Townsend and Townsend and Crew LLP
Leakage compensation in dynamic flip-flop
A dynamic flip-flop includes a leakage compensation circuit enabling operation over a wide range of frequencies. Nodes of the dynamic flip-flop store the flip-flop's state. The leakage compensation circuit drains leakage currents from these nodes to prevent the node voltage from rising and triggering an erroneous state change when a data signal changes in the middle of the clock cycle. The leakage compensation circuit associated with a node is activated when the node is set to a low logic level voltage. The leakage compensation circuit is adapted to draw a current from a node that compensates for the leakage current supplied to the node. At the least, this current draw is sufficient to prevent the voltage at the node from rising above a state change threshold voltage during the time period between refresh operations.
Altera Corporation
H G G
H03K G11C G11C
inventional inventional inventional
Toan Thanh Thungoc M.
Nguyen Tran