Electronic device and method for analog to digital conversion using successive approximation

An electronic device for analog-to-digital conversion using successive approximation, the device comprising:

• a successive approximation register storing a digital value;
• a digital-to-analog converter coupled to said successive approximation register, said digital-to-analog converter adapted to convert said digital value stored in said successive approximation register into an analog value and output said analog value;
• a comparator coupled to said digital-to-analog converter and receiving an analog input value, said comparator adapted to compare said analog value output from said digital-to-analog converter with said analog input value and generate a comparison signal;
• a control stage connected to said successive approximation register and said comparator, said control stage adapted to
• load a first digital value into said successive approximation register,
• increase said digital value stored said successive approximation register if said comparison signal indicates said analog value output from said digital-to-analog converter is less than said analog input value, and
• decrease said digital value stored said successive approximation register if said comparison signal indicates said analog value output from said digital-to-analog converter is greater than said analog input value.