Patent ID: 7701376
Filing Date: 2010-04-20
Classification: H03M

Abstract:
1. A digital calibration type analog-to-digital converter comprising: a first analog-to-digital conversion unit, a second analog-to-digital conversion unit, a digital calibration section that calibrates an output from the first analog-to-digital conversion unit, and a switching control section that is controlled by identification information, wherein the first analog-to-digital conversion unit corresponds to a high sample rate at low precision and the second analog-to-digital conversion unit corresponding to a low sample rate at high precision, wherein, when the identification information displays a state of receiving a high-data rate signal, the switching control section operates the first analog-to-digital conversion unit, the second analog-to-digital conversion unit, and the digital calibration section so as to perform an analog-to-digital conversion, and wherein, when the identification information displays a state of receiving a low-data rate signal, the switching control section stops operations of the first analog-to-digital conversion unit and the digital calibration section and allows the second analog-to-digital converter to perform the analog-to-digital conversion.