Ad converter and data processing unit

An AD converter comprising:

• an input circuit for taking in an analog signal;
• an operation circuit for converting the analog signal taken in through the input circuit;
• and
• a bus for outputting a conversion result of the operation circuit,
• wherein the input circuit includes a plurality of channels, each of which takes in the analog signal,
• wherein the operation circuit includes a conversion result storing register, a parity bit generator circuit and a parity bit register, the conversion result storing register storing the conversion result of an input analog signal of each channel of the input circuit, the parity bit generator circuit being provided in correspondence to the conversion result storing register and generating a parity bit of the conversion result of the analog signal inputted through the input circuit, and the parity bit register storing the parity bit generated by the parity bit generator circuit, and
• wherein the conversion result storing register writes, together with the conversion result of the input signal of each channel of the input circuit, identification information of a corresponding channel.