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AD9779A

Dual, 12-/14-/16-Bit,1 GSPS Digital-to-Analog Converters

GENERALDESCRIPTION TheAD9776A/AD9778A/AD9779Aaredual,12-/14-/16-bit,highdynamicrangedigital-to-analogconverters(DACs)thatprovideasamplerateof1GSPS,permittingamulticarriergenerationuptotheNyquistfrequency.Theyincludefeaturesoptimizedfordirectconversiontransmissi

AD9779A

雙通道、16-Bit、1 GSPS、數(shù)模轉(zhuǎn)換器; ? 低功耗：全部工作條件下：1.0 W (1 GSPS)，600 mW (500 MSPS)\n\n? 單載波W-CDMA ACLR = 80 dBc (80 MHz 中頻)\n\n? 可調(diào)模擬輸出：8.7 mA至31.7 mA，RL = 25 Ω至50 Ω\n\n? 新穎的2×、4×、8×插值器/粗調(diào)復(fù)數(shù)調(diào)制器可以將載波放在DAC帶寬中的任何位置\n\n? 輔助DAC可以控制外部VGA及失調(diào)\n\n? 多芯片同步接口\n\n? 高性能、低噪聲鎖相環(huán)(PLL)時(shí)鐘倍頻器\n\n? 數(shù)字反sinc濾波器\n\n? 100引腳、裸露焊盤(pán)TQFP封裝;

AD9776A/AD9778A/AD9779A是雙通道、12-/14-/16-bit、寬動(dòng)態(tài)范圍數(shù)模轉(zhuǎn)換器(DAC)，提供1 GSPS采樣速率，允許高至奈奎斯特頻率的多載波生成。這些數(shù)模轉(zhuǎn)換器已經(jīng)為直接轉(zhuǎn)換傳輸應(yīng)用進(jìn)行最優(yōu)化，包括法和(delete)數(shù)字復(fù)調(diào)制、增益與偏移補(bǔ)償。數(shù)模轉(zhuǎn)換器輸出已進(jìn)行優(yōu)化，可以同ADI公司的ADL537x FMOD系列等模擬正交調(diào)制器進(jìn)行無(wú)縫接口。串行外設(shè)接口(SPI)為許多內(nèi)部參數(shù)提供可編程/回讀。滿幅輸出電流可以在10 mA～30 mA范圍進(jìn)行設(shè)置。這些模數(shù)轉(zhuǎn)換器是利用先進(jìn)的0.18μm CMOS工藝制作的，工作電壓范圍為1.8 V～3.3 V，全部功耗為1.0 W。它們采用100引腳薄型扁平四面封裝(TQFP) \n\n 產(chǎn)品特點(diǎn)\n\n 超低噪聲與互調(diào)失真(IMD)，實(shí)現(xiàn)從基帶到高中頻的寬帶信號(hào)高質(zhì)量合成 擁有自主知識(shí)產(chǎn)權(quán)的數(shù)字模數(shù)轉(zhuǎn)換器輸出轉(zhuǎn)換技術(shù)提供了動(dòng)態(tài)性能 可以容易地為各種單端或差分電流拓?fù)浣Y(jié)構(gòu)提供電流輸出配置 CMOS數(shù)據(jù)輸入接口，具有可調(diào)設(shè)置與保持 新穎的2×, 4×, 與8×分類機(jī)/粗調(diào)綜合調(diào)節(jié)器，允許在數(shù)模轉(zhuǎn)換器的任意帶寬進(jìn)行載波布局

AD9779A

Digital-to-Analog Converters

AD9779A

Interfacing the ADL5370 I/Q Modulator to the AD9779A Dual-Channel, 1 GSPS High Speed DAC

AD9779A

Interfacing the ADL5371 I/Q Modulator to the AD9779A Dual-Channel, 1 GSPS High Speed DAC

AD9779A

Interfacing the ADL5372 I/Q Modulator to the AD9779A Dual-Channel, 1 GSPS High Speed DAC

AD9779A

Interfacing the ADL5373 I/Q Modulator to the AD9779A Dual-Channel, 1 GSPS High Speed DAC

AD9779A

Interfacing the ADL5374 I/Q Modulator to the AD9779A Dual-Channel, 1 GSPS High Speed DAC

AD9779A

Interfacing the ADL5375 I/Q Modulator to the AD9779A Dual-Channel, 1 GSPS High Speed DAC

AD9779ABSVZ

Dual, 12-/14-/16-Bit,1 GSPS

GENERALDESCRIPTION TheAD9776A/AD9778A/AD9779Aaredual,12-/14-/16-bit,highdynamicrangedigital-to-analogconverters(DACs)thatprovideasamplerateof1GSPS,permittingamulticarriergenerationuptotheNyquistfrequency.Theyincludefeaturesoptimizedfordirectconversiontransmissi