AN ANALOG-TO-DIGITAL CONVERTER

The invention relates to an analog-to-digital converter (100) for converting an input voltage to a binary code. The analog-to-digital converter (100) comprises a comparator (104) which has an adjustable biasing current. The comparator (104) determines bits of a binary code (C1) based on a set of comparisons between an input voltage (Vin) and a set of reference voltages (Vref1, Vref2, ..., Vrefn) and in dependence on the biasing current of the comparator (104). The value of the biasing current is dependent on a redundancy of the binary code (C1) such that the value of the biasing current is decreased with increased redundancy and increased with decreased redundancy. Thereby, an improved trade-off between power and resolution can be achieved for the analog-to-digital converter (100).