The domino asynchronous successive approximation analog-to-digital converter converts an analog signal to an n-bits digital signal. The OCB instructions are provided with two direct branch fields or with two indirect branch fields. Also, a plant for implementing the process. The device may send an encrypted version of the random session key to the smart card reader. The voltage divider is electrically coupled in series between the first and second terninals and in parallel with the heating element and the power regulation device.