Analog Devices Inc. ADuM124x 双通道数字隔离器
亚德诺半导体 ADuM124x 双通道数字隔离器是基于 亚德诺半导体 iCoupler®技术的微功耗数字隔离器。这些隔离器件将高速 CMOS 与单芯片空芯变压器技术融为一体,具有优于光耦合器件等替代器件的出色性能特征,而所需功率低于现有的任何隔离产品。该系列双通道、3.75kVrms 数字隔离器件的工作电源电压低至 2.25V,数据传输率小于 20kbps 时消耗的最小典型电流低于 6A 每通道,在数据速率相当(最高 2Mbps)的情况下,其功耗仅相当于同类隔离器的一小部分。此外,所有型号均提供低脉冲宽度失真 (<8ns)和输入毛刺滤波器以保护设备不受外来噪声的干扰。所有型号均可在两侧采用独立电源电压(介于 2.25V 和 3.6V)的情况下工作,与低压系统兼容,并且能够跨越隔离栅实现电压转换功能。另外,在没有输入电源的情况下,所有型号的输出均为预先确定的默认输出逻辑状态:ADuM1240 和 ADuM1241 默认高电平输出,ADuM1245 和 ADuM1246 默认低电平输出。
特性
- Ultralow power operation
- 3.3V operation
- 16μA per channel maximum quiescent current, refresh enabled
- 0.3μA per channel typical quiescent current, refresh disabled
- 148μA/Mbps per channel typical dynamic current
- 2.5V operation
- 8μA per channel maximum quiescent current, refresh enabled
- 0.1μA per channel typical quiescent current, refresh disabled
- 116μA/Mbps per channel typical dynamic current
- Small, 20-lead SSOP package
- Bidirectional communication
- Up to 2Mbps data rate (NRZ)
- High temperature operation: 125°C
- High common-mode transient immunity: >25kV/μs
- Safety and Regulatory Approvals
- UL 1577 component recognition program (pending) - 3750 V rms for 1 minute per UL 1577
- CSA Component Acceptance Notice 5A (pending)
- VDE certificate of conformity (pending) - DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 VIORM = 849 V peak
应用
- General-purpose, low power, multichannel isolation
- 1MHz low power SPI
- 4mA to 20mA loop process control
视频
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