Data converter, and a data conversion method, and the transmission circuit, communications equipment, and electronic equipment using the same

摘要

PPROBLEM TO BE SOLVED: To provide a transmitter circuit in which quantization noise is suppressed and power consumption can be reduced, and to provide a data converter and data conversion method used therefor, and communication device using the same. PSOLUTION: The data converter for converting an input signal to a signal to be input to an amplifier includes: an amplitude detection section for detecting an amplitude level of the input signal; a region determination section for determining whether or not an input power to the amplifier is in a non-linear region of the amplifier on the basis of the amplitude level of the input signal detected by the amplitude detection section; and a signal processing section for converting the input signal to a signal having a lower resolution than that of the input signal if the region determination section determines that the input power to the amplifier is in the non-linear region of the amplifier. PCOPYRIGHT: (C)2005,JPO&NCIPI