Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Patent
1998-07-21
2000-07-11
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Particular stable state circuit
327 74, H03K 3037
Patent
active
060878738
ABSTRACT:
A switched capacitor differential comparator (10) for receiving input signals which includes hysteresis circuitry (40, and 42) and a switch (43) responsive to timed clocking pulses occurring during alternating reset and comparison periods for application of a hysteresis current during a reset period of the differential comparator which current is injected into an applicable one of a pair of load devices (22, 24) to produce a hysteresis voltage offset at a selected one of the differential inputs (30, 32) which is stored during the reset period but removed during the next comparison period so that the hysteresis voltage is not canceled but remains superimposed on the stored input signals during the next comparison period to introduce hysteresis to influence the current output decision of the comparator circuit based on the decision of the comparator resulting from the previous comparison period.
REFERENCES:
patent: 4394587 (1983-07-01), McKenzie et al.
patent: 5528185 (1996-06-01), Lewicki et al.
patent: 5656957 (1997-08-01), Marlow et al.
Martinez Anthony M.
Motorola Inc.
Tran Toan
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