Floating gate amplifier using conductive coupling for charge cou

Details Floating gate amplifier using conductive coupling for charge cou Floating gate amplifier using conductive coupling for charge cou

1979-06-04

1985-08-27

Munson, Gene M.

Electrical pulse counters, pulse dividers, or shift registers: c

Charge transfer device

Particular input or output means

357 24, G11C 1928, H01L 2978

Patent

active

045382875

ABSTRACT:
A floating gate amplifier in a charge-coupled device (CCD) permitting non-destructive readout, where the floating gate is conductively coupled through a high resistance element to a bias voltage. The floating gate is defined by a lower level of metallization which is embedded in an insulating layer and crosses the charge transfer channel. In one embodiment the floating gate is connected to the source of a metal-oxide-semiconductor transistor and the drain of the transistor is connected to an upper level conductor which is a bias line. In another embodiment, the anode of a diode is connected to the floating gate and the diode cathode is connected to the bias line. A pair of control gates adjacent to and partially overlapping the floating gate transfer charge packets and improve sensitivity. Reading is accomplished by detecting voltages induced on the floating gate by the charge packets.

REFERENCES:
patent: 3758794 (1973-09-01), Kosonocky
patent: 4090095 (1978-05-01), Herrmann
patent: 4104543 (1978-08-01), Maeding
Wen, "Design and Operation of a Floating Gate Amplifier", IEEE J. Solid-State Circuits, vol. SC-9 (12/74), pp. 410-414.

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