Sense amplifier having a bias circuit with a reduced size

Details Sense amplifier having a bias circuit with a reduced size Sense amplifier having a bias circuit with a reduced size

1999-05-26

2000-09-19

Nguyen, Viet Q.

Static information storage and retrieval

Read/write circuit

Including reference or bias voltage generator

365210, 365208, 365227, 365226, 365205, G11C 700

Patent

active

061222046

ABSTRACT:
A sense amplifier places a low positive voltage, such as 0.1 to 0.3 volts, on a bit line instead of ground when a memory cell is read by utilizing a current source circuit to output a reference current that biases a Schottky diode. The current source circuit is implemented with a Schottky diode that utilizes the reverse-biased leakage current of the diode to form the reference current. The current source circuit can also be implemented with a current mirror circuit.

REFERENCES:
patent: 4200918 (1980-04-01), Glock et al.
patent: 4308595 (1981-12-01), Houghton
patent: 5764097 (1998-06-01), Whitfield
patent: 5822253 (1998-10-01), Lines
patent: 5822267 (1998-10-01), Watanabe et al.

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