Multiple preamplifiers with intervening overflow cell for charge

Details Multiple preamplifiers with intervening overflow cell for charge Multiple preamplifiers with intervening overflow cell for charge

1980-09-11

1983-08-09

Munson, Gene M.

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

Charge transfer device

Particular input or output means

357 24, 307304, G11C 1928, H01L 2978, H03K 3353

Patent

active

043983014

ABSTRACT:
Apparatus for amplifying output signals from a charge coupled area imaging device includes a resettable first floating gate amplifier connected to sense charge in the charge coupled device output register at a first location, a second floating gate amplifier connected to sense charge in the charge coupled device output register at a second location, and a charge limiting well disposed between the first location and the second location to remove charge in excess of a desired amount before the output signals are sensed at the second location. The dual preamplifiers permit optimization of the output signals from the charge coupled imaging device for two substantially different light levels by providing a substantially lower noise equivalent input signal level from the second preamplifier.

REFERENCES:
patent: 3806772 (1974-04-01), Early
patent: 4251834 (1981-02-01), Hall

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