ADG408BRZ Detailed explanation of pin function specifications and circuit principle instructions
The part number "ADG408BRZ" corresponds to a specific integrated circuit (IC) made by Analog Devices (ADI). It is a type of Analog Multiplexer/Demultiplexer. The device is typically used in various applications requiring signal routing and multiplexing, such as audio, video, and measurement systems.
Here is the detailed explanation, pin function specifications, circuit principle instructions, and the FAQ, organized as requested.
Device Overview
Brand: Analog Devices (ADI) Type: Analog Multiplexer/Demultiplexer (also referred to as an "Analog Switch") Model: ADG408BRZ Package Type: SOIC (Small Outline Integrated Circuit) Package Size: 16-Pin SOIC Function: The ADG408BRZ is a quad, 2-channel multiplexer with an integrated analog switch. It offers low ON resistance and is used for switching analog signals between different sources.Pin Function Specifications (16-Pin SOIC Package)
Pin Number Pin Name Pin Function Description 1 VSS Ground pin (Negative Supply Pin). Connect to system ground. 2 S1A Source pin for channel 1. Input/Output for analog signal. 3 S1B Source pin for channel 1. Input/Output for analog signal. 4 S2A Source pin for channel 2. Input/Output for analog signal. 5 S2B Source pin for channel 2. Input/Output for analog signal. 6 S3A Source pin for channel 3. Input/Output for analog signal. 7 S3B Source pin for channel 3. Input/Output for analog signal. 8 S4A Source pin for channel 4. Input/Output for analog signal. 9 S4B Source pin for channel 4. Input/Output for analog signal. 10 VDD Positive supply pin (Typically +5V or +12V depending on application). 11 IN1 Control logic input for channel 1. Determines switching state. 12 IN2 Control logic input for channel 2. Determines switching state. 13 IN3 Control logic input for channel 3. Determines switching state. 14 IN4 Control logic input for channel 4. Determines switching state. 15 COM1 Common output/input for channel 1. Analog signal path. 16 COM2 Common output/input for channel 2. Analog signal path.Pin Usage Explanation
VSS (Pin 1) and VDD (Pin 10) are the power supply pins for the device. SxA/SxB (Pins 2-9) are the source pins for each of the four channels. These pins can either accept analog input signals or provide analog output depending on the device's switching configuration. INx (Pins 11-14) are control input pins used to select which channel is active (which source is connected to the common pin). COMx (Pins 15-16) are the common output or input pins for the corresponding channel.Circuit Principle
The ADG408BRZ functions as a multiplexer, where control signals on the INx pins select which analog signal (from the SxA/SxB pins) gets connected to the COMx pin. The logic on the control pins (INx) determines the ON/OFF state of the individual channels, allowing you to route the analog signal from a source pin to the common pin.
20 Common FAQs
Q: What is the main function of the ADG408BRZ? A: The ADG408BRZ is a quad analog multiplexer with integrated switches used to route analog signals between various sources and a common output pin.
Q: What is the package type of the ADG408BRZ? A: The ADG408BRZ comes in a 16-pin SOIC package.
Q: How many channels does the ADG408BRZ have? A: The ADG408BRZ has four independent channels.
Q: What are the power supply pins for the ADG408BRZ? A: The power supply pins are VSS (Pin 1) for ground and VDD (Pin 10) for the positive supply voltage.
Q: Can the ADG408BRZ switch digital signals? A: No, the ADG408BRZ is designed to switch analog signals only.
Q: What is the voltage range for the VDD pin? A: The VDD pin typically operates between 5V and 12V, depending on the application.
Q: How does the control logic work for the ADG408BRZ? A: The control logic inputs (IN1 to IN4) determine which source (SxA/SxB) is connected to the common output (COMx).
Q: Can the ADG408BRZ be used in high-frequency applications? A: Yes, the ADG408BRZ is suitable for high-frequency analog signals, with a low ON resistance to minimize signal distortion.
Q: What is the ON resistance for the ADG408BRZ? A: The ON resistance typically ranges from 10 to 30 ohms depending on the voltage supply and conditions.
Q: What is the maximum current rating for the ADG408BRZ? A: The ADG408BRZ can handle a maximum current of 30mA per channel.
Q: Does the ADG408BRZ have any protection for high-voltage signals? A: The device is not specifically rated for high-voltage signals. It is recommended to operate within the device’s voltage and current limits to avoid damage.
Q: How do you select which source pin connects to the common pin? A: The selection is done by applying control signals to the INx pins. These inputs control the switching state of each channel.
Q: What happens if there is no voltage applied to the control inputs (INx)? A: If no voltage is applied, the default state of the multiplexer may be undetermined. It’s important to drive the INx pins with a valid logic signal.
Q: Can I use the ADG408BRZ to switch both analog and digital signals? A: No, the ADG408BRZ is specifically designed for analog signal routing and should not be used for digital signals.
Q: Is there a minimum voltage required for the INx control inputs? A: Yes, the INx control pins typically require a minimum logic high voltage of 2V for proper switching.
Q: How should the unused channels be connected? A: Unused channels should be left unconnected or properly grounded to prevent floating inputs.
Q: What is the switching speed of the ADG408BRZ? A: The switching speed of the ADG408BRZ is typically on the order of nanoseconds, suitable for high-speed applications.
Q: Can the ADG408BRZ be used in audio applications? A: Yes, the ADG408BRZ is commonly used in audio signal routing, where it can switch audio signals between different sources.
Q: What is the input voltage range for the ADG408BRZ? A: The input voltage range is typically from 0V to the supply voltage (VDD) minus 1V for proper operation.
Q: Can the ADG408BRZ work with both single-ended and differential signals? A: Yes, it can switch both single-ended and differential signals, making it versatile for various signal types.
This comprehensive explanation and FAQ list should cover all essential aspects of the ADG408BRZ multiplexer.
