23-05-2013 дата публикации
Номер: US20130126734A1
An infrared light detector including at least one sensor chip that has a layer element that is produced from a pyroelectrically sensitive material and further has a base electrode and a head electrode, to which the layer element is connected for tapping electric signals generated in the layer element by irradiation of the at least one sensor chip with light. The detector further includes a transimpedance amplifier for amplifying the signals with an operational amplifier, which is asymmetrically operated by a supply voltage source having a positive supply voltage and to the inverting input of which the base electrode is connected. At the voltage supply source, a voltage divider connected to ground is provided with a partial node, to which a partial voltage that is smaller than the supply voltage is applied and which is electrically coupled to the non-inverting input and to the head electrode. 1. An infrared light detector comprising:{'b': 3', '4', '5', '8', '6', '9', '7', '10, 'at least one sensor chip (, ) that includes a layer element (, ) made of a pyroelectrically sensitive material, a base electrode (, ) and a head electrode (, ),'}{'b': 5', '8', '6', '9', '7', '10', '5', '8', '2', '6', '9', '7', '10, 'wherein the layer element (, ) is connected to the base electrode (, ) and the head electrode (, ) to tap an electrical signal generated in the layer element (, ) as a result of light () radiation applied to the base electrode (, ) and the head electrode (, ), and'}{'b': 11', '12', '19', '25', '13, 'a transimpedance amplifier (, ) for amplifying the signal, with an operational amplifier (, ) which is operated asymmetrically by a supply voltage source () having a positive supply voltage,'}{'b': 6', '9', '21', '27', '19', '25', '15', '14', '13', '18', '18', '20', '26', '7', '10, 'wherein the base electrode (, ) is connected to the inverting input (, ) of the operational amplifier (, ), and a voltage divider () connected to ground () at the supply voltage source () ...
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