| 摘要 |
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. |
