Patent ID: 8921755

Claim:
A detection circuit with correlated double sampling comprising: a first capacitive transimpedance amplifier, a photodiode connected to an input of the first transimpedance amplifier, a second capacitive transimpedance amplifier, a sampling capacitor connected between an output of the first transimpedance amplifier and an input of the second transimpedance amplifier, an anti-blooming circuit connected between the input and output of the first transimpedance amplifier, the anti-blooming circuit comprising: a comparator configured to compare the output voltage of the first transimpedance amplifier with a setpoint voltage defined from the output voltage of the second transimpedance amplifier, and a circuitry configured to apply a feedback current to the input of the first transimpedance amplifier when the difference between the output voltage and the setpoint voltage reaches a limit value.