Patent ID: 7741985

Claim:
A digital/analogue converter for converting an input n-bit digital code, where n is an integer greater than one, the digital/analogue converter having an n-bit digital input and an output for connection to a load, the digital/analogue converter comprising: an array of (n− 1 ) switched capacitors; and a switching arrangement configured to, connect a first reference voltage to a first plate of at least one capacitor of the array of (n− 1 ) switched capacitors if the digital/analogue converter is in a zeroing phase of operation, connect a second plate of the at least one capacitor to a voltage if the digital/analogue converter is in the zeroing phase of operation, the voltage being different from the first reference voltage for at least one value of the input digital code, and enable injection of charge into the at least one capacitor based on the value of the input digital code if the digital/analogue converter is in a decoding phase of operation.