Low Power CMOS Off-Chip Drivers with Slew-rate Difference

-- This paper proposes an approach to reduce the short circuit current of CMOS off-chip drivers by individually controlling the input slew rates 10 the P and N channel transistors that drive the outputpad. The slew rates are deliberately designed such that the N(P)transistor at the output stage will be turned (iff faster than the P(N)transistor is turned onfiir low-to-high(highto-low) output transitions. It is demonstrated experimentally by HSPICE simulution that the off-chip driver designed by the proposed approach not only produces viable power-delay products. but also results in smaller noise

• Type: Conference
• Year: 1999
• Where: ASPDAC
• Authors: Rung-Bin Lin, Jinq-Chang Chen
• Keywords: ASPDAC 1999, Hardware, Input Slew Rates, Off-chip Driver, Slew Rates