Light propagation time sensor with a charge compensation device

摘要

The present invention provides a time-of-flight sensor (22) including at least one time-of-flight pixel (23) for demodulating a received modulated light beam (Sp2), wherein the time-of-flight pixel (23) comprises at least two integrating nodes (Ga, Gb) and the integration nodes (Ga, Gb) are connected to a device (500) for charge compensation, wherein the charge compensation device (500) comprises at least two SBI input transistors (M1, M2) which at a potential (Ua, Ub) of the integration nodes (Ga, Gb) which according to the amount exceeds an SBI threshold value (U_SBI) drive SBI current transistors (M3, M4) such that at both integration nodes (Ga, Gb) a compensating current (i_k) of the same level flows, wherein the source terminals of the SBI-current transistors (M3, M4) are not connected to a supply voltage (U_DD) but are connected to a working voltage (U_RES, U_arb) (FIG. 7).