SI8920AD-IS

Product Overview

Category: Integrated Circuit
Use: Signal Isolator
Characteristics: High-speed, high-precision, galvanic isolation
Package: SOIC-16
Essence: Provides electrical isolation between input and output signals
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Isolation Voltage: 2.5 kVrms
Supply Voltage: 3.0 V to 5.5 V
Operating Temperature Range: -40°C to +125°C
Input Current: ±10 mA
Output Current: ±20 mA
Propagation Delay: 50 ns (typical)
Common Mode Rejection Ratio: 80 dB (typical)

Pin Configuration

The SI8920AD-IS has a total of 16 pins arranged as follows:

VDD
GND
IN+
IN-
NC
NC
NC
NC
NC
NC
NC
NC
NC
OUT-
OUT+
NC

Functional Features

Galvanic isolation between input and output signals
High-speed data transmission
Low power consumption
Wide operating temperature range
High common mode rejection ratio
Robust ESD protection

Advantages and Disadvantages

Advantages: - Provides reliable electrical isolation - High-speed performance - Suitable for harsh environments - Low power consumption

Disadvantages: - Limited number of channels - Relatively high cost compared to non-isolated alternatives

Working Principles

The SI8920AD-IS utilizes transformer-based isolation technology to provide electrical isolation between the input and output signals. The input signal is coupled to the primary side of the transformer, which magnetically induces a corresponding signal on the secondary side. This allows for galvanic isolation, preventing any direct electrical connection between the input and output.

Detailed Application Field Plans

The SI8920AD-IS is commonly used in various applications, including:

Industrial automation systems
Motor control circuits
Power grid monitoring
Medical equipment
Isolated data acquisition systems

Alternative Models

Below are some alternative models that offer similar functionality:

ADuM1200ARZ-RL7
ISO124P
MAX14850
HCPL-7800A-000E
TLP2355

These models can be considered based on specific requirements and design constraints.

In conclusion, the SI8920AD-IS is a high-performance signal isolator integrated circuit. It provides reliable electrical isolation, high-speed data transmission, and is suitable for various industrial and medical applications. While it has certain limitations such as limited channels and higher cost, it offers significant advantages in terms of performance and reliability.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SI8920AD-IS v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SI8920AD-IS in technical solutions:

Q: What is SI8920AD-IS? A: SI8920AD-IS is a digital isolator designed for high-speed data transmission and isolation in industrial applications.
Q: What are the key features of SI8920AD-IS? A: Some key features include high-speed data rates up to 150 Mbps, reinforced isolation up to 5 kV, low power consumption, and wide temperature range operation.
Q: What are the typical applications of SI8920AD-IS? A: SI8920AD-IS is commonly used in applications such as motor drives, power inverters, industrial automation, isolated interfaces, and communication systems.
Q: How does SI8920AD-IS provide isolation? A: SI8920AD-IS uses capacitive coupling and proprietary digital isolation technology to provide galvanic isolation between input and output sides.
Q: What is the maximum data rate supported by SI8920AD-IS? A: SI8920AD-IS supports a maximum data rate of 150 Mbps, making it suitable for high-speed communication applications.
Q: Can SI8920AD-IS operate in harsh environments? A: Yes, SI8920AD-IS is designed to operate in a wide temperature range (-40°C to +125°C) and can withstand high-voltage transients, making it suitable for harsh industrial environments.
Q: Does SI8920AD-IS require external components for operation? A: No, SI8920AD-IS is a fully integrated digital isolator and does not require any external components for its operation.
Q: What is the power supply voltage range for SI8920AD-IS? A: SI8920AD-IS operates with a power supply voltage range of 3.0V to 5.5V.
Q: Can SI8920AD-IS be used in safety-critical applications? A: Yes, SI8920AD-IS is certified for reinforced isolation up to 5 kV and meets various safety standards, making it suitable for safety-critical applications.
Q: Are there any evaluation boards or reference designs available for SI8920AD-IS? A: Yes, Silicon Labs provides evaluation boards and reference designs that can help users quickly prototype and integrate SI8920AD-IS into their technical solutions.

Please note that the answers provided here are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.