학술논문

Output buffer with self-adjusting slew rate and on-chip compensation
Document Type
Conference
Source
Proceedings. 1998 IEEE Symposium on IC/Package Design Integration (Cat. No.98CB36211) IC/package design integration IC/Package Design Integration, 1998. Proceedings. 1998 IEEE Symposium on. :51-55 1998
Subject
Components, Circuits, Devices and Systems
Integrated circuit noise
Switching circuits
Working environment noise
Switches
Noise robustness
Temperature control
Voltage control
Temperature sensors
Stress
Analytical models
Language
Abstract
In this paper, two circuits are proposed to effectively control IC noise. The first circuit is a modified I/O circuit that monitors the local output switching condition, and intelligently adjusts its slew rate such that the I/O can switch as fast as it is allowed without jeopardizing noise performance. The second circuit is a PVT-compensation control circuit, which senses process, voltage, and temperature variations, and compensates the I/O circuit's current drive accordingly. This feature makes the I/O circuits more robust under a range of environmental stresses. From analyses and simulations, the proposed I/O and PVT-compensation control circuits demonstrate robustness in terms of IC noise control. They control IC noise to less than 10% variation between single and multiple output switchings as compared to a conventional I/O circuit with 56% variation.