Abstract: This application note describes a new generation of digital-input Class D audio amplifiers that achieve high PSRRperformance, comparable to traditional analog Class D amplifiers. More importantly, these digital-input Class D amplifiersprovide additional benefits of reduced power, complexity, noise, and system cost.
產(chǎn)品概述： iso 40xx系列產(chǎn)品實(shí)現(xiàn)傳感器和主機(jī)之間的信號(hào)采集，用以檢測(cè)模擬信號(hào)或控制遠(yuǎn)程設(shè)備。通過軟件的配置，可用于多種傳感器類型，包括：模擬信號(hào)輸入，模擬信號(hào)輸出，和數(shù)字信號(hào)輸入/輸出（i/o）。 iso 40xx系列產(chǎn)品可應(yīng)用在 rs-232/485總線工業(yè)自動(dòng)化控制系統(tǒng)，溫度信號(hào)測(cè)量、監(jiān)視和控制，小信號(hào)的測(cè)量以及工業(yè)現(xiàn)場信號(hào)隔離及長線傳輸?shù)鹊取．a(chǎn)品包括電源隔離、信號(hào)隔離及線性化，a/d轉(zhuǎn)換和rs-485串行通信。每個(gè)串口最多可接256只 iso 40xx系列模塊，通訊方式采用ascii碼、modbus通訊協(xié)議，其指令集兼容于adam模塊，波特率可由代碼設(shè)置，能與其他廠家的控制模塊掛在同一rs-485總線上，便于計(jì)算機(jī)編程。
Abstract: Class D amplifiers are typically very efficient, making them ideal candidates for portable applications that require longbattery life and low thermal dissipation. However, electromagnetic interference (EMI) is an issue that commonly accompanies theClass D switching topology. Active-emissions limiting reduces radiated emissions and enables "filterless" operation, allowingdesigners to create small, efficient portable applications with low EMI.
