A tunable analog-to-digital converter, which generates samples having, M-bits for use with an operating circuit. The operating circuit generates a first enable signal to instruct the analog-to-digital converter to turn on.
Additionally, a sensor generates an analog signal in response to a condition. The tunable analog-to-digital converter includes a primary analog-to-digital converter that receives the analog signal and converts the analog signal to a primary digital signal upon receipt of the first enable signal.
The tunable analog-to-digital converter also includes a comparator and a secondary analog-to-digital converter.
The comparator compares the value of the primary digital signal to a predetermined value and generates a second enable signal depending on the value of the primary digital signal and the predetermined value.
The secondary analog-to-digital converter receives the analog signal and converts the analog signal to a secondary digital signal upon receipt of the second enable signal.