Signal processing device, signal processing method, reception device, transmission/reception device, communication module, and electronic device

A signal processing device for amplifying an inputted analog signal, and converting the amplified signal to a digital signal for output comprising:

• an analog circuit unit for processing the analog signal arranged on a substrate;
• and
• a digital circuit unit for processing the digital signal arranged on a substrate,
• wherein the analog circuit unit performs amplification and cuts off a high frequency component with respect to the inputted analog signal,
• wherein the digital circuit unit performs conversion to a digital signal of a predetermined format and waveform rectification with respect to the signal which is subjected to amplification and whose high frequency component is cut off by the analog circuit unit for output,
• wherein the analog circuit unit further comprises an amplification circuit for amplifying the inputted analog signal, wherein the amplification circuit comprises a gain adjusted to cut off the high frequency component, and
• wherein the gain is adjusted with a current value for driving the amplification circuit.

A signal processing device for amplifying an inputted analog signal, and converting the amplified signal to a digital signal for output comprising:

• an analog circuit unit for processing the analog signal arranged on a substrate;
• and
• a digital circuit unit for processing the digital signal arranged on a substrate,
• wherein the analog circuit unit performs amplification and cuts off a high frequency component with respect to the inputted analog signal,
• wherein the digital circuit unit performs conversion to a digital signal of a predetermined format and waveform rectification with respect to the signal which is subjected to amplification and whose high frequency component is cut off by the analog circuit unit for output, and
• wherein the digital circuit unit further comprises:
• a waveform rectification circuit for rectifying a waveform of the signal which is subjected to amplification and whose high frequency component is cut off by the analog circuit unit, wherein the waveform rectification circuit is an inverter;
• and
• a conversion circuit for converting the signal which waveform is rectified by the waveform rectification circuit to the digital signal for output.

A signal processing method of a signal processing device for amplifying an inputted analog signal, and converting the amplified signal to a digital signal for output, the signal processing device having an analog circuit unit for processing the analog signal and a digital circuit unit for processing the digital signal arranged on a substrate, the method comprising the steps of:

• performing amplification and cutting off a high frequency component with respect to the inputted analog signal in the analog circuit unit;
• performing conversion to a digital signal of a predetermined format and waveform rectification with respect to a signal which is subjected to amplification and whose high frequency component is cut off in the digital circuit unit for output;
• and
• rectifying the waveform for output by converting the signal which is subjected to amplification and whose high frequency component is cut off by the analog circuit unit to the digital signal, and
• wherein the analog circuit unit differentially outputs a signal which is subjected to amplification and whose high frequency component is cut off.