Patent ID: 8481941

Claim:
A dual function injection type array readout device, comprising: at least two sensor groups, each of said sensor groups having two sensors of different functions, each of said sensors generating a sense current according to a corresponding sensed target; and a dual function injection type array readout circuit including: at least two dual function readout modules, each including: two readout units, each electrically coupled to a respective one of said sensors of a corresponding one of said sensor groups, each of said readout units including: a current-to-voltage converter having an integration capacitor, being electrically coupled to the respective one of said sensors, and controllable to selectively receive the sense current from the respective one of said sensors, wherein when said current-to-voltage converter receives the sense current, the sense current is stored in said integration capacitor for conversion into an integration voltage that is proportional to the magnitude of the sense current; and a sample-and-hold device electrically coupled to said current-to-voltage converter, and controllable to sample and hold the integration voltage to obtain an output voltage that is proportional to the magnitude of the sense current; and a switch unit electrically coupled to said integration capacitors of said readout units, and controllable to selectively connect said integration capacitors in parallel with each other.