Charge transfer device output

Details Charge transfer device output Charge transfer device output

1986-03-20

1986-12-02

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

046270833

ABSTRACT:
The invention relates to a charge-coupled device, in which the reset transistor of the output is clocked--with a positive threshold voltage--by a maximum voltage equal to the supply voltage V.sub.DD. The drain (14) of the reset transistor is adjusted by means of an auxiliary transistor (T.sub.1) controlled by a current source (T.sub.2) and having the same threshold voltage, whose gate (21) is applied to V.sub.DD and whose source (22) is connected to the drain (14) of the reset transistor. Due to the fact that the maximum gate voltage is equal to V.sub.DD, additional voltage sources, such as charge pumps, for generating voltages higher than V.sub.DD are superfluous.

REFERENCES:
patent: 4060737 (1977-11-01), Gosney
patent: 4093872 (1978-06-01), Hartman et al.
patent: 4242600 (1980-12-01), Hoffman et al.
patent: 4255673 (1981-03-01), Knauer
patent: 4280067 (1981-07-01), Kohyama
patent: 4584697 (1986-04-01), Hazendonk et al.

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