Patent ID: 8587465

Claim:
A successive approximation analog-to-digital converter (SA-ADC), comprising: a reference generator configured to output a first voltage and a second voltage, wherein the reference generator comprises a current source input toggle and an operational amplifier input toggle; a comparator, the comparator having a positive input and a negative input thereto, the comparator being configured to receive the first voltage and the second voltage; and a comparator input toggle located between the reference generator and the comparator, wherein the comparator input toggle is configured to receive the first and second voltages from the reference generator and provide the first and second voltages to the comparator, wherein the comparator input toggle is further configured to switch between a first position, in which the first voltage is connected to the positive input of the comparator, and the second voltage is connected to the negative input of the comparator, and a second position, in which the second voltage is connected to the positive input of the comparator, and the first voltage is connected to the negative input of the comparator.