Sense amplifying latch with low swing feedback

Details Sense amplifying latch with low swing feedback Sense amplifying latch with low swing feedback

2006-01-17

2006-01-17

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S208000, C327S218000

Reexamination Certificate

active

06987412

ABSTRACT:
A system is presented for latching and amplifying a capacitively coupled inter-chip communication signal that operates by receiving an input signal on a capacitive receiver pad and feeding the input signal through an inverter to produce an output signal. The output signal is fed back through a weakened inverter to produce a feedback signal that is fed into an input of the inverter to form a latch for the input signal. The weakened inverter is biased to produce a feedback signal that swings between a high bias voltage, VH, and a low bias voltage, VL. VHis set slightly higher than the switching threshold of the inverter, and VLis set slightly lower than the switching threshold. This feedback signal causes the input signal to reside within a narrow voltage range near the switching threshold of the inverter, thereby making the inverter sensitive to small transitions in the input signal.

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Publication: “Enhanced Voltage-Regulated Static Keeper Techniques for Reduced Standby Power”, International Business Machines Corporation, Research Disclosure, Kenneth Mason Publications, Hampshire, GB, vol. 426 No. 75, Oct. 1999, XP007124932, ISSN: 0374-4353, the whole document.

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