Patent ID: 7589658

Claim:
An analog-to-digital converter (ADC) device comprising: an input terminal to receive an analog signal; an analog component coupled to the input terminal and comprising: an amplifier comprising an input and an output; and a capacitor network coupled to the input and the output of the amplifier, the capacitor network comprising: a first programmable capacitor comprising a first terminal coupleable to the input terminal and coupleable to the output of the amplifier, and a second terminal coupleable to the input of the amplifier and coupleable to a voltage reference; and a second programmable capacitor comprising a first terminal coupleable to the input terminal and coupleable to the voltage reference and a second terminal coupleable to the input of the amplifier and coupleable to the voltage reference; and control logic configured to: in a first mode, configure the capacitor network and the amplifier in an amplification configuration to amplify the analog signal by a predetermined gain to generate an amplified analog signal; and in a second mode, configure the capacitor network and the amplifier to generate a series of one or more residue voltages using the amplified analog signal.