Patent ID: 11876539
Assignee: AMS INTERNATIONAL AG
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An optical front end circuit comprising
the current to digital converter circuit according to claim 4, wherein the current signal at the input of the integrator amplifier comprises a photocurrent of a photodiode which can be connected to said input,
a sampling capacitor which is coupled to the output of the integrator amplifier via a second switch, the second switch being controlled by a sampling clock signal,
an analog-to-digital converter, ADC, circuit which is coupled by its input to the sampling capacitor via a third switch, the third switch being controlled by a conversion clock signal, the ADC circuit having an output at which a digital signal is provided, wherein the digital signal is a function of the current signal and comprises N bit, wherein N is an integer greater than or equal to one, and
a calculation circuit which is coupled to the output of the ADC circuit and to an output of the quantizer circuit, the calculation circuit being prepared to provide a digital word signal by combining the binary result signal with the digital signal.