Sample-and-hold amplifier with controllable source charger

Details Sample-and-hold amplifier with controllable source charger Sample-and-hold amplifier with controllable source charger

1988-05-27

1990-12-25

Shoop, Jr., William M.

Coded data generation or conversion

Digital code to digital code converters

Tree structure

341122, 307353, 328151, H03M 134

Patent

active

049806866

ABSTRACT:
A sample & hold amplifier (SHA) is particularly for systems requiring a fast and highly accurate analog storage of a instantaneous value of an input voltage. The SHA essentially comprises a comparator, integrator and control circuit. The comparator solves the problem of an amplifier overdrive and the integrator enforces a most desirable operation of an operational amplifier. The output voltage of the integrator and the input voltage of the SHA are applied to the comparator which provides an output signal to the control circuit. The output voltage of the integrator is changing linearly. The polarity of its slope is determined by the comparator so that the integrator output voltage can reach the value of the input voltage of the SHA, and is further stored when the integration is terminated.

REFERENCES:
patent: 4001812 (1977-01-01), Testa et al.
patent: 4573037 (1986-02-01), Robinton et al.
patent: 4749953 (1988-06-01), Gulczynski
patent: 4882586 (1989-11-01), Dolph et al.
Hoeschele, Jr., Analog-to-Digital/Digital-to-Analog Conversion-, J. Wiley & Sons, 1968, pp. 357 & 358.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. II-48 to II-51; III-2 to III-5; III-10 & III-11.

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