Semiconductor device including integrator and successive approximation register analog-to-digital converter and driving method of the same

摘要

A semiconductor device includes an integrator, a successive approximation register analog-to-digital converter (SAR ADC) and a residue capacitor. The integrator is configured to receive a signal and generate a first analog signal during a first operation mode using a capacitor module comprising one or more capacitors. The SAR ADC is configured to receive the first analog signal, convert the first analog signal into a first digital signal using the capacitor module, and generate a first residue signal in a second operation mode. The residue capacitor is connected to the capacitor module in parallel, and is configured to receive the first residue signal in the second operation mode and provide the first residue signal to the integrator in the first operation mode.