Current offset sense amplifier of a modulated current or current

Details Current offset sense amplifier of a modulated current or current Current offset sense amplifier of a modulated current or current

1992-05-04

1994-07-05

LaRoche, Eugene R.

Static information storage and retrieval

Read/write circuit

For complementary information

365203, 365205, 365210, G11C 700

Patent

active

053273796

ABSTRACT:
A modulated-current offset-type or currentunbalance, offset-type sense amplifier for reading programmable memory cells employs loads identical to each other and a differential input pair of transistors of the differential amplifier are "cross-coupled" with said identical loads to realize a latch structure for storing an extracted data. The circuit utilizes three timing signals for sequentially modifying the configuration of the circuit and defining the following phases: start of a new reading cycle, pre-charging of capacitances associated with bit lines, and equalization of output nodes and line potentials, discrimination phase, reading and storing of the extracted data. Different embodiments employing different reference systems are described.

REFERENCES:
patent: 4694427 (1987-09-01), Miyamoto et al.
patent: 5138579 (1992-08-01), Tatsumi et al.

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