Overview
The ADUM1250WSRZ is a hot swappable, dual-channel digital isolator produced by Analog Devices Inc. This component is designed to provide non-latching, bidirectional communication channels that are fully compatible with I2C interfaces. It is particularly suited for applications requiring isolation between two I2C buses, ensuring reliable and glitch-free data transmission even during hot swap operations.
The ADUM1250WSRZ utilizes Analog Devices' iCoupler technology, which is a magnetic isolation method that offers high performance, small size, and low power consumption. This isolator supports operation over a wide supply voltage range of 3.0 V to 5.5 V, making it versatile for various system designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Maximum Frequency | - | - | 1000 kHz | - | - |
| Output Fall Time (5 V Operation) | 13 ns | 26 ns | 120 ns | - | 4.5 V ≤ VDD1, VDD2 ≤ 5.5 V, CL1 = 40 pF, R1 = 1.6 kΩ, CL2 = 400 pF, R2 = 180 Ω |
| Output Fall Time (3 V Operation) | 32 ns | 52 ns | 120 ns | - | 3.0 V ≤ VDD1, VDD2 ≤ 3.6 V, CL1 = 40 pF, R1 = 1.0 kΩ, CL2 = 400 pF, R2 = 120 Ω |
| Supply Voltages | -0.5 V | - | +7.0 V | - | VDD1 to GND1, VDD2 to GND2 |
| Ambient Operating Temperature | -40°C | - | +125°C | - | For W Grade |
| Package Type | - | - | - | - | 8-Lead SOIC_N R-8 |
Key Features
- Bidirectional I2C Communication: Supports non-latching, bidirectional communication channels compatible with I2C interfaces, eliminating the need for separate transmit and receive signals.
- Hot Swap Capability: Includes hot swap circuitry to prevent data glitches when an unpowered card is inserted onto an active bus.
- Wide Supply Voltage Range: Operates with supply voltages from 3.0 V to 5.5 V, making it versatile for various system designs.
- High Speed Operation: Supports up to 1000 kHz operation frequency.
- Isolation Technology: Utilizes iCoupler technology for magnetic isolation, offering high performance, small size, and low power consumption.
- High Isolation Voltage: Provides reinforced surge isolation voltage up to 10 kV and highest allowable overvoltage transient up to 4000 V peak.
Applications
- Industrial Automation: Suitable for industrial control systems where isolation between different voltage domains is necessary.
- Medical Devices: Used in medical equipment to ensure patient safety by isolating high-voltage and low-voltage circuits.
- Automotive Systems: Applied in automotive electronics for isolating different subsystems, such as CAN bus and other communication interfaces.
- Consumer Electronics: Found in various consumer electronics where I2C communication and isolation are required.
- Data Acquisition Systems: Used to isolate data acquisition modules from the main system to prevent noise and interference.
Q & A
- What is the primary function of the ADUM1250WSRZ?
The ADUM1250WSRZ is a hot swappable, dual-channel digital isolator designed to provide non-latching, bidirectional communication channels compatible with I2C interfaces.
- What is the operating supply voltage range of the ADUM1250WSRZ?
The ADUM1250WSRZ operates with supply voltages from 3.0 V to 5.5 V.
- What is the maximum frequency supported by the ADUM1250WSRZ?
The ADUM1250WSRZ supports up to 1000 kHz operation frequency.
- What type of isolation technology does the ADUM1250WSRZ use?
The ADUM1250WSRZ utilizes iCoupler technology for magnetic isolation.
- What is the significance of hot swap capability in the ADUM1250WSRZ?
The hot swap capability prevents data glitches when an unpowered card is inserted onto an active bus.
- What are the typical applications of the ADUM1250WSRZ?
The ADUM1250WSRZ is used in industrial automation, medical devices, automotive systems, consumer electronics, and data acquisition systems.
- What is the package type of the ADUM1250WSRZ?
The ADUM1250WSRZ comes in an 8-Lead SOIC_N R-8 package.
- What is the ambient operating temperature range for the W Grade of the ADUM1250WSRZ?
The ambient operating temperature range for the W Grade is -40°C to +125°C.
- What is the surge isolation voltage rating of the ADUM1250WSRZ?
The ADUM1250WSRZ has a reinforced surge isolation voltage rating up to 10 kV.
- How does the ADUM1250WSRZ ensure reliable I2C communication?
The ADUM1250WSRZ ensures reliable I2C communication by providing non-latching, bidirectional channels and preventing data glitches during hot swap operations.
