A circuit, comprising: a circuit input; a circuit output (VOUT); at least one passive feedback loop (602a, 602b) coupled between the circuit output (VOUT) and the circuit input; an active element, in particular a DC coupled operational amplifier (OPAMP), coupled in a feed-forward path of the circuit between the circuit input and the circuit output (VOUT) and configured to drive the at least one feedback loop in order to establish a function of the circuit, wherein the active element includes an input path between a drive voltage and ground including a first current source, a first transistor and a second current source (Io) and an output path between the drive voltage and ground including a second transistor and a third current source (lout), wherein a control terminal of the first transistor is coupled to the circuit input and a first terminal of the second transistor is coupled to the circuit output (VOUT); wherein the feed-forward path of the circuit comprises a second node (Vx) and a first node (Vy) which are internal nodes of the active element wherein a control terminal of the second transistor is the first node (Vy); wherein the first node (Vy) is coupled, directly or via a cascade transistor, to a second terminal of the first transistor, wherein the first node (Vy) is configured to have a first voltage, wherein a voltage of the circuit output (VOUT) is a function of the first voltage, characterised in that the active element comprises a first voltage drop element (603a, 603b) coupled between the second node (Vx) and the first node (Vy), and wherein the first voltage drop element (603a, 603b) is adjustable and configured to provide an adjustable voltage drop between first node (Vy) and the second node (Vx) in order to decouple a DC level at the first node from a DC level at the second node (Vx) and to provide the DC level at the first node (Vy) independently from the DC level at the second node (Vx); wherein the first voltage drop element (603a, 603b) comprises: a voltage drop resistor (Rb) and a voltage drop capacitor (Cb) coupled in parallel between the first node and the second node; wherein a first current source (Mb) is configured to generate a current flowing into the first node such that a DC voltage at the first node is higher than a DC voltage at the second node; and wherein the first current source (Mb) is configured to generate a current flowing out of the first node such that a DC voltage at the first node is lower than a DC voltage at the second node. a circuit input; a circuit output (VOUT); at least one passive feedback loop (602a, 602b) coupled between the circuit output (VOUT) and the circuit input; an active element, in particular a DC coupled operational amplifier (OPAMP), coupled in a feed-forward path of the circuit between the circuit input and the circuit output (VOUT) and configured to drive the at least one feedback loop in order to establish a function of the circuit, wherein the active element includes an input path between a drive voltage and ground including a first current source, a first transistor and a second current source (Io) and an output path between the drive voltage and ground including a second transistor and a third current source (lout), wherein a control terminal of the first transistor is coupled to the circuit input and a first terminal of the second transistor is coupled to the circuit output (VOUT); wherein the feed-forward path of the circuit comprises a second node (Vx) and a first node (Vy) which are internal nodes of the active element wherein a control terminal of the second transistor is the first node (Vy); wherein the first node (Vy) is coupled, directly or via a cascade transistor, to a second terminal of the first transistor, wherein the first node (Vy) is configured to have a first voltage, wherein a voltage of the circuit output (VOUT) is a function of the first voltage, characterised in that the active element comprises a first voltage drop element (603a, 603b) coupled between the second node (Vx) and the first node (Vy), and wherein the first voltage drop element (603a, 603b) is adjustable and configured to provide an adjustable voltage drop between first node (Vy) and the second node (Vx) in order to decouple a DC level at the first node from a DC level at the second node (Vx) and to provide the DC level at the first node (Vy) independently from the DC level at the second node (Vx); wherein the first voltage drop element (603a, 603b) comprises: a voltage drop resistor (Rb) and a voltage drop capacitor (Cb) coupled in parallel between the first node and the second node; wherein a first current source (Mb) is configured to generate a current flowing into the first node such that a DC voltage at the first node is higher than a DC voltage at the second node; and wherein the first current source (Mb) is configured to generate a current flowing out of the first node such that a DC voltage at the first node is lower than a DC voltage at the second node. a voltage drop resistor (Rb) and a voltage drop capacitor (Cb) coupled in parallel between the first node and the second node; wherein a first current source (Mb) is configured to generate a current flowing into the first node such that a DC voltage at the first node is higher than a DC voltage at the second node; and wherein the first current source (Mb) is configured to generate a current flowing out of the first node such that a DC voltage at the first node is lower than a DC voltage at the second node.