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ADUM1251ARZ
+BOMDGTL ISOLTR 2.5KV 2CH I2C 8-SOIC
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メーカーテキサス・インスツルメンツ
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メーカー品番 #ADUM1251ARZ
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データシート ADUM1251ARZ DataSheet
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在庫状況19906
365 日間品質保証
7*24 日間の品質保証
90-時間単位のサービス保証
1日間のアフターサービス保証
仕様
| 属性 | 値 |
| Series | iCoupler® |
| PartStatus | Active |
| Technology | Magnetic Coupling |
| Type | I2C |
| IsolatedPower | No |
| NumberofChannels | 2 |
| Inputs-Side1/Side2 | 2/1 |
| ChannelType | Bidirectional, Unidirectional |
| Voltage-Isolation | 2500Vrms |
| CommonModeTransientImmunity(Min) | 25kV/µs |
| DataRate | 1Mbps |
| PulseWidthDistortion(Max) | 145ns, 85ns |
| Voltage-Supply | 3V ~ 5.5V |
| OperatingTemperature | -40°C ~ 105°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154", 3.90mm Width) |
| SupplierDevicePackage | 8-SOIC |
| BaseProductNumber | ADUM1251 |
概要
Description
Key features include:
1. Isolation: Provides up to 2500 Vrms isolation voltage, which helps in protecting sensitive components and circuits from high voltage surges or noise.
2. Data Rate: Supports data rates up to 2 Mbps, making it suitable for high-speed communication applications.
3. Dual-Channel: Offers dual-channel bidirectional communication, allowing for flexible design implementations.
4. Low Power Consumption: Operates with low power, which is beneficial for battery-powered applications.
5. Compact Package: Available in a small SOIC (Small Outline Integrated Circuit) package, which is ideal for space-constrained designs.
The ADUM1251ARZ is typically used in applications such as industrial automation, power supply isolation, and communication interfaces where reliable digital signal isolation is crucial.
Equivalent
1. ISO1541 from Texas Instruments
2. SI8601 from Silicon Labs
3. MAX14931 from Maxim Integrated
These alternatives serve similar functions, providing bidirectional I2C isolation. Ensure to check the datasheets for pin compatibility and performance specifications when considering replacements.
Features
1. Isolation Technology: Utilizes iCoupler technology for digital isolation, offering up to 5 kV RMS isolation.
2. Bidirectional Communication: Supports bidirectional data transfer, making it suitable for isolating I²C buses.
3. Data Rate: Operates at data rates up to 1 MHz, compatible with standard-mode and fast-mode I²C devices.
4. Supply Voltage: Supports a wide supply voltage range from 3.0 V to 5.5 V on both sides of the isolator.
5. Low Power Consumption: Features low power operation with quiescent current typically around 1 mA.
6. Compact Package: Available in a 16-lead SOIC package, providing a compact solution for board design.
7. Safety Certifications: Meets safety and regulatory standards for reinforced insulation.
These features make the ADUM1251ARZ suitable for applications requiring robust isolation between different voltage domains in industrial, consumer, and automotive environments.
Pinout
The functions of the pins are as follows:
1. VDD1 (Pin 1): Supply voltage for Side 1.
2. SDA1 (Pin 2): Serial data for Side 1 (I²C bus).
3. SCL1 (Pin 3): Serial clock for Side 1 (I²C bus).
4. GND1 (Pin 4): Ground for Side 1.
5. GND2 (Pin 5): Ground for Side 2.
6. SDA2 (Pin 6): Serial data for Side 2 (I²C bus).
7. SCL2 (Pin 7): Serial clock for Side 2 (I²C bus).
8. VDD2 (Pin 8): Supply voltage for Side 2.
The ADUM1251ARZ is used to provide galvanic isolation between two I²C buses, protecting each side from high-voltage differences, and ensuring data integrity across the isolation barrier.
Manufacturer
Application
1. Industrial Automation: Ensuring safe communication between microcontrollers and sensors across isolated domains.
2. Power Electronics: Isolation in power supply feedback loops to manage and monitor power systems.
3. Medical Devices: Providing isolation in medical equipment to protect patient and device safety.
4. Consumer Electronics: Used in devices requiring isolated communication to prevent interference and enhance device reliability.
5. Automotive Systems: Facilitating isolated communication in automotive electronics to ensure signal integrity and system protection.
These applications benefit from the device's ability to provide bidirectional communication and high data rates while maintaining electrical isolation.