Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1996-07-01
1998-05-05
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327309, G01R 1900
Patent
active
057480150
ABSTRACT:
An improved single ended dynamic sense amplifier circuit for sensing the state of a bitline in a read only memory is disclosed which includes a threshold control circuit coupled to a noise margin circuit and a discharge circuit. A sense node couples the discharge circuit to a precharge circuit and an output circuit. The threshold control circuit maintains a bias on the discharge circuit such that during the precharge phase of operation, the discharge circuit is shut off and then conditionally turned off and on. The inclusion of the threshold control circuit in the disclosed single ended dynamic sense amplifier circuit provides for fully functional operation at supply voltages of close to 1.0 volt.
REFERENCES:
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patent: 5295104 (1994-03-01), McClure
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patent: 5477484 (1995-12-01), Nakashima
patent: 5495191 (1996-02-01), Lev et al.
patent: 5619149 (1997-04-01), Lev et al.
A High-Speed Clamped Bit-Line Current-Mode Sense Amplifier, by Travis N. Blalock et al., IEEE Journal of Solid State Circuits, vol. 26., No. 4, Apr. 1991, pp. 542-548.
A 7-ns 140mW 1-Mb CMOS SRAM with Current Sense Amplifier, by Katsuro Sasaki et al., IEEE Journal of Solid State Circuits, vol. 27, No. 11, Nov. 1992, pp. 1511-1518.
Current-Mode Techniques for High-Speed VLSI Circuits with Application to Current Sense Amplifier for CMOS SRAM's, by Evert Seevinck et al., IEEE Journal of Solid State Circuits, vol. 26, No. 4, Apr. 1991, pp. 525-536.
McKay Philip J.
Sun Microsystems Inc.
Tran Toan
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