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A mixed-signal integrated circuit is any integrated circuit that has both analog circuits and digital circuits on a single semiconductor die. 〔 Saraju Mohanty, Nanoelectronic Mixed-Signal System Design, McGraw-Hill, 2015, ISBN 978-0071825719 and 0071825711. 〕 〔 ("Mixed-Signal IC Design" ). quote: "mixed-signal (IC's with mixed analog and digital circuits on a single chip)" 〕 〔 Mark Burns and Gordon W. Roberts, "An Introduction to Mixed-Signal IC Test and Measurement", 2001. 〕 〔 ("ESS Mixed Signal Circuits" ) 〕 In real-life applications mixed-signal designs are everywhere, for example, a smart mobile phone. However, it is more accurate to call them mixed-signal systems. Mixed-signal ICs also process both analog and digital signals together. For example, an analog-to-digital converter is a mixed-signal circuit. Mixed-signal circuits or systems are typically cost-effective solutions for building any modern consumer electronics applications. ==Introduction== A mixed-signal system-on-a-chip (AMS-SoC) can be a combination of analog circuits, digital circuits, intrinsic mixed-signal circuits (like ADC), and Embedded Software. Integrated Circuits (ICs) are generally classified as digital (e.g. a microprocessors) or analog (e.g. an operational amplifier). Mixed-signal ICs are chips that contain both digital and analog circuits on the same chip. This category of chip has grown dramatically with the increased use of 3G cell phones and other portable technologies. Mixed-signal ICs are often used to convert analog signals to digital signals so that digital devices can process them. For example, mixed-signal ICs are essential components for FM tuners in digital products such as media players, which have digital amplifiers. Any analog signal (such as an FM radio transmission, a light wave or a sound) can be digitized using a very basic analog-to-digital converter, and the smallest and most energy efficient of these would be in the form of mixed-signal ICs. Mixed-signal ICs are more difficult to design and manufacture than analog-only or digital-only integrated circuits. For example, an efficient mixed-signal IC would have its digital and analog components share a common power supply. However, as one can imagine, analog and digital components have very different power needs and consumption characteristics that make this a non-trivial goal in chip design. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mixed-signal integrated circuit」の詳細全文を読む スポンサード リンク
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