ADI ADL5385是一款硅單芯片正交調(diào)制器,設(shè)計(jì)用于30 MHz至2200 MHz頻率范圍。其出色的相位精度和幅度平衡可以為通信系統(tǒng)提供高性能中頻(IF)和直接射頻(RF)調(diào)制。
ADL5385從兩路差分基帶輸入獲得信號,并將其調(diào)制到兩個(gè)彼此正交的載波上。兩個(gè)內(nèi)部載波均源自一路單端、外部本機(jī)振蕩器輸入信號,其頻率為目標(biāo)載波輸出頻率的兩倍。經(jīng)過調(diào)制的兩路信號,在一個(gè)可驅(qū)動(dòng)50 Ω負(fù)載的差分轉(zhuǎn)單端放大器上相加。
ADL5385可以用作數(shù)字通信系統(tǒng)中的中頻調(diào)制器或直接至RF調(diào)制器。較寬的基帶輸入帶寬為基帶驅(qū)動(dòng)以及從復(fù)合中頻驅(qū)動(dòng)提供了條件。典型應(yīng)用包括無線電鏈路發(fā)射機(jī)、電纜調(diào)制解調(diào)器終端系統(tǒng)和寬帶無線接入系統(tǒng)。
ADL5385采用ADI公司先進(jìn)的硅-鍺雙極性工藝制造,提供24引腳、裸露焊盤無鉛LFCSP_VQ封裝。額定溫度范圍為-40℃至+85°C,同時(shí)提供無鉛評估板。
應(yīng)用
無線電鏈路基礎(chǔ)設(shè)施
電纜調(diào)制解調(diào)器終端系統(tǒng)
UHF/VHF無線電
無線基礎(chǔ)設(shè)施系統(tǒng)
無線本地環(huán)路
WiMAX/寬帶無線接入系統(tǒng)
特點(diǎn)和優(yōu)勢
輸出頻率范圍:30 MHz至2,200 MHz
1 dB輸出壓縮:11 dBm (350 MHz)
本底噪聲:–159 dBm/Hz (350 MHz)
邊帶抑制:−50 dBc (350 MHz)
載波饋漏:−46 dBm (350 MHz)
單電源:4.75 V至5.5 V
24引腳、裸露焊盤、無鉛LFCSP_VQ封裝
ADL5385功能框圖
FEATURES
Output frequency range: 30MHz to 2200 MHz
1 dB output compression: 11 dBm @ 350 MHz
Noise floor: –159dBm/Hz@ 350 MHz
Sideband suppression: −50 dBc @ 350 MHz
Carrier feedthrough: −46 dBm@ 350 MHz
Single supply: 4.75 V to 5.5 V
24-lead, Pb-free LFCSP_VQwith exposed paddle
**注意 & Noted:
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