Mixed-Signal Front End Set-Top Box, Cable Modem

GENERAL DESCRIPTION The AD9877 is a single-supply set-top box and cable modem mixed-signal front end. The device contains a transmit path interpolation filter, complete quadrature digital upconverter, and transmit DAC. The receive path contains a 12-bit ADC and dual 8-bit ADCs. All internally req

文件：1.09425 Mbytes 頁(yè)數(shù)：36 Pages

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Mixed-Signal Front End Set-Top Box, Cable Modem

文件：1.10081 Mbytes 頁(yè)數(shù)：36 Pages

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Set-Top Box, Cable Modem

文件：491.29 Kbytes 頁(yè)數(shù)：37 Pages

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單電源電纜調(diào)制解調(diào)器/機(jī)頂盒混合信號(hào)前端（MxFE?）

AD9877是一款單電源電纜調(diào)制解調(diào)器/機(jī)頂盒混合信號(hào)前端，內(nèi)置發(fā)射路徑插值濾波器、完整正交數(shù)字上變頻器和發(fā)射DAC。接收路徑內(nèi)置12位ADC和雙通道8位ADC。內(nèi)部需要的所有時(shí)鐘和輸出系統(tǒng)時(shí)鐘均由PLL從單晶體或時(shí)鐘輸入產(chǎn)生。\n\n 發(fā)射路徑插值濾波器提供12或16倍的升采樣系數(shù)，輸出信號(hào)帶寬高達(dá)8.4 MHz。直接數(shù)字頻率合成器（DDS）可以產(chǎn)生最高65 MHz的載波頻率，頻率調(diào)諧分辨率為26位。發(fā)射DAC的分辨率為12位，能以高達(dá)232 MSPS的采樣速率工作。模擬輸出可以在0 dB至7.5 dB范圍內(nèi)調(diào)整，步進(jìn)為0.5 dB，以便在輸出電平需要降低時(shí)保持發(fā)射路徑信噪比（SN ? 低成本3.3 V CMOS MxFE?，用于MCNS-DOCSIS、DVB、DAVIC兼容機(jī)頂盒和電纜調(diào)制解調(diào)器應(yīng)用\n\n? 232 MHz正交數(shù)字上變頻器\n\n? 12位直接中頻DAC (TxDAC+?)\n\n? 最高65 MHz載波頻率DDS\n\n? 可編程采樣時(shí)鐘速率\n\n? 可選插值濾波器;

ADI

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Mixed-Signal Front End Set-Top Box, Cable Modem

GENERAL DESCRIPTION The AD9877 is a single-supply set-top box and cable modem mixed-signal front end. The device contains a transmit path interpolation filter, complete quadrature digital upconverter, and transmit DAC. The receive path contains a 12-bit ADC and dual 8-bit ADCs. All internally req

文件：1.09425 Mbytes 頁(yè)數(shù)：36 Pages

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亞德諾

Mixed-Signal Front End Set-Top Box, Cable Modem

GENERAL DESCRIPTION The AD9877 is a single-supply set-top box and cable modem mixed-signal front end. The device contains a transmit path interpolation filter, complete quadrature digital upconverter, and transmit DAC. The receive path contains a 12-bit ADC and dual 8-bit ADCs. All internally req

文件：1.09425 Mbytes 頁(yè)數(shù)：36 Pages

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Mixed-Signal Front End Set-Top Box, Cable Modem

文件：1.10081 Mbytes 頁(yè)數(shù)：36 Pages

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Set-Top Box, Cable Modem

文件：491.29 Kbytes 頁(yè)數(shù)：37 Pages

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亞德諾

Set-Top Box, Cable Modem

文件：491.29 Kbytes 頁(yè)數(shù)：37 Pages

AD

亞德諾

Set-Top Box, Cable Modem

文件：491.29 Kbytes 頁(yè)數(shù)：37 Pages

AD

亞德諾