A circuit, comprising: - an analog-to-digital conversion circuit path (12, 14, 18) configured to provide converted digital data (20 1, 20 2,..., 20 N) from analog input signals, - a further analog-to-digital conversion circuit path (12, 140, 180) configured to provide further converted digital data from the analog input signals, - comparison circuitry configured to perform a comparison of the digital data (20 1, 20 2,..., 20 N) from the analog-to-digital conversion circuit path (12, 14, 18) with the further digital data from the further analog-to-digital conversion circuit path (12, 140, 180) and declare a fault condition of the circuit as a result of the comparison revealing a mismatch between the digital data (20 1, 20 2,..., 20 N) from the analog-to-digital conversion circuit path (12, 14, 18) and the further digital data from the further analog-to-digital conversion circuit path (12, 140, 180), characterized in that: the circuit comprises a sampling circuit stage configured to receive the analog input signals and provide a sampled version thereof, the sampling circuit stage being common to the analog-to-digital conversion circuit path (12, 14, 18) and the further analog-to-digital conversion circuit path (12, 140, 180), wherein: - the analog-to-digital conversion circuit path (12, 14, 18) comprises a quantization circuit stage coupled to the common sampling circuit stage and configured to provide said digital data (20 1, 20 2,..., 20 N) from said sampled version of the analog input signals; and - the further analog-to-digital conversion circuit path (12, 140, 180) comprises a further quantization circuit stage coupled to the common sampling circuit stage and configured to provide said further digital data from said sampled version of the analog input signals. - an analog-to-digital conversion circuit path (12, 14, 18) configured to provide converted digital data (20 1, 20 2,..., 20 N) from analog input signals, - a further analog-to-digital conversion circuit path (12, 140, 180) configured to provide further converted digital data from the analog input signals, - comparison circuitry configured to perform a comparison of the digital data (20 1, 20 2,..., 20 N) from the analog-to-digital conversion circuit path (12, 14, 18) with the further digital data from the further analog-to-digital conversion circuit path (12, 140, 180) and declare a fault condition of the circuit as a result of the comparison revealing a mismatch between the digital data (20 1, 20 2,..., 20 N) from the analog-to-digital conversion circuit path (12, 14, 18) and the further digital data from the further analog-to-digital conversion circuit path (12, 140, 180), the circuit comprises a sampling circuit stage configured to receive the analog input signals and provide a sampled version thereof, the sampling circuit stage being common to the analog-to-digital conversion circuit path (12, 14, 18) and the further analog-to-digital conversion circuit path (12, 140, 180), wherein: - the analog-to-digital conversion circuit path (12, 14, 18) comprises a quantization circuit stage coupled to the common sampling circuit stage and configured to provide said digital data (20 1, 20 2,..., 20 N) from said sampled version of the analog input signals; and - the further analog-to-digital conversion circuit path (12, 140, 180) comprises a further quantization circuit stage coupled to the common sampling circuit stage and configured to provide said further digital data from said sampled version of the analog input signals. - the analog-to-digital conversion circuit path (12, 14, 18) comprises a quantization circuit stage coupled to the common sampling circuit stage and configured to provide said digital data (20 1, 20 2,..., 20 N) from said sampled version of the analog input signals; and - the further analog-to-digital conversion circuit path (12, 140, 180) comprises a further quantization circuit stage coupled to the common sampling circuit stage and configured to provide said further digital data from said sampled version of the analog input signals.