Ultra sensitive silicon sensor readout circuitry

Details Ultra sensitive silicon sensor readout circuitry Ultra sensitive silicon sensor readout circuitry

2007-01-02

2007-01-02

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

11239297

ABSTRACT:
A readout circuit for a bolometer type sensor including a pair of back-to-back temperature sensing diodes connected in an electro-thermal feedback loop including a semiconductor amplifier circuit located in an intermediate stage between a detector stage and a heat bath stage and wherein the heat generated by the amplifier equalizes the temperature between the intermediate stage and the detector stage. The readout circuitry also includes circuitry for removing local threshold voltage variations and low frequency 1/f noise components in the readout signal while providing high temperature sensitivity and relatively high voltage gain.

REFERENCES:
patent: 6028309 (2000-02-01), Parrish et al.
patent: 6489615 (2002-12-01), Bluzer
patent: 2002/0117622 (2002-08-01), Bluzer

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