摆率控制输出缓冲器的设计

Proceedings Eleventh Annual IEEE International ASIC Conference (Cat. No.98TH8372) Pub Date : 1998-09-13 DOI:10.1109/ASIC.1998.722821

Fernando Quiles García, P. Coll., D. Anvergne

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引用次数: 16

摘要

由于IC工作条件的广泛范围，设计I/O驱动程序并不是一项微不足道的任务。必须避免由于过度驱动而产生的输出振铃以及由于输出驱动器同时切换而产生的功率噪声。提出了一种利用电容反馈控制输出摆幅的输出驱动器结构，降低了功率噪声。由此产生的驱动器的过渡时间在大范围的输出负载条件下是恒定的。介绍了一种采用0.8 /spl mu/m CMOS技术实现的驱动程序。

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Design of a slew rate controlled output buffer

Due to the wide range of IC operating conditions, designing I/O drivers does not constitute a trivial task. Output ringing due to over-drive as well as power noise due to simultaneous switching of output drivers must be avoided. A structure of an output driver is proposed that uses capacitance feedback to control the output slew, reducing the power noise. The transition time of the resulting driver is shown to be constant over a large range of output loading conditions. A description is given of a driver implemented in a 0.8 /spl mu/m CMOS technology.

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来源期刊

Proceedings Eleventh Annual IEEE International ASIC Conference (Cat. No.98TH8372)

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