Charge coupled device provided with automatic bias-voltage setti

Details Charge coupled device provided with automatic bias-voltage setti Charge coupled device provided with automatic bias-voltage setti

1984-11-16

1986-11-25

Miller, Stanley D.

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

Charge transfer device

Compensating for or preventing signal charge deterioration

307297, 307353, 357 24, 377 59, 377 63, H01L 2976

Patent

active

046253220

ABSTRACT:
A bias voltage setting circuit for a main charge coupled device is disclosed in which first and second auxiliary charge coupled devices are formed on a semiconductor substrate together with the main charge coupled device, a reference voltage is generated by the first auxiliary charge coupled device, the output voltage of the second auxiliary charge coupled device is compared with the reference voltage by means of a comparator, the bias voltage applied to the second auxiliary charge coupled device is automatically changed by a feedback circuit so that the output voltage of the second auxiliary charge coupled device is approximately equal to the reference voltage, and the bias voltage applied to the second auxiliary charge coupled device is also used as the bias voltage applied to the main charge coupled device.

REFERENCES:
patent: 4156818 (1979-05-01), Collins et al.
patent: 4223234 (1980-09-01), Levine
patent: 4255673 (1981-03-01), Knauer
patent: 4412343 (1983-10-01), Kosonocky
patent: 4454435 (1984-06-01), Burns
patent: 4521896 (1985-06-01), Borsuk et al.
patent: 4556851 (1985-12-01), Levine
patent: 4573177 (1986-02-01), Petrosky
patent: 4574384 (1986-03-01), Murata et al.
Chai et al. "Noise Compensator for Charge-Coupled Devices", IBM T.D.B., vol. 16, No. 4, 9-1973.

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