Fish & Richardson P.C.
High-speed light sensing apparatus III
A circuit, including: a photodetector including a first readout terminal and a second readout terminal different than the first readout terminal; a first readout circuit coupled with the first readout terminal and configured to output a first readout voltage; a second readout circuit coupled with the second readout terminal and configured to output a second readout voltage; and a common-mode analog-to-digital converter (ADC) including: a first input terminal coupled with a first voltage source; a second input terminal coupled with a common-mode generator, the common-mode generator configured to receive the first readout voltage and the second readout voltage, and to generate a common-mode voltage between the first and second readout voltages; and a first output terminal configured to output a first output signal corresponding to a magnitude of a current generated by the photodetector.
Artilux, Inc.
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Han-Din Shu-Lu Chieh-Ting Bo-Jiun Hui-Wen Yuan-Fu Szu-Lin Chien-Lung Chung-Chih Yun-Chung Shu-Wei Che-Fu Kuan-Chen
Liu Chen Lin Chen Chen Lyu Cheng Chen Lin Na Chu Liang Chu