Linear high gain sampling amplifier

Details Linear high gain sampling amplifier Linear high gain sampling amplifier

H - Electricity

04

N

330/12, 350/83

H04N 5/18 (2006.01) H03F 3/72 (2006.01) H04N 9/72 (2006.01)

Patent

CA 1171923

RCA 75,820 Abstract A signal sampling circuit comprising a switch network coupled to a transconductance amplifier for providing output currents proportional to input voltage, an input clamp network, and a charge storage device is disclosed. The amplifier signal input is clamped to a reference potential via a negative current feedback path when the switch occupies a first position during nonsampling, clamping intervals. During subsequent sampling intervals, the switch occupies a second position for decoupling the feedback path and coupling the amplifier output to the storage device, so that the storage device then develops a sample of amplifier output signals, referenced to the clamping potential, as a function of amplifier output currents.

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