High speed current limiting sense amplifier

Details High speed current limiting sense amplifier High speed current limiting sense amplifier

1988-06-13

1989-07-04

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including plural stages cascaded

330288, 307530, H03F 368

Patent

active

048454427

ABSTRACT:
According to the teachings of this invention, a novel sense amplifier is provided which includes a current steering transistor having its emitter connected to the collector of a current mirror transistor, its collector connected to the base of an output transistor, and its base driven by the input signal. With a low input signal, the emitter of the current steering transistor is pulled low, thereby pulling the base of the output transistor low. Conversely, when the input signal is high, and the current steering transistor ceases to operate in the active saturation mode and begins to operate in the inverse active saturation mode, thereby providing current from its base to its collector in order to turn on the output transistor.

REFERENCES:
patent: 4215282 (1980-07-01), Brown et al.
patent: 4716547 (1987-12-01), Baskett et al.
patent: 4727269 (1988-02-01), Luich

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