Halbleiteranordnung mit einer Ladungsübertragungsanordnung

Dispositif semi-conducteur muni d'un dispositif de transfert de charge

Semiconductor device provided with a charge transfer device

Abstract

The invention relates to a semiconductor device comprising a charge transfer device having an output stage (8). The output stage (8) comprises a read-out zone (9), a feedback capacitor (11) and an amplifier (10). An inverting input (15) of the amplifier (10) is connected to the read-out zone (9) and an output (16) of the ampli­fier (10) is fed back via the feedback capacitor (11) to the inverting input (15). According to the invention, the capacitor (11) is a capacitor of the MOS type and means are provided by which during operation of the charge transfer device the surface potential of a surface region (13) in the capacitor (11) is solely determined by the potential of the read-out zone (9). Consequently, the capacitance of the feedback capacitor (11) is dependent upon the potential across it, as a result of which there is a linear relation between the charge supplied to the read-out zone (9) and the voltage variation across the capacitor (11). Thus, this voltage variation is an accurate measure for the supplied charge.

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    EP-0046549-A1March 03, 1982Siemens AktiengesellschaftEtage de sortie d'un dispositif à transfert de charges monolithiquement intégré
    US-3969636-AJuly 13, 1976General Electric CompanyCharge sensing circuit for charge transfer devices

NO-Patent Citations (1)

    Title
    PROCEEDINGS OF THE 5TH INTERNATIONAL CONFERENCE ON CHARGE-COUPLED DEVICES, University of Edinburgh, September 1979, pages 341-346; C.F. WALMSLEY et al.: "50 MHz time delay and integration CCD"

Cited By (3)

    Publication numberPublication dateAssigneeTitle
    EP-0457271-A2November 21, 1991Nec CorporationA charge transfer device
    EP-0457271-A3April 15, 1992Nec CorporationA charge transfer device
    EP-0632506-A1January 04, 1995Texas Instruments IncorporatedA charge detection amplifier