High speed circuit with supporting auxiliary circuit

Details High speed circuit with supporting auxiliary circuit High speed circuit with supporting auxiliary circuit

1988-08-08

1989-12-05

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307262, 307353, 307491, 307269, G11C 2702, H03K 5159

Patent

active

048855456

ABSTRACT:
A sample-and-hold circuit for sampling a time-varying signal comprises a main sample-and-hold subcircuit extending between input and output terminals and an auxiliary sample-and-hold subcircuit extending between the input terminal and a portion of the main subcircuit. Each sample-and-hold subcircuit comprises an input buffer amplifier, a diode-bridge switch responsive to a control signal and coupled to the input buffer amplifier, a charge-holding capacitor coupled to the switch, and an output buffer amplifier coupled to the capacitor. The output of the auxiliary output amplifier is further coupled to the main switch and the output of the main output amplifier is coupled to the output terminal. A generator generates the control signal for controlling the switches such that the same part of the time-varying signal passing through the main and auxiliary subcircuits is sampled. The time-varying signal passing through the main subcircuit is delayed such that the time-varying signals traveling through the main and auxiliary subcircuits reach the main switch at substantially the same time. The auxiliary subcircuit has a charge-holding capacitor extending between the switch output and ground. The main subcircuit charge-holding capacitor extends between the outputs of the main and axuiliary switch outputs so that the main capacitor only charges to a differential voltage existing between the two switch outputs.

REFERENCES:
patent: 3789304 (1974-01-01), May
patent: 3942124 (1976-03-01), Tarczy-Hornoch
patent: 4507621 (1985-03-01), Meyer

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