Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1995-03-01
1996-04-09
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 52, 327 54, G01R 1900
Patent
active
055065244
ABSTRACT:
A sense amplifier circuit includes a voltage developing stage which receives first and second data inputs, din1 and din2, and generates, in response to a first control signal .PHI..sub.1, a differential voltage indicative of a voltage difference between the first and second data inputs, din1 and din2; a full-swing locking stage which generates and latches, in response to a second control signal .PHI..sub.2, first and second latched data outputs, dout1 and dout2, from the differential voltage generated by the voltage developing stage; and a voltage equalization stage which equalizes, in response to a third control signal .PHI..sub.0, voltages on data lines respectively connected to the first and second data outputs, dout1 and dout2. Timing of the first, second and third control signals, .PHI..sub.1, .PHI..sub.2 and .PHI..sub.0, is such that the first control signal is activated after a finite period following the initial activation of the third control signal .PHI..sub.0, and the second control signal .PHI..sub.2 is activated after a finite period following the initial activation of the first control signal .PHI..sub.1. To minimize power consumption of the sense amplifier circuit, the first control signal .PHI..sub.1 is deactivated when the full-swing locking stage is in operation and the voltage developing stage is not needed, and the third control signal .PHI..sub.0 is deactivated when either the voltage developing or full-swing locking stage is in operation and the voltage equalization stage is not needed.
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Callahan Timothy P.
Wells Kenneth B.
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