Symmetrical, Active-Clamped Driver With Power Supply
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-27
A high speed, active-clamped, off-chip driver function is produced whose rise and fall delays are virtually power supply insensitive. Since the design is for monolithic integration, it is inherently temperature stable due to the tracking of on-chip components. By proper choice of resistor values in a given technology, for known termination conditions, the rise and fall delays through the driver can be made equal. This, coupled with the power supply insensitivity of the design, allows a driver to be implemented with symmetrical rise and fall delays that do not change with temperature or power supply. The figure shows a schematic of the driver.