Constant current biased common gate differential sense amplifier

Details Constant current biased common gate differential sense amplifier Constant current biased common gate differential sense amplifier

1987-10-13

1989-12-19

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307362, 365190, 365208, A03K 524, G11C 706

Patent

active

048885037

ABSTRACT:
A sense amplifier circuit for sensing signals present on data lines from a memory. The differential inputs are converted to single-ended outputs by two pairs of common gate differential input transistors and a pair of active loads. The single-ended outputs are amplified by a pair of drivers and the amplified outputs are presented as balanced differential outputs of the sense amplifier. A pair of current sourcing transistors provide DC biasing current to each of the pair of input transistors, wherein the current sourcing transistors are biased to operate in a saturation region, such that voltage changes on the data lines do not cause a change in the current source to prevent signal loss to the input transistors.

REFERENCES:
patent: 4479202 (1984-10-01), Uchida
patent: 4658160 (1987-04-01), Young
patent: 4713797 (1987-12-01), Morton et al.

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