| 摘要 |
<p>A method and apparatus for generating two control signals (LPB, LNB) to activate local sense amplifier driver transistors (140, 142) is described. The rise and fall times of these signals as well as their levels keep the sense speed and peak currents as constant as possible over the specified voltage and temperature ranges. This is achieved preferably by using current sources (208, 222) based on resistors (507, 512; 500, 502) to control the rise/fall times and current mirrors or modeling circuits (212,230) to set the voltage levels. Preferably circuitry (230, 528; 212, 490) is provided to determine when LNB and LPB reach intermediate and full voltage levels. The timing is set to spread out the current peak into three separate smaller peaks. <IMAGE></p> |
