The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2001
Filed:
Jun. 30, 1999
Alan W. Hoffman, Goleta, CA (US);
Raytheon Company, Lexington, MA (US);
Abstract
A readout circuit (,) has an x-row by y-column array of readout unit cells (,) each having an input for coupling to an output of a radiation detector (,) and an output that is switchably coupled to one of y column output lines (,). Each unit cell includes a driver transistor (,) having a gate terminal coupled to the detector, a source terminal coupled to a source voltage, and a drain terminal switchably coupled to a drain voltage through one of y loads, such as one of y current sources (,). The drain terminal is switchably coupled to the one of y current sources through an output multiplexer switch (,). The current source is a common current source for all of the x unit cells coupled to a same one of the y column output lines. The unit cell further includes a capacitance coupled between the gate and drain terminals, and a reset switch also coupled between the gate and drain terminals.