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说明
- Low VOL(MAX) for Greater I2C Device Compatibility
- Side 1: 0.69V
- Side 2: 0.4V
- 142μA (typ) per Channel at 400kHz
- 1.71V to 5.5V for Both Sides
- Initial Side 2 Connection Occurs at Bus Idle or Stop States to Prevent Data Corruption
- Supports Clock Stretching and Multiple Controllers Across Isolation Barrier
- Side 1: 5mA
- Side 2: 50mA
- Robust Galvanic Isolation of Digital Signals
- Continuously Withstands (VIOWM)
- 8-Narrow SOIC: 445VRMS
- Withstands ±10kV Surge per IEC 61000-4-5
- Creepage and Clearance
- 8-Narrow SOIC: 4mm
- Continuously Withstands (VIOWM)
- IEC60747-17 (Pending)
- Reinforced VIORM Narrow SOIC: 630VPEAK
- UL 1577 (Pending)
- 8-Narrow SOIC: 3000VRMS for 1min
- IEC/EN/CSA 62368-1 (Pending)
- IEC/EN/CSA 61010-1 (Pending
- CAN/CSA-C22.2 No. 14-18 (Pending)
特性
The ADuM1252 offers two bidirectional, open-drainchannels for applications, such as I2C, that require datato be transmitted in both directions on the same line. Toprevent latch-up action, side 1 outputs comprise specialbuffers that regulate the logic-low voltage at 0.64V, andthe input logic-low threshold is at least 50mV lower thanthe output logic-low voltage. Side 2 featuresconventional buffers that do not regulate logic-low outputvoltage.
The ADuM1252 features independent 1.71V to 5.5Vsupplies on both side 1 and side 2 of the isolator. Thedevice operates up to 2MHz. The ultra-low standbycurrent of 21μA per side is ideal for battery-operatedsystems.
The ADuM1252 provides a disturbance-free busconnection for hot-plug connections on side 2 by firstprecharging the bus pins and then monitoring the busstate for either an idle bus or detection of a I2C stopcondition before connecting side 1 and side 2.
The ADuM1252 is available in an 8-pin narrow SOICpackage. The device is rated for operation at ambienttemperatures of -40°C to +125°C.
APPLICATIONS
- Isolated I2C/SMBus Interface
- Battery Management Systems
- Power Over Ethernet (PoE)
- Motor Control Systems
参数
类型 | 描述 |
汽车 | ADAS与安全 |
通信 | 5G毫米波无线通信 |
数据中心 | AI加速器 |
消费电子 | 可听戴设备和可穿戴设备 |
电能 | 储能和电源转换 |
医疗健康 | 糖尿病技术 |
工业自动化技术 (IAT) | 状态监控的振动检测 |
仪器仪表和测量 | 自动化测试设备 |
智能建筑 | 楼宇自动化系统 |
