Overview
The SI8900D-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, including power-delivery systems and solar inverters.
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 | |
| Input Side Supply Current | IDDA | VDDA = 3.3 V, Si890x idle | 8.6 | 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 | |||
| SPI Port Bit Rate | Mode 3: CPOL = 1, CPHA = 1 | 2 | Mbps | |||
| Isolation Voltage | 5.0 | kV | ||||
| Temperature Range | –40 | +85 | °C |
Key Features
- 10-bit SAR ADC subsystem with 3 input channels and 2.5 µs conversion time.
- Isolated serial I/O port: UART (Si8900), I2C/SMbus (Si8901), or SPI Port (Si8902).
- Transient immunity: 45 kV/µs (typical) for robust performance in noisy and high-voltage 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.
- More than 60-year life at rated working voltage.
Applications
The SI8900D-A01-GS is particularly useful in various applications requiring isolated signal monitoring and transmission. These include:
- Power-delivery systems: Ensuring safe and reliable monitoring of power parameters.
- Solar inverters: Providing isolated signal conversion and transmission in solar power systems.
- Industrial control systems: Acting as galvanic isolators and level shifters to protect against ground loops and high-voltage transients.
- Medical devices: Complying with safety standards such as IEC 60601 for medical equipment.
Q & A
- What is the primary function of the SI8900D-A01-GS?
The primary function is to convert analog input signals into digital format and transmit the data through an isolated serial interface. - What types of serial interfaces are available in the Si8900/1/2 series?
The series includes UART (Si8900), I2C/SMbus (Si8901), and SPI Port (Si8902) interfaces. - What is the isolation voltage rating for the SI8900D-A01-GS?
The isolation voltage rating is up to 5.0 kV. - What is the temperature range for the SI8900D-A01-GS?
The temperature range is –40 to +85 °C. - How many input channels does the ADC have?
The ADC has 3 input channels. - What is the resolution and conversion time of the ADC?
The ADC has a 10-bit resolution and a conversion time of 2.5 µs. - What safety certifications does the SI8900D-A01-GS hold?
The device is safety certified by UL, CSA, and VDE, and complies with standards such as IEC 60950, 62368, and 60601. - In what package type is the SI8900D-A01-GS available?
The device is available in a 16-pin SOIC wide-body package. - What is the typical transient immunity performance of the SI8900D-A01-GS?
The typical transient immunity performance is 45 kV/µs. - How long is the expected life of the SI8900D-A01-GS at rated working voltage?
The expected life is more than 60 years at rated working voltage.
