LIGHT SENSOR READOUT SYSTEM AND METHOD OF CONVERTING LIGHT INTO ELECTRICAL SIGNALS

摘要

Systems and methods of the disclosed subject matter for converting light into electrical signals are provided including receiving light input and outputting electrical signals proportional to the light input with a sensor, increasing a transimpedance gain of an amplifier to amplify the electrical signals with a T-network of resistors coupled to the amplifier and the sensor, filtering the electrical signals with a filter circuit coupled to the amplifier and the T-network of resistors to increase noise rejection in a predetermined frequency range, and outputting the filtered electrical signals.

主权项

1. A system comprising:
a sensor to receive light input and to output electrical signals proportional to the light input; an amplifier having an output terminal, a first input terminal connected to an output of the sensor, and a second input terminal to receive a bias voltage, the amplifier to amplify the electrical signals; a first resistor, a second resistor, and a third resistor configured in a T-network connected between the amplifier output terminal and the first input terminal; and a first capacitor in parallel with the first resistor, the second resistor, and the third resistor, and a second capacitor in series with the third resistor to filter the electrical signals in a predetermined frequency range so as to output filtered electrical signals.