Static information storage and retrieval – Read/write circuit – Differential sensing
Patent
1997-11-18
1998-10-06
Yoo, Do Hyun
Static information storage and retrieval
Read/write circuit
Differential sensing
36518907, 36518909, 326 66, G11C 700
Patent
active
058187740
ABSTRACT:
The differential output signals from the sense amplifiers of a dynamic random access memory unit are applied to apparatus which converts these output signals to a non-differential current mode signal. The non-differential current mode signal is applied to a data line. The output signal from the data line is converted to a small swing voltage signal. The small swing voltage signal is compared with a reference voltage level thereby generating a full swing voltage output signal. The reference voltage level is generated by a sample and hold circuit which samples the small swing voltage level when the differential signals from the sensors are equal. The sampled level is stored for comparison with the small swing voltage level resulting from the sensing of the stored voltage level. The full swing voltage output signal is suitable for use with CMOS circuits associated with the dynamic random access memory unit.
REFERENCES:
patent: 4797583 (1989-01-01), Ueno et al.
patent: 5455797 (1995-10-01), Etoh et al.
Brady III W. James
Courtney Mark
Donaldson Richard L.
Texas Instruments Incorporated
Yoo Do Hyun
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