Input circuit for inserting charge packets into a charge-transfe

Details Input circuit for inserting charge packets into a charge-transfe Input circuit for inserting charge packets into a charge-transfe

1975-12-02

1977-07-12

Larkins, William D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

357 24, G11C 1928, H01L 2978

Patent

active

040356671

ABSTRACT:
An input circuit for a charge-transfer-device such as a bucket-brigade or charge-coupled-device incorporating an input terminal connected to an input diode source diffusion of the charge-transfer-device through a capacitor C. The nonlinear depletion capacitance C.sub.d associated with the input circuit is schematically shown connected in parallel with C at a first node. The non-linear capacitance C.sub.d, which is parasitic, is a basic cause of distortion of the input charge packets. The input circuit further includes an active device such as an IGFET connected in parallel with the input terminal to provide a supply of charge carriers. The gate of the active device is connected to a reset signal source.

REFERENCES:
patent: 3881117 (1975-09-01), Tompsett
Tompsett et al., "Use Of Charge-Coupled Devices For Delaying Analog Signals", IEEE J. Solid State Circuits, vol. SC-8, (Apr. 1973), pp. 151-157.
Emmons et al., "Noise Measurements On The Floating Diffusion Input For Charge-Coupled Devices", J. Applied Physics, vol. 45, (Dec. 1974), pp. 5303-5306.
Emmons et al., "A Low-Noise CCD Input With Reduced Sensitivity To Threshold Voltage", Int. Electron Devices Meeting Tech. Dig., (Dec. 1974), pp. 233-235.
Sequin et al., "Linearity Of Electrical Charge Injection Into Charge Coupled Devices", Int. Electron Devices Meeting Tech. Dig., (Dec. 1974), pp. 229-232.

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