| 摘要 |
A filtering arrangement comprises a reference voltage input (1) and a compensation current arrangement (10) coupled to the reference voltage input (1) and configured to provide a control current at a current output (2) as a function of a voltage at the reference voltage input (1). The filtering arrangement also comprises a first and a second current source (20, 30) each having a control input (4, 5) coupled to the current output (2), a first and a second filter input (7, 8), and a first transistor (T1) and a second transistor (T2). The first transistor (T1) has a first connection (T11), a second connection (T12) and a control connection (T1c), where its first connection (T11) is coupled to the first current source (20) and its second connection (T12) is coupled to the first filter input (7) through a first resistor (R1). The second transistor (T2) has a first connection (T21), a second connection (T22) and a control connection (T2c), where its first connection T21) is coupled to the second current source (30), its second connection (T22) is coupled to the second filter input (8) through a second resistor (R2) and its control connection (T2c) is coupled to its first connection (T21) and to the control connection (T1c) of the first transistor (T1). A capacitive element (C1) is coupled between the first connection (T11) of the first transistor (T1) and the second connection (T22) of the second transistor (T2) and a filter output (6) is coupled to the first connection (T11) of the first transistor (T1). |
