5 µs.
- What type of serial communication port does the SI8902B-A01-GS have? It has a 2 MHz SPI port.
- What is the isolation voltage rating for the SI8902B-A01-GS? It is rated up to 2.5 kVrms isolation voltage.
- What are the safety certifications for this device? It is certified by UL, CSA, and VDE, and complies with IEC 60950, 62368, and 60601 standards.
- What is the temperature range for the SI8902B-A01-GS? The operating temperature range is from –40 to +85 °C.
- What is the transient immunity performance of the SI8902B-A01-GS? It has a typical common-mode transient immunity performance of 45 kV/µs.
- In what package is the SI8902B-A01-GS available? It is available in a 16-pin wide-body SOIC package.
- What are some typical applications for the SI8902B-A01-GS? Typical applications include power-delivery systems, solar inverters, industrial control systems, medical devices, and automotive systems.
