本文介紹了HT71D02/HT71D04主要特性,方框圖和系統(tǒng)方框圖以及應用電路.Holtek公司的HT71D0x是動力線數(shù)據(jù)收發(fā)器, HT71D02內(nèi)置3.3V穩(wěn)壓器輸出, HT71D04內(nèi)置5.0V穩(wěn)壓器輸出, 全系列高壓輸入電壓可達30V. 經(jīng)由內(nèi)置數(shù)據(jù)傳輸調(diào)制接口,可將高壓傳輸在線數(shù)據(jù)解調(diào)并轉(zhuǎn)為3.3V or 5V信號給子系統(tǒng)MCU,亦可將子系統(tǒng)MCU信號調(diào)制后轉(zhuǎn)為高壓經(jīng)由傳輸線傳回主系統(tǒng),適用于諸如煙感器、水表等聯(lián)網(wǎng)系統(tǒng)產(chǎn)品。
HT71D02/HT71D04主要特性:
_ Complete Data Transmission on Power Line functions
_ High Maximum Input Voltage: 30V
_ Integrated Low Dropout Voltage Regulator
_ Integrated Voltage Detector for Power Supply Monitoring
_ Open drain NMOS drivers for flexible interfacing
_ Power and Reset Protection Features
_ 8-pin SOP package type
_ Minimal external component requirements
圖1.HT71D02/HT71D04方框圖
圖2.HT71D02/HT71D04系統(tǒng)方框圖
圖3.HT71D02/HT71D04應用電路圖