Patent ID: 8179184
Filing Date: 2012-05-15
Classification: G06G,H03F

Abstract:
1. An arrangement for charge integration, comprising: an input to be supplied with a charge-dependent signal; an integrator configured to integrate a signal presented to an input of the integrator; a coupling circuit comprising first and second transistors, the first transistor being controlled depending on the charge-dependent signal, and the second transistor being configured to forward the charge-dependent signal depending on a control signal generated by the first transistor, said coupling circuit adopting at least two operating states to couple the input to the integrator and having a temperature-dependent coupling characteristic; and a correction circuit coupled to the integrator for providing clocked operation, the correction circuit comprising a charge store which is switchably coupled to the input and is configured to be charged to a state that depends on a specified charging voltage, a third transistor configured to be controlled depending on the state of charge of the charge store, and a fourth transistor configured to affect the state of charge of the charge store depending on a control signal generated by the third transistor; wherein the first and third transistors have temperature characteristics that correspond to one another; and wherein the correction circuit is coupled to the input to transfer a quantity of charge from the charge store to the input and has a temperature characteristic that is derived from the temperature-dependent coupling characteristic of the coupling circuit.