ADUM1250ARZ Detailed explanation of pin function specifications and circuit principle instructions
The "ADUM1250ARZ" is a product manufactured by Analog Devices. It is an isolated I/O module , more specifically an isolated digital isolator. This part is used for electrical isolation in digital circuits to protect sensitive components from high voltages or transients.
Key Specifications:
Package Type: The ADUM1250ARZ typically comes in a 16-Lead SOIC (Small Outline Integrated Circuit) package. Pins: It has 16 pins (which I will describe in detail below), and it is designed for high-speed digital communication with isolation between signals.Pin Function Table for ADUM1250ARZ
Pin Number Pin Name Pin Function Description 1 VDD1 Positive supply voltage for the input side of the isolator. (3.3V to 5.5V) 2 GND1 Ground pin for the input side of the isolator. 3 IN1+ Input positive signal for data transmission from the input side. 4 IN1- Input negative signal for data transmission from the input side. 5 VDD2 Positive supply voltage for the output side of the isolator. (3.3V to 5.5V) 6 GND2 Ground pin for the output side of the isolator. 7 OUT1+ Output positive signal for data transmission to the output side. 8 OUT1- Output negative signal for data transmission to the output side. 9 VDD1 Another VDD pin for input side power (for dual supply configuration). 10 GND1 Another ground pin for input side power. 11 IN2+ Input positive signal for the second channel. 12 IN2- Input negative signal for the second channel. 13 VDD2 Another VDD pin for output side power (for dual supply configuration). 14 GND2 Another ground pin for output side power. 15 OUT2+ Output positive signal for the second channel. 16 OUT2- Output negative signal for the second channel.Circuit Principle and Function Description:
The ADUM1250ARZ is based on Analog Devices' iCoupler® technology, which uses micro-transformers to provide galvanic isolation between digital circuits, thereby protecting circuits from high-voltage surges or noise. It operates in differential mode, with the input and output signals each being transmitted with positive and negative signals. The device uses two channels, offering high data rate communication and reliable isolation.
VDD1 and VDD2: These are the supply voltage pins for the input and output sides, respectively. These should be connected to a regulated power source to provide proper operation. IN1+ / IN1- and IN2+ / IN2-: These are the differential input signal pins. The input signals are differential, meaning that the signal is transmitted in both positive and negative forms. OUT1+ / OUT1- and OUT2+ / OUT2-: These are the differential output signal pins. After processing the input signal, the device transmits the output signal in differential mode as well.20 Common FAQs
1. What is the voltage range for the ADUM1250ARZ? The ADUM1250ARZ operates with a supply voltage range of 3.3V to 5.5V. 2. What type of isolation does the ADUM1250ARZ provide? The ADUM1250ARZ provides galvanic isolation, meaning that it electrically isolates the input and output sides to protect circuits from high voltages. 3. How many pins does the ADUM1250ARZ have? The ADUM1250ARZ has a total of 16 pins. 4. Can the ADUM1250ARZ handle high-speed data transmission? Yes, it supports high-speed data transmission, with speeds up to 25 Mbps. 5. How do I connect the ADUM1250ARZ to a microcontroller? Connect the input side (pins 1-4) to the microcontroller's signal lines and the output side (pins 5-8) to the receiving circuit. 6. What is the isolation voltage of the ADUM1250ARZ? The isolation voltage is typically 2500 VRMS (Root Mean Square) for 1 minute. 7. Does the ADUM1250ARZ have thermal protection? Yes, the ADUM1250ARZ has thermal shutdown and overcurrent protection mechanisms. 8. Can the ADUM1250ARZ be used in automotive applications? Yes, it can be used in automotive circuits for signal isolation, as long as the voltage ratings are respected. 9. Is the ADUM1250ARZ suitable for industrial automation applications? Yes, the ADUM1250ARZ is ideal for isolating signals in industrial automation systems. 10. What is the typical current consumption of the ADUM1250ARZ? The typical current consumption is approximately 2 mA per side. 11. What is the maximum data rate of the ADUM1250ARZ? The ADUM1250ARZ supports a maximum data rate of 25 Mbps. 12. Can the ADUM1250ARZ be used in noisy environments? Yes, due to its isolation, the ADUM1250ARZ is designed to reject noise and provide reliable data transmission. 13. What is the function of the GND pins on the ADUM1250ARZ? The GND pins (pins 2, 6, 10, and 14) provide the reference ground for the respective sides of the isolator. 14. Does the ADUM1250ARZ have any built-in protections? Yes, it has built-in protection against overcurrent, thermal overload, and electrostatic discharge (ESD). 15. How do I configure the ADUM1250ARZ for low-power applications? To reduce power consumption, use lower supply voltages (within the operational range) and optimize the data rate. 16. What is the packaging type of the ADUM1250ARZ? The ADUM1250ARZ is available in a 16-lead SOIC package. 17. What is the maximum operating temperature of the ADUM1250ARZ? The maximum operating temperature is +125°C. 18. How can I test the isolation of the ADUM1250ARZ? The isolation can be tested by applying a high-voltage test across the input and output sides, ensuring no leakage current. 19. Can I use the ADUM1250ARZ in power supply circuits? The ADUM1250ARZ is not directly used for power supply isolation but for signal isolation, ensuring protection against power-related surges. 20. How do I ensure proper grounding of the ADUM1250ARZ in my circuit? Ensure that the GND pins are properly connected to the ground of their respective sides and that there is no connection between the grounds of the input and output sides.This table and FAQ provide a detailed overview of the ADUM1250ARZ's pin functions, specifications, and common inquiries to guide its proper use in circuits.