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    • 9. 发明授权
    • Sense amplifier with individually optimized high and low power modes
    • 感应放大器,具有单独优化的高功率和低功耗模式
    • US5850365A
    • 1998-12-15
    • US772567
    • 1996-12-24
    • Dirk A. ReeseMyron W. WongJohn C. Costello
    • Dirk A. ReeseMyron W. WongJohn C. Costello
    • G11C7/06G11C7/02
    • G11C7/067
    • The present invention is a sense amplifier circuit for use with programmable logic devices that provides improved switching time by actively limiting the voltage swing on the bit line which it is sensing, rather than passively sensing the voltage, employs feedback circuits to further improve switching time and may be selectively operated in low power mode without significant reduction in switching speed. Voltage reference control circuitry, comprising variable current limiters controlled by the potential of a supply of reference potential, can be added to improve noise immunity. The circuitry of the supply of reference potential is designed so that its sensitivity to fabrication variations is substantially similar to that of the sense amplifier and so that it adjusts the reference potential accordingly.
    • 本发明是一种与可编程逻辑器件一起使用的读出放大器电路,通过主动地限制其正在感测的位线上的电压摆幅而不是被动地感测电压来提供改进的开关时间,采用反馈电路来进一步提高开关时间, 可以选择性地在低功率模式下操作而不显着降低开关速度。 可以添加包括由参考电位供应的电位控制的可变电流限制器的电压参​​考控制电路,以提高抗噪声性能。 设计参考电位的电路被设计成使得其对制造变化的敏感度基本上类似于读出放大器的灵敏度,并因此相应地调整参考电位。