Method and apparatus for high-speed bi-CMOS differential amplifi

Details Method and apparatus for high-speed bi-CMOS differential amplifi Method and apparatus for high-speed bi-CMOS differential amplifi

1990-12-20

1991-11-12

Mottola, Steven

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072961, H03F 345

Patent

active

050650556

ABSTRACT:
The present invention provides apparatus and methods to achieve a high speed bi-CMOS differential amplifier with controlled output voltage swing for use in amplifying low level complementary logic signals. The differential amplifier is comprised of a load current controller and a sense amplifier. The load current controller compares a desired reference voltage to the voltage drop across a simulated load. The load current controller then produces therefrom a bias voltage corresponding to the current which results in a voltage drop equal to the reference voltage. The bias voltage, when applied to the sense amplifier, limits the output of the sense amplifier to a controlled voltage swing of magnitude equal to the reference voltage.

REFERENCES:
patent: 4939693 (1990-07-01), Tran

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