| 摘要 |
A swing limiting circuit for limiting the voltage across the input of a BiCMOS sense amplifier includes first and second bipolar transistors each having their collectors coupled to a first supply potential and their emitters coupled to the respective bases of a pair of bipolar transistors forming the sense amplifier. First and second pass gate devices are utilized to couple the respected bases of the first and second transistors to the bit lines running through the memory so as to limit the voltage drop appearing across the bases of the first and second transistors. A pair of NMOS devices are configured as source followers in parallel with the bipolar transistors to keep the voltage at the bases of the differential pair from dropping below a predetermined level.
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