Patent ID: 6169286
Filing Date: 2001-01-02
Classification: H01L

Abstract:
An electromagnetic radiation imaging sensor, comprising: a) a first and a second control line; b) a first and a second input source line; c) an output sense line; d) a transducer for converting charge to radiation, said transducer having first and second contacts, said first contact being connected to a source of bias voltage; e) a first transistor device having a first control input connected to said first control line, a second control input connected to said second contact of said transducer, a first signal terminal connected to said first input source line, and a second signal terminal connected to said output sense line; f) a second transistor having a control input connected to said second control line, a first signal terminal connected to said second input source line, and a second signal terminal connected to the second control input of said first transistor; g) a source of constant voltage connected to said first input source line; h) a source of controlled variable voltage connected to said second input source line; i) a first capacitor switchable between ground and said output sense line; j) a second capacitor switchable between ground and said output sense line; and k) a comparator having first and second inputs connected to said first and second capacitors, respectively, and an output.