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Am79R70是Legerity公司生产的模拟用户线接口电路 (SLIC)芯片 ,它能提供连续可调的电流馈电 ,可在其控制端C1、C2和C3输入不同的逻辑电平以控制芯片的工作方式。文章介绍了Am79R70的性能特点及其在用户接口单元 (ALU)中的应用。
The Am79R70 is an analog subscriber line interface circuit (SLIC) chip from Legerity that provides a continuously adjustable current feed. Different logic levels can be entered at its control terminals C1, C2 and C3 to control the operation of the chip. The article describes the performance characteristics of the Am79R70 and its application in the user interface unit (ALU).