Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1995-05-01
1996-08-13
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 52, 327 57, G01R 1900
Patent
active
055460267
ABSTRACT:
A sense amplifier circuit includes a voltage developing stage which receives first and second data inputs, din1 and din2, and generates a differential voltage, in response to feedback signals received from a first and second data outputs, dout1 and dour2, of the sense amplifier circuit, which is 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 control signal .PHI..sub.2 ', complementary latched data outputs from the first and second data outputs, dout1 and dout2, generated by the voltage developing stage; and a voltage equalization stage which equalizes, in response to a control signal .PHI..sub.0 ', voltages on data lines respectively connected to the first and second data outputs, dout1 and dout2. In addition, the voltage equalization stage is used to initiate the voltage developing stage. Timing of the control signals, .PHI..sub.0 ' and .PHI..sub.2 ', is such that the control signal .PHI..sub.2 ' is activated after a finite period following the deactivation of the second control signal .PHI..sub.0 '. To minimize power consumption of the sense amplifier circuit, the 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.
REFERENCES:
patent: 4124808 (1978-11-01), Shieu et al.
patent: 4511810 (1985-04-01), Yukawa
patent: 4697112 (1987-09-01), Ohtani et al.
patent: 4871933 (1989-10-01), Galbraith
patent: 5162681 (1992-11-01), Lee
patent: 5231318 (1993-07-01), Reddy
Doyle Bruce
Lin Jyh-fong
Callahan Timothy P.
Cirrus Logic Inc.
Nguyen Frank D.
Wells Kenneth B.
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