Sample-and-hold circuit arrangement

Details Sample-and-hold circuit arrangement Sample-and-hold circuit arrangement

G - Physics

11

C

328/171

G11C 27/02 (2006.01)

Patent

CA 1246158

PHN.11.395 8 9.4.1986 ABSTRACT: Sample-and-hold circuit arrangement. The invention relates to a sample-and-hold circuit arrangement comprising a differential amplifier (5) followed by an inverting amplifier (8). In accordance with the invention there is provided a third amplifier (12) and a capacitor (14) which connects an out- put of the third amplifier to its input. The inverting amplifier (68) ensures that the voltage on the output (16) of the arrange- ment is independent of the offset voltage of the differential amplifier (5). Moreover, the capacitor (14) maintains the voltage on the output (15) during a sampling interval at the value which it had in the directly preceding hold interval. Fig. 1.

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